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Xiao W, Zhang Q, You DH, Li NB, Zhou GM, Luo HQ. Construction of a novel flavonol fluorescent probe for copper (II) ion detection and its application in actual samples. Spectrochim Acta A Mol Biomol Spectrosc 2024; 314:124175. [PMID: 38565051 DOI: 10.1016/j.saa.2024.124175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 03/12/2024] [Accepted: 03/17/2024] [Indexed: 04/04/2024]
Abstract
Copper is an essential trace element in the human body, and its level is directly related to many diseases. While the source of copper in human body is mainly intake from food, then the detection of copper ions (Cu2+) in food becomes crucial. Here, we synthesized a novel probe (E)-3-hydroxy-2-styryl-4H-benzo[h]chromen-4-one (NSHF) and explored the binding ability of NSHF for Cu2+ using nuclear magnetic resonance hydrogen spectroscopy (1H NMR), high-resolution mass spectrometry (HRMS), Job's plot method and density functional theory (DFT). NSHF shows the advantages of fast response time, good selectivity and high sensitivity for Cu2+. The fluorescence intensity ratio (F/F0) of NSHF shows a good linear relationship with the concentration of Cu2+ and the detection limit is 0.061 μM. NSHF was successfully applied to the detection of Cu2+ in real samples. In addition, a simple and convenient Cu2+ detection platform was constructed by combining NSHF with a smartphone and a UV lamp, which can realize the rapid detection of Cu2+. This work provides an effective tool for the real-time detection of Cu2+.
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Affiliation(s)
- Wei Xiao
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Qing Zhang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Dong Hui You
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Nian Bing Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Guang Ming Zhou
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Hong Qun Luo
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
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Xu ZY, Wang R, Xiao Q, Luo HQ, Li NB. Taming Janus-Faced Quinoline-Derived Fluorescent Probes for Dual-Channel Distinguishable Visualization of HSO 3- and HClO in Dried Foods and Living Cells. J Agric Food Chem 2024; 72:10097-10105. [PMID: 38630689 DOI: 10.1021/acs.jafc.4c00375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
With the booming development of food manufacturing, developing ideal analytical tools to precisely quantify food additives is highly sought after in the food science field. Herein, a new series of quinoline-derived multifunctional fluorescent probes has been synthesized. Bearing double reactive sites, these compounds display fluorescence response toward both bisulfite (HSO3-) and hypochlorous acid (HClO). Among these compact structures, compound ethyl-2-cyano-3-(6-(methylthio)quinolin-2-yl)acrylate (QTE) was screened out. Probe QTE not only shows ratiometric variation toward HSO3- with little cross talk but also performs turn-off signal toward HClO. In addition, probe QTE has been utilized for bioimaging of HClO in living cells. Furthermore, the HSO3- content in dried food samples has been appraised by QTE with satisfactory results. Meanwhile, relying on the apparent chromaticity change, a flexible dark-box device has been elaborated for chromatic analysis, promoting visualization of HSO3- in the field.
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Affiliation(s)
- Zi Yi Xu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Rong Wang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Qi Xiao
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
- School of Chemistry and Materials, Nanning Normal University, Nanning 530001, PR China
| | - Hong Qun Luo
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Nian Bing Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
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Tan HY, Sun Z, Deng CC, Wang BJ, Dong XZ, Luo HQ, Li NB. A dual-mode sensing platform coupling two-signal ratiometric and colorimetric methods for detecting Au 3+ based on surface state-regulated carbon nanodot. Spectrochim Acta A Mol Biomol Spectrosc 2024; 311:123993. [PMID: 38340447 DOI: 10.1016/j.saa.2024.123993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 01/14/2024] [Accepted: 01/31/2024] [Indexed: 02/12/2024]
Abstract
The considerable risk posed by Au3+ residues to the environment and human health has sparked interest in researching Au3+ monitoring techniques. The detection results in the usual ratio mode are more reliable. In this work, we develop a dual-mode strategy based on reducing carbon dots coupling with two-signal ratiometric and colorimetric methods for high-sensitivity, good-selectivity, and wide-range detection of Au3+. Cyan carbon dots (C-CDs) were synthesized by a simple and efficient one-step hydrothermal method. The C-CDs with rich amino group used m-phenylenediamine as carbon source, which made it have the potential as a reducing agent. After the addition of Au3+, Au3+ was reduced to Au0, generating stable gold nanoparticles (AuNPs). The fluorescence signal (F490) of C-CDs decreased. At the same time, the large size of AuNPs enhances the second-order scattering signal (S770) and produces the UV-visible absorption peak of AuNPs. Therefore, the dual-mode sensing strategy combining S770/F490 ratiometric and colorimetric detection of Au3+ is realized with high accuracy and sensitivity. Au3+ was determined in real samples and a good recovery was obtained. The dual-mode method has good performance and practicality, so it shows great potential for environment testing in a simple and reliable way.
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Affiliation(s)
- Hong Yu Tan
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Zhe Sun
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Cui Cui Deng
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Bin Jie Wang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Xue Zhen Dong
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Hong Qun Luo
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
| | - Nian Bing Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
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Wang R, Xu ZY, Li T, Li NB, Luo HQ. Mediating sequential turn-on and turn-off fluorescence signals for discriminative detection of Ag + and Hg 2+ via readily available CdSe quantum dots. Spectrochim Acta A Mol Biomol Spectrosc 2024; 315:124288. [PMID: 38636427 DOI: 10.1016/j.saa.2024.124288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 04/07/2024] [Accepted: 04/11/2024] [Indexed: 04/20/2024]
Abstract
Realizing the accurate recognition and quantification of heavy metal ions is pivotal but challenging in the environmental, biological, and physiological science fields. In this work, orange fluorescence emitting quantum dots (OQDs) have been facilely synthesized by one-step method. The participation of silver ion (Ag+) can evoke the unique aggregation-induced emission (AIE) of OQDs, resulting in prominent fluorescence enhancement, which is scarcely reported previously. Moreover, the Ag+-triggered turn-on fluorescence can be continuously shut down by mercury ion (Hg2+). This intriguing sequential fluorescence variation exhibits great sensing potency for discrimination and quantification of Ag+ and Hg2+. Meanwhile, our OQDs also exhibit good selectivity, sensitivity, and rapid response toward Ag+ and Hg2+ detection. Due to their high performance, OQDs have been applied to the determination of Ag+ and Hg2+ levels in daily necessities and water samples with satisfactory results. Moreover, a portable smartphone-assisted sensing platform based on chromatic change has been constructed, facilitating the real-time and naked-eye visualization in the resource-confined scene. We anticipate that the discovery of these OQDs would be advantageous for exploring novel QDs materials for fluorescence detection.
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Affiliation(s)
- Rong Wang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Zi Yi Xu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Ting Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Nian Bing Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
| | - Hong Qun Luo
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
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Xiao W, Zhang Q, You DH, Xue W, Peng F, Li NB, Zhou GM, Luo HQ. Myricetin-based fluorescence probes with AIE and ESIPT properties for detection of hydrazine in the environment and fingerprinting. Anal Chim Acta 2024; 1288:342173. [PMID: 38220304 DOI: 10.1016/j.aca.2023.342173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 11/13/2023] [Accepted: 12/20/2023] [Indexed: 01/16/2024]
Abstract
BACKGROUND Hydrazine (N2H4) is a highly toxic and versatile chemical raw material, which poses a serious threat to the environment and human health when used in large quantities. However, the traditional methods for the detection of N2H4 have the disadvantages of time-consuming, complicated operation and expensive instruments. In contrast, fluorescence probes have many advantages, such as simple operation, high sensitivity, good selectivity, and fast response time. Therefore, there is an urgent need for a fluorescence probe that can rapidly and accurately detect the presence of N2H4 and monitor the changes in its concentration. RESULTS For this purpose, we designed and synthesized a series of myricetin fluorescence probes 3-(substituent group)-5,7-dimethoxy-4-oxo-2-(3,4,5-trimethoxy. phenyl)-4H-chromen-4-one (Myr-R) for N2H4 detection. In the presence of N2H4, the probe 5,7-dimethoxy-3-(2,3,4,5,6-pentafluorobenzoate)-2-(3,4,5-trimethoxyphen-yl). -4H-chr-omen-4-one (Myr-3) shows significant fluorescence changes, double emission properties and a large Stokes shift (183 nm), and exhibits high selectivity and sensitivity to N2H4 (The detection limit is 93 nM). Importantly, the qualitative and quantitative analysis of N2H4 in water, soil, and air can be accomplished using fluorescence, smartphone, and UV lamps coupled with Myr-3. In addition, Myr-3 can be used for monitoring and imaging intracellular N2H4. Meanwhile, the fluorophore 3-hydroxy-5,7-dimethoxy-2-(3,4,5-trimethoxyphenyl)-4H-benzopyran-4-one (Myr-Me) was applied to fingerprinting of different substrate materials due to the fact that it exhibits strong yellow fluorescence emission in the solid state and shows excellent contrast and high resolution. SIGNIFICANCE The probe Myr-3 is not only able to rapidly detect N2H4 in complex environments, but also can be used for imaging intracellular N2H4. In addition, the fluorophore Myr-Me can be used as an effective imaging agent for visual fingerprinting. These properties enable the probe Myr-3 and the fluorophore Myr-Me for a wide range of potential applications in related fields.
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Affiliation(s)
- Wei Xiao
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Qing Zhang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Dong Hui You
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Wei Xue
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang, 550025, PR China
| | - Feng Peng
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang, 550025, PR China
| | - Nian Bing Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Guang Ming Zhou
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China.
| | - Hong Qun Luo
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China.
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Zhu LR, Wang ZY, Luo JJ, Zheng YJ, Zou HL, Luo HQ, Zhao LB, Li NB, Li BL. Mercury-Mediated Epitaxial Accumulation of Au Atoms for Stained Hydrogel-Improved On-Site Mercury Monitoring. Anal Chem 2023; 95:18859-18870. [PMID: 38096265 DOI: 10.1021/acs.analchem.3c04338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2023]
Abstract
Trivalent Au ions are easily reduced to be zerovalent atoms by coexisting reductant reagents, resulting in the subsequent accumulation of Au atoms and formation of plasmonic nanostructures. In the absence of stabilizers or presence of weak stabilizers, aggregative growth of Au nanoparticles (NPs) always occurs, and unregular multidimensional Au materials are consequently constructed. Herein, the addition of nanomole-level mercury ions can efficiently prevent the epitaxial accumulation of Au atoms, and separated Au NPs with mediated morphologies and superior plasmonic characteristics are obtained. Experimental results and theoretical simulation demonstrate the Hg-concentration-reliant formation of plasmonic nanostructures with their mediated sizes and shapes in the presence of weak reductants. Moreover, the sensitive plasmonic responses of reaction systems exhibit selectivity comparable to that of Hg species. As a concept of proof, polymeric carbon dots (CDs) were used as the initial reductant, and the reactions between trivalent Au and CDs were studies. Significantly, Hg atoms prevent the epitaxial accumulation of Au atoms, and plasmonic NPs with decreased sizes were in situ synthesized, corresponding to varied surface plasmonic resonance absorption performance of the CD-induced hybrids. Moreover, with the integration of sensing substrates of CD-doped hydrogels, superior response stabilities, analysis selectivity, and sensitivity of Hg2+ ions were achieved on the basis of the mercury-mediated in situ chemical reactions between trivalent Au ions and reductant CDs. Consequently, a high-performance sensing strategy with the use of Au NP-staining hydrogels (nanostaining hydrogels) was exhibited. In addition to Hg sensing, the nanostaining hydrogels facilitated by doping of emerging materials and advanced chem/biostrategies can be developed as high-performance on-site monitoring routes to various pollutant species.
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Affiliation(s)
- Liang Rui Zhu
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Zhao-Yu Wang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Jun Jiang Luo
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Ying Jie Zheng
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Hao Lin Zou
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Hong Qun Luo
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Liu-Bin Zhao
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Nian Bing Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Bang Lin Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
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7
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Luo YH, Fu HC, Chen XH, Wang BJ, Yang B, Li NB, Luo HQ. Modulating adsorption energy on nickel nitride-supported ruthenium nanoparticles through in-situ electrochemical activation for urea-assisted alkaline hydrogen production. J Colloid Interface Sci 2023; 652:1665-1672. [PMID: 37666198 DOI: 10.1016/j.jcis.2023.08.154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 08/12/2023] [Accepted: 08/24/2023] [Indexed: 09/06/2023]
Abstract
The rational design of electrocatalysts with exceptional performance and durability for hydrogen production in alkaline medium is a formidable challenge. In this study, we have developed in-situ activated ruthenium nanoparticles dispersed on Ni3N nanosheets, forming a bifunctional electrocatalyst for hydrogen evolution and urea oxidation. The results of experimental analysis and theoretical calculations reveal that the enhanced hydrogen evolution reaction (HER) performance of O-Ru-Ni3N stems primarily from the optimized hydrogen adsorption and hydroxyl adsorption on Ru sites. The O-Ru-Ni3N on nickel foam (NF) electrode exhibits excellent HER performance, requiring only 29 mV to reach 10 mA cm-2 in an alkaline medium. Notably, when this O-Ru-Ni3N/NF catalyst is employed for both HER and urea oxidation reaction (UOR) to create an integrated H2 production system, a current density of 50 mA cm-2 can be generated at the cell voltage of 1.41 V. This report introduces an energy-efficient catalyst for hydrogen production and proposes a viable strategy for anodic activation in energy chemistry.
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Affiliation(s)
- Yuan Hao Luo
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Hong Chuan Fu
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Xiao Hui Chen
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Bing Jie Wang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Bo Yang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Nian Bing Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Hong Qun Luo
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
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Chen XH, Ren JY, Li NB, Luo HQ. Constructing of CoP-Nb 2O 5 p-n heterojunction with built-in electric field to accelerate the charge migration in electrocatalytic hydrogen evolution. J Colloid Interface Sci 2023; 651:760-768. [PMID: 37572613 DOI: 10.1016/j.jcis.2023.08.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 07/25/2023] [Accepted: 08/05/2023] [Indexed: 08/14/2023]
Abstract
Studying interfacial charge transfer is of great significance for the preparation of electrocatalysts with high activity for the hydrogen evolution reaction (HER). Particularly, exploring the in-depth catalytic mechanisms and facile fabrication methods of narrow bandgap metal phosphides remains worthwhile. This work successfully combined catalytically inert n-type Nb2O5 with p-type CoP to prepare a p-n heterojunction (CoP-Nb2O5). The self-supporting heterojunction was fabricated by gas-phase phosphorization of the Co(OH)2-Nb2O5 precursor obtained through hydrothermal-electrodeposition strategy. By analyzing the electronic and band structures of CoP and Nb2O5, it was found that there exists a built-in electric field (BEF) in the heterojunction. This BEF can modulate the electronic structure of CoP at the interface, enhance its intrinsic activity and accelerate charge migration. The subsequent experimental results also demonstrate that Nb2O5 can significantly enhance the activity and stability of CoP. Our findings can serve as a novel perspective on the application of p-n heterojunction in the field of energy storage and conversion.
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Affiliation(s)
- Xiao Hui Chen
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Jun Yao Ren
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Nian Bing Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Hong Qun Luo
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
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Sun Z, Fan YZ, Zhang YD, Li BL, Dong XZ, Xiao Q, Li NB, Luo HQ. An intelligent "chemical tongue" for high-order monitoring ATP-related physiological phosphates and ATP hydrolysis through diverse transduction principles. Biosens Bioelectron 2023; 241:115691. [PMID: 37738803 DOI: 10.1016/j.bios.2023.115691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/28/2023] [Accepted: 09/12/2023] [Indexed: 09/24/2023]
Abstract
For discriminating diverse analytes and monitoring a specific chemical reaction, the emerging multi-channel "chemical nose/tongue" is challenging multi-material "chemical nose/tongue". The former contributes greatly to integrating different transduction principles from a single sensing material, avoiding the need for complex design, high cost, and tedious operation involved with the latter. Therefore, this high-order sensing puts a particular emphasis on the effects of encapsulation. Herein, the plasmonic gold nanoparticles (Au NPs) are encapsulated as a core into the fluorescent guanine monophosphate-Tb3+ infinite coordination polymer nanoparticles (GMP-Tb ICPs) to obtain a core-shell nanocomposite named Au NPs@GMP-Tb ICPs. Hence, a dual-channel "chemical tongue" based on Au NPs@GMP-Tb ICPs is present to realize high-order sensing of adenosine triphosphate (ATP)-related physiological phosphates and the monitoring of ATP hydrolysis. Considering the affinity of Tb3+ towards P-O bonds, four inorganic phosphates and three nucleotide phosphates with different phosphate group numbers and steric hindrance effect directly regulate two stimulus responses (fluorescence intensity and UV-vis absorbance) of Au NPs@GMP-Tb ICPs. Robust statistical methods, such as linear discriminant analysis and hierarchical cluster analysis, are used to recognize each phosphate by the developed sensor array either in the aqueous solution or in complex media such as serum, together with efficiently monitored ATP hydrolysis at different intervals. These findings and blind test clarify that the designed "chemical tongue" guarantees interference resistance and strengthens analytical capacity, together with offering valuable insight into "lab-on-a-nanoparticle" development for monitoring specific chemical reactions.
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Affiliation(s)
- Zhe Sun
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Yu Zhu Fan
- College of Chemistry & Chemical Engineering, Chongqing University of Science & Technology, Chongqing, 401331, PR China
| | - Yi Dan Zhang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Bang Lin Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Xue Zhen Dong
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Qi Xiao
- School of Chemistry and Materials, Nanning Normal University, Nanning, 530001, PR China.
| | - Nian Bing Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China.
| | - Hong Qun Luo
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China.
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10
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Xu ZY, He XD, Luo HQ, Xu LQ, Li NB. Tailoring Efficient Fluorogenic Tactic for Ultrasensitive Detection of Dopamine in Urine and Rat Brain through Real-Time and In Situ Formation of High-Performance Fluorophore. Anal Chem 2023; 95:15965-15974. [PMID: 37851944 DOI: 10.1021/acs.analchem.3c03035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2023]
Abstract
Owing to the predominance of dopamine (DA) in controlling mental health, planning an innovative method for DA detection with simplicity and high efficacy is conducive to the assessment of neurological disorders. Herein, an efficient fluorogenic tactic has been elaborated for ultrasensitive detection of DA with remarkably enhanced turn-on response. Utilizing a twisted intramolecular charge-transfer (TICT)-suppressing strategy, a highly emissive azocine derivative 11-hydroxy-2,3,6,7,11,12,13,14-octahydro-1H,5H,10H-11,14a-methanoazocino[5',4':4,5]furo[2,3-f]pyrido[3,2,1-ij]quinolin-10-one (J-Aza) is generated via a one-step reaction between DA and 8-hydroxyjulolidine. It is marvelous that J-Aza not only possesses ideal fluorescence quantum yield (ΦF) as high as 0.956 but also exhibits bathochromic shifted fluorescence (green emissive) and stronger anti-photobleaching capacity superior to traditional azocine-derived 1,2,3,4-tetrahydro-5H-4,11a-methanobenzofuro[2,3-d]azocin-5-one (Aza) with moderate ΦF, blue fluorescence, and poor photostability. By confining the TICT process, the detection limit to DA can be reduced to 80 pM, which is competitive in contrast to previously reported fluorescence methods. Encouraged by the instant response (within 90 s), wide linear range (0.1-500 nM), great selectivity, and excellent sensitivity, this fluorogenic method has been used for the real-time measurement of DA contents in practical urine samples with satisfactory results. Furthermore, the cerebral DA level in the reserpine-induced depression rat model has also been evaluated by our designed method, demonstrating its potent analytical applicability in the biosensing field.
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Affiliation(s)
- Zi Yi Xu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Xiao Dong He
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, School of Materials and Energy, Southwest University, Chongqing 400715, P. R. China
| | - Hong Qun Luo
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Li Qun Xu
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, School of Materials and Energy, Southwest University, Chongqing 400715, P. R. China
| | - Nian Bing Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
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11
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Wang BJ, Xu ZY, Sun Z, Li ZQ, Luo YH, Luo HQ, Li NB. A wide-range ratiometric sensor mediating fluorescence and scattering based on carbon dots/metal-organic framework composites for the detection of bisulfite/sulfite in sugar. Anal Bioanal Chem 2023:10.1007/s00216-023-04763-y. [PMID: 37268746 DOI: 10.1007/s00216-023-04763-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 04/30/2023] [Accepted: 05/03/2023] [Indexed: 06/04/2023]
Abstract
Bisulfite (HSO3-) and sulfite (SO32-) are commonly employed in food preservatives and are also significant environmental pollutants. Thus, developing an effective method for detecting HSO3-/SO32- is crucial for food safety and environment monitoring. In this work, based on carbon dots (CDs) and zeolitic imidazolate framework-90 (ZIF-90), a composite probe (named CDs@ZIF-90) is constructed. The fluorescence signal and the second-order scattering signal of CDs@ZIF-90 are employed to ratiometricly detect HSO3-/SO32-. This proposed strategy exhibits a broad linear range for HSO3-/SO32- determination (10 µM to 8.5 mM) with a limit of detection of 2.74 μM. This strategy is successfully applied for evaluating HSO3-/SO32- in sugar with satisfactory recoveries. Therefore, this work has uniquely combined the fluorescence and second-order scattering signals to establish a novel sensing system with a wide linear range, which is applicable for ratiometric sensing of HSO3-/SO32- in actual samples.
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Affiliation(s)
- Bing Jie Wang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road, BeiBei District, Chongqing, 400715, People's Republic of China
| | - Zi Yi Xu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road, BeiBei District, Chongqing, 400715, People's Republic of China
| | - Zhe Sun
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road, BeiBei District, Chongqing, 400715, People's Republic of China
| | - Zi Qing Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road, BeiBei District, Chongqing, 400715, People's Republic of China
| | - Yuan Hao Luo
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road, BeiBei District, Chongqing, 400715, People's Republic of China
| | - Hong Qun Luo
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road, BeiBei District, Chongqing, 400715, People's Republic of China.
| | - Nian Bing Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road, BeiBei District, Chongqing, 400715, People's Republic of China.
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12
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Xu ZY, Meng L, Luo HQ, Xiao Q, Li NB. Screening of aggregation-induced emission and multi-response acrylonitrile-bridging fluorescent molecules tailored for rapid turn-on detection of HClO as well as ratiometric visualizing of extreme basicity. Anal Chim Acta 2023; 1254:341122. [PMID: 37005029 DOI: 10.1016/j.aca.2023.341122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 02/25/2023] [Accepted: 03/18/2023] [Indexed: 04/04/2023]
Abstract
Realizing the rapid and sensitive tracing of multiple analysis indicators using single molecular probe through structural designing is urgently desired for exploring novel multi-response chemosensors. Herein, a series of acrylonitrile-bridging organic small molecules have been rationally designed. Among these donor-π-acceptor (D-π-A) compounds with efficient aggregation-induced emission (AIE) characteristics, a unique derivative, 2-(1H-benzo[d]imidazole-2-yl)-3-(4-(methylthio)phenyl) acrylonitrile, named MZS, has been screened out for multifunctional utilizing. First, probe MZS can respond to hypochlorous acid (HClO) through specific oxidation reaction, showing a marked fluorescence turn-on signal (I495). This special sensing reaction is ultra-fast with a rather low detection limit (LOD = 13.6 nM). Next, versatile MZS is also sensitive to the extreme pH fluctuation, displaying an intriguing ratiometric signal variation (I540/I450), facilitating the real-time and naked-eye visualizing, which is even stable and reversible. Furthermore, probe MZS has been used for the monitoring of HClO in real water and commercially available disinfectant spray samples with satisfactory results. We envision that probe MZS would be a flexible and powerful tool for monitoring of environmental toxicity and industrial operations under realistic scenarios.
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Affiliation(s)
- Zi Yi Xu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Li Meng
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Hong Qun Luo
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Qi Xiao
- School of Chemistry and Materials, Nanning Normal University, Nanning, 530001, PR China.
| | - Nian Bing Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China.
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13
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Xu ZY, Wang XH, Luo HQ, Li NB. Cascade reaction-based highly sensitive fluorescent sensing systems applicable for dual-pattern fluorescence visualizing of thiophenol flavors in meat products and condiments. Food Chem 2023; 407:135120. [PMID: 36495742 DOI: 10.1016/j.foodchem.2022.135120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 10/29/2022] [Accepted: 11/27/2022] [Indexed: 12/12/2022]
Abstract
Thiophenols (ArSHs) are widely used as popular flavoring ingredients for making daily dishes. Dissecting the ArSHs contents in common foodstuffs is meaningful in the field of food safety science. Herein, a novel small-molecule sensor 2-(1H-benzo[d]imidazol-2-yl)-3-(2-(2,4-dinitrophenoxy)-4-morpholinophenyl)acrylonitrile (NOSA) has been tailored. The NOSA is able to respond to ArSHs, spontaneously yielding highly green-emissive fluorescent iminocoumarin (I500). This cascade reaction-based strategy is sensitive (limit-of-detection = 2.8 nM), rapid (within 5 min), and selective toward ArSH flavors. Probe NOSA has been applied to the determination of ArSHs in real-life meat products and condiments. Moreover, a far-red fluorescent compound, 2-(7-(diethylamino)-4-(4-(methylthio)styryl)-2H-chromen-2-ylidene)malononitrile (CMMT), has been first combined with NOSA to construct a composite probe NOSA@CMMT for the ratiometric detection of ArSHs (I500/I630). System NOSA@CMMT exhibits a conspicuous fluorescence change from deep-red to light-green. Benefitted from the gorgeous chromatic fluctuation, a smartphone-integrated analysis platform is established for the real-time evaluation of ArSHs level.
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Affiliation(s)
- Zi Yi Xu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Xiao Hu Wang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Hong Qun Luo
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
| | - Nian Bing Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
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14
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Cui YB, Yan H, Sun Z, Ling Y, Luo HQ, Li NB. A photoelectrochemical biosensor based on ZnIn2S4@AuNPs coupled with circular bipedal DNA walker for signal-on detection of circulating tumor DNA. Biosens Bioelectron 2023; 231:115295. [PMID: 37058959 DOI: 10.1016/j.bios.2023.115295] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 03/22/2023] [Accepted: 03/31/2023] [Indexed: 04/08/2023]
Abstract
The circulating tumor DNA (ctDNA) is a crucial cancer marker, its sensitive monitoring is useful for early diagnose and therapy of tumor-related diseases. Herein, a bipedal DNA walker with multiple recognition sites is designed through the transition of dumbbell-shaped DNA nanostructure to realize the dual amplification of the signal and achieve ultrasensitive photoelectrochemical (PEC) detection of ctDNA. Initially, the ZnIn2S4@AuNPs is obtained by combining the drop coating method with electrodeposition method. When the target is present, the dumbbell-shaped DNA structure transforms into an annular bipedal DNA walker that can walk unrestrictedly on the modified electrode. After the cleavage endonuclease (Nb.BbvCI) was added to the sensing system, the ferrocene (Fc) on the substrate is released from the electrode surface, and the transfer efficiency of photogenerated electron-hole pairs is extremely improved, enabling the "signal on" testing of ctDNA. The detection limit of the prepared PEC sensor is 0.31 fM, and the recovery of actual samples varied between 96.8 and 103.6% with an average relative standard deviation of about 8%. Meaningfully, the prepared PEC biosensor with an innovative bipedal DNA walker has potential application value for ultrasensitive detection of other nucleic acid-related biomarker.
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15
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Yan H, Sun Z, Qing M, Ling Y, Liu WW, Li NB, Luo HQ. Kill two birds with one stone: Ratiometric sensing of phosphate via a single-component probe with fluorescence-scattering dual-signal response behavior. Anal Chim Acta 2023; 1246:340866. [PMID: 36764770 DOI: 10.1016/j.aca.2023.340866] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 01/18/2023] [Accepted: 01/19/2023] [Indexed: 01/21/2023]
Abstract
Ratiometric fluorescence sensors gain stronger anti-interference ability via self-calibration. Nevertheless, ratiometric analysis of phosphate (Pi) still faces problems such as complicated construction process of dual emission probes and possible interferences from outputting mono-category fluorescent signal. Herein, we propose a "kill two birds with one stone" strategy to address these challenges, by simply introducing a single-component probe, porphyrin paddlewheel framework-3 (PPF-3) nanosheets without modification, encapsulation or complex, to integrate fluorescence (FL)-second-order scattering (SOS) dual-signal for ratiometric detection of Pi. PPF-3 nanosheets are constructed by coordination of Co2+ with 5,10,15,20-tetrakis(4-carboxyl-phenyl)-porphyrin (TCPP) ligands, displaying weak FL and strong SOS, two different and independent signals. In the response system to Pi, Co2+ and TCPP serve as the recognition element and signal unit, respectively. After interacting with Pi, the high affinity for Co2+ makes Pi snatch Co2+ from the PPF-3 nanosheets, causing their structure disassembly (SOS decrease) and TCPP release (FL increase). Finally, the FL-SOS ratiometric platform is successfully employed to access Pi in real water samples. Synchronous collection of FL and SOS from the single-component probe provides a simpler and more efficient way on ratiometric sensor design as well as a new useful technique for monitoring target-induced aggregation and disaggregation behavior.
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Affiliation(s)
- Hang Yan
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Zhe Sun
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Min Qing
- College of Pharmacy, Chongqing Medical University, Chongqing, 400016, PR China
| | - Yu Ling
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Wei Wei Liu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Nian Bing Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China.
| | - Hong Qun Luo
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China.
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16
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Luo JJ, Zhang H, Zou HL, Luo HQ, Li NB, Li BL. Tracking the Growth of Chiral Plasmonic Nanocrystals at Molybdenum Disulfide Heterostructural Interfaces. Langmuir 2023; 39:3052-3061. [PMID: 36787386 DOI: 10.1021/acs.langmuir.2c03101] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The way of accurately regulating the growth of chiral plasmonics is of great importance for exploring the chirality information and improving its potential values. Herein, cysteine enantiomers modulate the anisotropic and epitaxial growth of gold nanoplasmonics on seeds of exfoliated MoS2 nanosheets. The heterostructural Au and MoS2 hybrids induced by enantiomeric cysteine are presented with chiroptical characteristics, dendritic morphologies, and plasmonic performances. Moreover, the synthesis, condition optimization, formation mechanism, and plasmonic properties of Au and MoS2 dendritic nanostructures are studied. The chirality characteristics are identified using the circular dichroism spectra and scanning electron microscopy. Time-resolved transmission electron microscopy and UV-vis spectra of the intermediate products captured are analyzed to confirm the formation mechanism of dendritic plasmonic nanostructures at heterostructural surfaces. The specific dendritic morphologies originate from the synergistic impacts of heterostructural MoS2 interfaces and enantiomeric cysteine-induced anisotropic manipulation. Significantly, the developed synthesis strategy of chiral nanostructures at heterostructural interfaces is highly promising in promoting the understanding of the plasmonic function and crucial chirality bioinformation.
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Affiliation(s)
- Jun Jiang Luo
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Hang Zhang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Hao Lin Zou
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Hong Qun Luo
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Nian Bing Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Bang Lin Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
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17
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Li T, Gu F, Chen XH, Zhang Q, Fu HC, Luo HQ, Li NB. Engineered Superhydrophilic/Superaerophobic Catalyst: Two-Dimensional Co(OH) 2-CeO 2 Nanosheets Supported on Three-Dimensional Co Dendrites for Overall Water Splitting. Inorg Chem 2023; 62:2784-2792. [PMID: 36705969 DOI: 10.1021/acs.inorgchem.2c03910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Efficient electrocatalysts require not only a tunable electronic structure but also great active site accessibility and favorable mass transfer. Here, a two-dimensional/three-dimensional (2D/3D) hierarchical electrocatalyst consisting of Co(OH)2-CeO2 nanosheet-decorated Co dendrites is proposed, named as Co(OH)2-CeO2/Co. Based on the strong electronic interaction of the Co(OH)2-CeO2 heterojunction, the electronic structure of the Co site is optimized, which facilitates the adsorption of intermediates and the dissociation of H2O. Moreover, the open 2D/3D structure formed by introducing the Co substrate further reduces the accumulation of heterogeneous nanosheets and promotes the radial diffusion of the electrolyte, significantly improving the utilization of active sites and shortening the electron transfer pathway. In addition, the superhydrophilic/superaerophobic interface achieved by constructing the hierarchical micro-nanostructure is beneficial to electrolyte infiltration and bubble desorption, thus ensuring favorable mass transfer. Therefore, Co(OH)2-CeO2/Co exhibits an excellent overall water-splitting activity in alkaline solution.
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Affiliation(s)
- Ting Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Fei Gu
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Xiao Hui Chen
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Qing Zhang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Hong Chuan Fu
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Hong Qun Luo
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Nian Bing Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
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18
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Li BL, Luo JJ, Zou HL, Zhang QM, Zhao LB, Qian H, Luo HQ, Leong DT, Li NB. Chiral nanocrystals grown from MoS 2 nanosheets enable photothermally modulated enantioselective release of antimicrobial drugs. Nat Commun 2022; 13:7289. [PMID: 36435865 PMCID: PMC9701227 DOI: 10.1038/s41467-022-35016-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 11/14/2022] [Indexed: 11/28/2022] Open
Abstract
The transfer of the concept of chirality from molecules to synthesized nanomaterials has attracted attention amongst multidisciplinary teams. Here we demonstrate heterogeneous nucleation and anisotropic accumulation of Au nanoparticles on multilayer MoS2 planes to form chiroptically functional nanomaterials. Thiol amino acids with chiral conformations modulate asymmetric growth of gold nanoarchitectures on seeds of highly faceted Au/MoS2 heterostructures. Consequently, dendritic plasmonic nanocrystals with partial chiral morphologies are synthesized. The chirality of dendritic nanocrystals inherited from cysteine molecules refers to the structural characteristics and includes specific recognition of enantiomeric molecules. With integration of the intrinsic photothermal properties and inherited enantioselective characteristics, dendritic Au/MoS2 heterostructures exhibit chirality-dependent release of antimicrobial drugs from hydrogel substrates when activated by exogenous infrared irradiation. A three-in-one strategy involving synthesis of chiral dendritic heterostructures, enantioselective recognition, and controlled drug release system is presented, which improves nanomaterial synthetic technology and enhances our understanding of crucial chirality information.
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Affiliation(s)
- Bang Lin Li
- grid.263906.80000 0001 0362 4044Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715 P. R. China
| | - Jun Jiang Luo
- grid.263906.80000 0001 0362 4044Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715 P. R. China
| | - Hao Lin Zou
- grid.263906.80000 0001 0362 4044Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715 P. R. China
| | - Qing-Meng Zhang
- grid.263906.80000 0001 0362 4044Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715 P. R. China
| | - Liu-Bin Zhao
- grid.263906.80000 0001 0362 4044Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715 P. R. China
| | - Hang Qian
- grid.410570.70000 0004 1760 6682Institute of Respiratory Diseases, Xinqiao Hospital, Third Military Medical University, 183 Xinqiao Street, Chongqing, 400037 P. R. China
| | - Hong Qun Luo
- grid.263906.80000 0001 0362 4044Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715 P. R. China
| | - David Tai Leong
- grid.4280.e0000 0001 2180 6431Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117585 Singapore
| | - Nian Bing Li
- grid.263906.80000 0001 0362 4044Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715 P. R. China
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19
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Li ZQ, Fu HC, Wang XH, Chen XH, Li T, Cui YB, Li NB, Luo HQ. Promoting photocatalytic organic pollutant degradation of BiOIO3/ basic bismuth (III) nitrate by dual field effect: Built-in electric field and piezoelectric field effect. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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20
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Cui Deng C, Yi Xu Z, Sun Z, Hao Xie J, Qun Luo H, Bing Li N. One-step synthesis of aldehyde-functionalized dual-emissive carbon dots for ratiometric fluorescence detection of bisulfite in food samples. Food Chem 2022; 405:134961. [DOI: 10.1016/j.foodchem.2022.134961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 11/07/2022] [Accepted: 11/12/2022] [Indexed: 11/18/2022]
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21
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Sun Z, Qing M, Fan YZ, Yan H, Li NB, Luo HQ. Quadruple analyte responsive platform: Point-of-care testing and multi-coding logic computation based on metal ions recognition and selective response. J Hazard Mater 2022; 437:129331. [PMID: 35709623 DOI: 10.1016/j.jhazmat.2022.129331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 06/04/2022] [Accepted: 06/06/2022] [Indexed: 06/15/2023]
Abstract
While it is recognized that instrumentation techniques can provide precise and sensitive solutions to heavy metal ion monitoring, it remains challenging to transform laboratory testing into a convenient, on-site, and quantitative sensing platform for point-of-care testing (POCT) in a resource-constrained setting. To address these limitations, an affordable and user-friendly colorimetric POCT sensing system is proposed here for selectively monitoring four metal ions (Fe3+, Co2+, Pb2+, and Cd2+) based on the sulfur quantum dots (S dots). Quadruple distinct visual signals (green, brown, precipitation, and bright yellow) are presented on the fabricated paper-based analytical devices (PADs) when mixing S dots and metal ions. The high-quality photographs of the PADs are captured by a scanner, while a smartphone App converts visual signals to HSV values. The quantitative analysis relies on the digital colorimetric reading, and the limits of detection are 0.59, 0.47, 0.82, and 0.53 μM for Fe3+, Co2+, Cd2+, and Pb2+, respectively. This metal ions-responsive platform is engineered as a smart strategy for multiple logic operations (YES, NOT, AND, INHIBIT, and NOR) by integrating multi-responsive blocks into the S dots with encoded patterns, which improves the computing capability. Accordingly, this strategy demonstrates its potential for on-site environmental testing and sophisticated molecular computation.
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Affiliation(s)
- Zhe Sun
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Min Qing
- College of Pharmacy, Chongqing Medical University, Chongqing 400016, China
| | - Yu Zhu Fan
- College of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| | - Hang Yan
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Nian Bing Li
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China.
| | - Hong Qun Luo
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China.
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22
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Yang YZ, Qiu WX, Xu ZY, Sun Z, Qing M, Li NB, Luo HQ. Rational design of a fluorescent probe for specific sensing of hydrogen peroxide/glucose and intracellular imaging applications. Spectrochim Acta A Mol Biomol Spectrosc 2022; 277:121254. [PMID: 35452901 DOI: 10.1016/j.saa.2022.121254] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 04/03/2022] [Accepted: 04/08/2022] [Indexed: 06/14/2023]
Abstract
A new type of dye with advantages of high selectivity and sensitivity is formed by using the strategy of hybridization between the luminescent unit and recognition unit. Based on this strategy, we exploit a novel dye bonding the benzopyrylium salt as a luminescent unit and phenylboronate group as a response site, which is served as a fluorescent probe 1 for specific recognition of hydrogen peroxide in biological application. Probe 1 employs a unique recognition switch, phenylboronate unit, to"turn-on"a highly specific and rapid fluorescence response toward hydrogen peroxide combined with the 1,6-rearrangement elimination reaction strategy. Meanwhile, probe 1 has the ability to glucose assay by taking advantage of glucose oxidase/glucose enzymatic reaction. What's more, the probe 1 is capable of tracking endogenous hydrogen peroxide in living cells and intracellular imaging. Therefore, the newly developed bioprobe 1 is expected to be used to monitor hydrogen peroxide and glucose levels in complex organisms.
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Affiliation(s)
- Yu Zhu Yang
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China; Department of Basic Teaching, Zunyi Medical and Pharmaceutical College, Zunyi 563006, PR China
| | - Wan Xiang Qiu
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Zi Yi Xu
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Zhe Sun
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Min Qing
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Nian Bing Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
| | - Hong Qun Luo
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
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Xu ZY, Wu Y, Wang XH, Chen JR, Luo HQ, Li NB. Designing of a high-performance fluorescent small molecule enables dual-mode and ultra-sensitive fluorescence visualizing of HSO 3- and HClO in dried fruit, beverage, and water samples. Food Chem 2022; 397:133754. [PMID: 35882164 DOI: 10.1016/j.foodchem.2022.133754] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 07/06/2022] [Accepted: 07/18/2022] [Indexed: 11/04/2022]
Abstract
Herein, a novel hemicyanine derivative (E)-3-(1,1-dimethyl-2-(4-(methylthio)styryl)-1H-benzo[e]indol-3-ium-3-yl)propane-1-sulfonate (BIS) has been reasonably designed. Compound BIS is long-wavelength emissive and water-soluble with a large Stokes shift. Intriguingly, probe BIS provides a dual-mode fluorescence response pattern for the sensing of bisulfite (HSO3-) and hypochlorous acid (HClO) with great limit of detections (3.6 and 57.4 nM). First, the 1,4-Michael addition of HSO3- on the conjugated double bond triggers a ratiometric response (I465/I575). Second, the rapid oxidation of HClO on the thioether moiety provides a turn-on response (I575). Evaluation of HSO3- and HClO levels in dried fruit, beverage, and water samples has been carried out with satisfactory results. Moreover, motivated by an impressive chromatic variation (red to blue), smartphone-assisted signal readout system and thin-film sensing platform are facilely constructed for real-time and on-site measurement of HSO3- levels. Furthermore, probe BIS is used for the in vivo imaging of HSO3- in edible fish models.
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Affiliation(s)
- Zi Yi Xu
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - You Wu
- Key Laboratory of Freshwater Fish Reproduction and Development, Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing 400715, PR China
| | - Xiao Hu Wang
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Jing Rong Chen
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Hong Qun Luo
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
| | - Nian Bing Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
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24
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Li T, Fu HC, Chen XH, Gu F, Li NB, Luo HQ. Interface engineering of core-shell Ni 0.85Se/NiTe electrocatalyst for enhanced oxygen evolution and urea oxidation reactions. J Colloid Interface Sci 2022; 618:196-205. [PMID: 35338926 DOI: 10.1016/j.jcis.2022.03.063] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 03/12/2022] [Accepted: 03/14/2022] [Indexed: 12/22/2022]
Abstract
The development of highly efficient oxygen evolution reaction (OER) and urea oxidation reaction (UOR) electrocatalysts with abundant resources is necessary for green hydrogen production. Ni-based compounds have received attention as the most promising earth-abundant electrocatalysts for OER and UOR, whereas some compounds in this main group, e.g., nickel selenides and tellurides, have received little attention. Herein, we demonstrate the interfacial engineered Ni0.85Se/NiTe array on Ni foam as a highly efficient catalyst for the OER, which exhibits an overpotential of 200 mV to obtain a current density of 10 mA cm-2 in alkaline solutions. Meanwhile, it exhibits a low potential of 1.301 V for the UOR at a current density of 100 mA cm-2. In particular, it even has the potential to be used in methanol oxidation reaction and ethanol oxidation reaction. The vertical NiTe array not only serves as the conductive substrate for highly improving the mass loading of Ni0.85Se, but also triggers the strong electron interaction between two components, leading to increased adsorption sites available for the intermediates formed in the OER and UOR on the Ni0.85Se surface. This study provides a broad avenue to construct hierarchical nanostructures as outstanding electrocatalysts for efficient OER and UOR.
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Affiliation(s)
- Ting Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Hong Chuan Fu
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Xiao Hui Chen
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Fei Gu
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Nian Bing Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Hong Qun Luo
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
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25
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Du XJ, Chen Y, Qin LY, Luo HQ, Li NB, Li BL. Plasmonic Gold Nanoparticles Stain Hydrogels for the Portable and High-Throughput Monitoring of Mercury Ions. Environ Sci Technol 2022; 56:1041-1052. [PMID: 34964603 DOI: 10.1021/acs.est.1c07217] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The hybrid of l-cysteine and agarose can reduce HAuCl4 and support the rapid growth of plasmonic gold nanoparticles (Au NPs) in the hydrogel phase. The l-cysteine-doped agarose hydrogel (C-AGH) not only offers the substrate the capacity to reduce Au(III) ions but also stabilizes and precisely modulates the in situ grown Au NPs with high repeatability, easy operation, and anti-interference performance. Herein, before the incubation of HAuCl4, the improved hydrogel is preincubated in the aqueous solution containing mercury ions, and the cysteine can specifically conjugate with mercury via the thiol groups. Subsequently, the responsive allochroic bands from dark blue to red can be identified in the solid hydrogel after the incubation of HAuCl4, which is attributed to the formation of regulated Au-Hg nanoamalgams. As a proof-of-concept, toxic Hg2+ ions are exploited as targets for constructing novel sensing assays based on the improved C-AGH protocol. Based on naked-eye recognition, Hg2+ could be rapidly and simply measured. Additionally, the high-throughput and trace analysis with a low limit of detection (3.7 nM) is performed using a microplate reader. On the basis of the filtering technique and remodeling of hydrogels, C-AGH working as the filtering membrane can even achieve the integration of enrichment and measurement with enhanced sensitivity. Significantly, the strategy of using an allochroic hydrogel with the staining of Au NPs can promote the rapid and primary assessment of water quality in environmental analysis.
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Affiliation(s)
- Xiao Juan Du
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Yang Chen
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
- School of Architecture and Urban Planning, Chongqing University, Chongqing 400030, P. R. China
| | - Ling Yun Qin
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Hong Qun Luo
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Nian Bing Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Bang Lin Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
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Tang Q, Sun Z, Qing M, Wang L, Ling Y, Li NB, Luo HQ. An optical sensing system with ratiometric and turn-off dual-mode of CDs@MnO 2 nanosheets for the determination of H 2O 2 and glucose based on a combination of first-order scattering, fluorescence, and second-order scattering. Spectrochim Acta A Mol Biomol Spectrosc 2022; 264:120299. [PMID: 34474221 DOI: 10.1016/j.saa.2021.120299] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 07/14/2021] [Accepted: 08/15/2021] [Indexed: 06/13/2023]
Abstract
The optical sensor with ratiometric and turn-off dual modes is constructed to detect H2O2 and glucose based on blue fluorescent carbon dots (CDs) and MnO2 nanosheets with great ability of fluorescence quenching and scattering. Employing CDs@MnO2 nanosheets nanocomposite as the probe, H2O2 is detected by simultaneously collecting first-order scattering (FOS, 353.5 nm), fluorescence (440 nm), and second-order scattering (SOS, 710 nm) under the excitation of 350 nm. H2O2 with strong oxidation property can etch the lamellar structure of MnO2 nanosheets into nano-fragments, which made the fluorescence of CDs in the system recover and the scattering intensity (FOS and SOS) of the system decrease significantly. Therefore, the optical sensor combined FOS and fluorescence signals in ratiometric mode, and SOS signal in turn-off mode to realize sensitive determination of H2O2. The linear ranges of ratiometric mode and turn-off mode for H2O2 detection were 0.2-40 and 0.2-15 μM, respectively. And the limits of detection (LODs) of two modes were 73 and 104 nM, respectively. Furthermore, the sensor was also successfully applied to the detection of glucose which can react to produce H2O2. Satisfactorily, the LODs of this sensor for glucose detection were 95 and 113 nM for ratiometric mode and turn-off mode, respectively. This work not only provides a new method for the accurate detection of H2O2 and glucose, but also extends a new idea for the study of the combination of scattering and fluorescence.
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Affiliation(s)
- Qian Tang
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Zhe Sun
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Min Qing
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Lei Wang
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Yu Ling
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Nian Bing Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
| | - Hong Qun Luo
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
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Ling Y, He LZ, Wan CC, Han L, Wang XH, Xu ZY, Li XL, Li NB, Luo HQ. ZIF-8@GMP-Tb nanocomplex for ratiometric fluorescent detection of alkaline phosphatase activity. Spectrochim Acta A Mol Biomol Spectrosc 2022; 264:120230. [PMID: 34358784 DOI: 10.1016/j.saa.2021.120230] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 07/19/2021] [Accepted: 07/23/2021] [Indexed: 06/13/2023]
Abstract
Luminescent metal-organic frameworks (LMOFs) and their functional materials with unique characteristics can provide the basis for the construction of new analytical techniques, which can meet the continuous demand for various fields. In this work, guanosine monophosphate (GMP), terbium ion (Tb3+) and zeolitic imidazolate framework-8 (ZIF-8) are self-assembled to form a ZIF-8@GMP-Tb nanocomplex, which can be utilized as a ratiometric fluorescent probe to monitor alkaline phosphatase (ALP) activity. Specifically, with adding ALP, the fluorescence intensity at 547 nm (one of the characteristic emission peaks of Tb3+) obviously decreased. Meanwhile, the conjugated structure of GMP increased the fluorescence of ZIF-8 (located at 330 nm). The possible mechanism was proposed through the characterization of the materials. Based on the variation of the emission peaks at 330 and 547 nm, the ratiometric fluorescent sensor of ALP has a linear range of 0.25-20 U/L. Moreover, applying this sensing system to the detection of ALP in the human serum sample and ALP inhibitor investigation possesses satisfactory results. This work provides a new perspective for the utilization of ZIF-8 and lanthanide ions in manufacturing simple and sensitive sensors.
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Affiliation(s)
- Yu Ling
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Lin Zhao He
- Chongqing Academy of Metrology and Quality Inspection, Chongqing 400715, People's Republic of China
| | - Chu Chu Wan
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Lei Han
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Xiao Hu Wang
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Zi Yi Xu
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Xiao Lin Li
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Nian Bing Li
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Hong Qun Luo
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
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28
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Yang YZ, Xu ZY, Li NB, Luo HQ. Ultrasensitive fluorescent probe for visual biosensing of esterase activity in living cells and its imaging application. Spectrochim Acta A Mol Biomol Spectrosc 2021; 262:120094. [PMID: 34175764 DOI: 10.1016/j.saa.2021.120094] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 06/13/2021] [Accepted: 06/16/2021] [Indexed: 06/13/2023]
Abstract
Esterase activity is often used as an index to evaluate the health status of cells and plays an important role in cell metabolism and apoptosis. Herein, we develop two fluorescent probes for visual biosensing of esterase activity and imaging in living cells. In vitro, after the introduction of esterase, enzymolysis destroys the ester bond of the probe, causing the fluorescent color of probe changes from yellow to red, thus realizing the visual strategy for determination of esterase activity, with high sensitivity and selectivity. Especially, probe VA, 2-(4-acetoxystyryl)-3-ethyl-1,1-dimethyl- 1H-benzo[e]indol-3-ium, exhibits higher sensitivity with a lower detection limit (up to 7.15 × 10-6 U/mL). In the cell experiment, the fluorescent probe VA also shows good biocompatibility and high spatial resolution, and is successfully applied to the intracellular fluorescent imaging and biosensing of esterase in living cells. More importantly, the probe VA can judge the unhealthy state of H2O2-induced HeLa cells using dual-fluorescence signals. The results confirm that the fluorescence method is a reliable tool for detecting endogenous esterase in living biological system.
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Affiliation(s)
- Yu Zhu Yang
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China; Department of Basic Teaching, Zunyi Medical and Pharmaceutical College, Zunyi 563006, PR China
| | - Zi Yi Xu
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Nian Bing Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
| | - Hong Qun Luo
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
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29
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Luo JJ, Qin LY, Du XJ, Luo HQ, Li NB, Li BL. Mercury ion-engineering Au plasmonics on MoS 2 layers for absorption-shifted optical sensors. Anal Methods 2021; 13:5436-5440. [PMID: 34763345 DOI: 10.1039/d1ay01637g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Semiconducting MoS2 layers offer the electrons, reducing conjugated Au(I) to Au atoms, and sebsequently serve as desirable substrates for supporting the interfacial growths of gold nanostructures. Au-covering MoS2 heterostructures perform morphology-varied optical characteristics, and the surface engineering of MoS2 involved by Hg2+ ions results in the differential growths of nanostructures and morphological diversities. Naked-eye colorimetric responses to mercury ions, with a low limit of detection of 1.27 nM, are achieved based on the in situ grown heterostructures.
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Affiliation(s)
- Jun Jiang Luo
- Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China.
- Hanhong College, Southwest University, Chongqing 400715, P. R. China
| | - Ling Yun Qin
- Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China.
| | - Xiao Juan Du
- Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China.
| | - Hong Qun Luo
- Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China.
| | - Nian Bing Li
- Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China.
| | - Bang Lin Li
- Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China.
- Hanhong College, Southwest University, Chongqing 400715, P. R. China
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30
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Li T, Zhang Q, Wang XH, Luo J, Shen L, Fu HC, Gu F, Li NB, Luo HQ. Selenium-induced NiSe 2@CuSe 2 hierarchical heterostructure for efficient oxygen evolution reaction. Nanoscale 2021; 13:17846-17853. [PMID: 34668912 DOI: 10.1039/d1nr05109a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Electrochemical water splitting is widely studied in the hope of solving environmental deterioration and energy shortage. The design of inexpensive metal catalysts exhibiting desired catalytic performance and durable stability for efficient oxygen evolution is the pursuit of sustainable and clean energy fields. Herein, a three-dimensional (3D) flower-like NiSe2 primary structure, modified with highly dispersed CuSe2 nanoclusters as the secondary structure, is obtained by regulating the growth trend of the nanosheets. Benefiting from the metallicity of selenides and the formation of a heterogeneous interface, NiSe2@CuSe2/NF shows comparable performance toward the oxygen evolution reaction (OER) in an alkaline environment. Upon regulating the synthesis conditions, the catalyst exhibits its optimal performance with ultralow overpotential for the OER when the Ni/Cu molar ratio is 1 : 0.2 and the hydrothermal temperature and hydrothermal time are 200 °C and 6 h, respectively. It provides a current density of 10 mA cm-2 when a potential of 201 mV is applied without iR compensation. In this work, the hierarchical heterostructures of NiSe2 and CuSe2 are synthesized, which exhibit high electrocatalytic activity towards the oxygen evolution reaction and provides a new possibility for the extensive application of copper-based compounds in advanced energy fields.
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Affiliation(s)
- Ting Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Qing Zhang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Xiao Hu Wang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Juan Luo
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Li Shen
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Hong Chuan Fu
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Fei Gu
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Nian Bing Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Hong Qun Luo
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
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31
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Qing M, Fan Y, Chen SL, Luo HQ, Li NB. 'Plug and play' microelectrode assisted with Y-motif-mediated primer-free cyclic signal amplification for sensitive quantitation of DNA methyltransferase activity. Biosens Bioelectron 2021; 192:113487. [PMID: 34256263 DOI: 10.1016/j.bios.2021.113487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 07/04/2021] [Indexed: 11/18/2022]
Abstract
DNA methyltransferase (MTase), modulating the level of genomic DNA methylation, harbors both a pharmacological target for clinical therapy and a potential biomarker for genetic disorders and tumorigenesis. Typical homogeneous electrochemical approaches, employing solution phase probes, have been considered simple, efficient, and economical method, yet these architectures usually require electroactive molecules labeling, rely on weak electrostatic adsorption interaction, and possess low sensitivity. For circumventing the above drawbacks, herein, we devise a 'plug and play' microelectrode featuring microminiaturization, rapid response time and enhanced mass transport to quantify MTase activity through monitoring the variation of diffusion current of methylene blue (MB) induced by the less-mobile G-quadruplex framework. By coupling the unique signal-transduction approach with Y-motif-mediated primer-free cyclic signal amplification (YPCSA), the miniaturized biosensor possesses low detection limit (down to 2.5 × 10-4 U mL-1), high specificity, good stability and satisfying reusability, and has been successfully applied to the screening of MTase inhibitors, holding great potential in clinical diagnosis and pharmacological research.
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Affiliation(s)
- Min Qing
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Yi Fan
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Sheng Liang Chen
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Hong Qun Luo
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China.
| | - Nian Bing Li
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China.
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Qing M, Chen SL, Sun Z, Fan Y, Luo HQ, Li NB. Universal and Programmable Rolling Circle Amplification-CRISPR/Cas12a-Mediated Immobilization-Free Electrochemical Biosensor. Anal Chem 2021; 93:7499-7507. [PMID: 33980009 DOI: 10.1021/acs.analchem.1c00805] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The development of a sensing platform with high sensitivity and specificity, especially programmability and universal applicability, for the detection of clinically relevant molecules is highly valuable for disease monitoring and confirmation but remains a challenge. Here, for the first time, we introduce the clustered regularly interspaced short palindromic repeats (CRISPR)/Cas system into an immobilization-free electrochemical biosensing platform for sensitively and specifically detecting the disease-related nucleic acids and small molecules. In this strategy, a modular rolling circle amplification (RCA) is designed to transform and amplify the target recognition event into the universal trigger DNA strand that is used as the trigger to activate the deoxyribonuclease activity of CRISPR/Cas12a for further signal amplification. The cleavage of the target-activated blocker probe allows the methylene blue-labeled reporter probes to be captured by the reduced graphene oxide-modified electrode, leading to an obviously increased electrochemical signal. We only need to simply tune the sequence for target recognition in RCA components, and this strategy can be flexibly applied to the highly sensitive and specific detection of microRNAs, Parvovirus B19 DNA, and adenosine-5'-triphosphate and the calculated limit of detection is 0.83 aM, 0.52 aM, and 0.46 pM, respectively. In addition, we construct DNA logic circuits (YES, NOT, OR, AND) of DNA inputs to experimentally demonstrate the modularity and programmability of the stimuli-responsive RCA-CRISPR/Cas12a system. This work broadens the application of the CRISPR/Cas12a system to the immobilization-free electrochemical biosensing platform and provides a new thinking for developing a robust tool for clinical diagnosis.
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Affiliation(s)
- Min Qing
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road, BeiBei District, Chongqing 400715, P. R. China
| | - Sheng Liang Chen
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road, BeiBei District, Chongqing 400715, P. R. China
| | - Zhe Sun
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road, BeiBei District, Chongqing 400715, P. R. China
| | - Yi Fan
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road, BeiBei District, Chongqing 400715, P. R. China
| | - Hong Qun Luo
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road, BeiBei District, Chongqing 400715, P. R. China
| | - Nian Bing Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing, School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road, BeiBei District, Chongqing 400715, P. R. China
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Qing M, Chen SL, Zhou J, Luo HQ, Li NB. Spatially localized amplification reaction with accelerated target conversion for sensitive microRNA detection. Talanta 2021; 232:122422. [PMID: 34074408 DOI: 10.1016/j.talanta.2021.122422] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 04/05/2021] [Accepted: 04/08/2021] [Indexed: 12/29/2022]
Abstract
Herein, we construct an ingenious spatially localized amplification reaction (SLAR) by colocalizing the entropy-driven reaction (EDR) in a nanometer space, which greatly accelerates target conversion and realizes the sensitive detection of microRNA-21 (miRNA-21). A large number of EDR complex are hybridized with the prefabricated DNA scaffold via a DNA self-assembly strategy to form the SLAR nanoprobe. Target miRNA-21 triggers interval EDR along the long DNA scaffold, resulting in fluorescence recovery with high signal gain because of the fast release of reporter. Compared with reactions with diffusible components, spatial arrangement of all components of EDR on a nanoscale scaffold can increase the local concentration of reactants, accelerating the interaction between adjacent components, and can also avoid the influence of stochastic diffusion to reduce the unintentional binding interaction between further separated components. Therefore, this SLAR assay displayed an excellent analytical performance for miRNA-21 detection with a detection limit of 6 pM and showed good specificity in distinguishing miRNA-21 from similar miRNAs. In addition, the proposed assay has been experimentally demonstrated for estimation of miRNA-21 in MCF-7 and HeLa cells lysates, which exhibited great promise in the sensitive detection of biomarkers in early diagnosis.
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Affiliation(s)
- Min Qing
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Sheng Liang Chen
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Jiao Zhou
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Hong Qun Luo
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China.
| | - Nian Bing Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China.
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Zhang XY, Han L, Dan Yu L, Wang XH, Ling Y, Li NB, Luo HQ. Crystal Violet-Sensitized Direct Z-Scheme Heterojunction Coupled with a G-Wire Superstructure for Photoelectrochemical Sensing of Uracil-DNA Glycosylase. ACS Appl Mater Interfaces 2021; 13:15881-15889. [PMID: 33779139 DOI: 10.1021/acsami.1c01525] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Dye sensitization achieving photoelectrochemical (PEC) signal amplification for ultrasensitive bioanalysis has undergone a major breakthrough. In this proposal, an innovative PEC sensing platform is developed by combining Z-scheme WO3@SnS2 photoactive materials and a G-wire superstructure as well as a dye sensitization enhancement strategy. The newly synthesized WO3@SnS2 heterojunction with outstanding PEC performance is employed as a photoelectrode matrix. Due to the formation of the Z-scheme heterojunction between WO3 and SnS2, the migration dynamics of the photogenerated carrier is evidently augmented. To improve sensitivity, the target excision-driven dual-cycle signal amplification strategy is introduced to output exponential c-myc fragments. Crystal violet is then conjugated into the G-quadruplex to amplify the PEC signal, where crystal violet generates excited electrons by capturing visible light and rapidly injects electrons into the conduction band of SnS2, suppressing the recombination of the photo-induced carrier. Moreover, the G-wire superstructure acts as a universal amplification pathway, ensuring adequate crystal violet loads. Specifically, the biosensor for uracil-DNA glycosylase quantification displays a wide detection range (0.0005-1.0 U/mL) and a lower detection limit (0.00025 U/mL). Furthermore, the Z-scheme electron migration mechanism and the crystal violet sensitization effect are discussed in detail. The construction of the PEC sensor provides a new consideration for signal amplification and material design.
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Affiliation(s)
- Xing Yue Zhang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Lei Han
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Ling Dan Yu
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Xiao Hu Wang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Yu Ling
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Nian Bing Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Hong Qun Luo
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
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Qin LY, Zhang HL, Gong W, Luo HQ, Li NB, Li BL. Aggregation-induced responses (AIR) of 2D-derived layered nanostructures enable emerging colorimetric and fluorescence sensors. Analyst 2020; 145:7464-7476. [PMID: 33030157 DOI: 10.1039/d0an01522a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Layered nanostructures (LNs), including two-dimensional nanosheets, nanoflakes, and planar nanodots, show large surface-to-volume ratios, unique optical properties, and desired interfacial activities. LNs are highly promising as alternative probes and platforms due to numerous merits, e.g. signal amplification, improved recognition ability, and anti-interference capacity, for emerging sensing applications. Significantly, when stimuli-responsive aggregation occurs, the modified LNs show engineered morphologies, attractive optical absorption and fluorescence characteristics, which are remarkably programmable. On the basis of the altered aggregation behaviours of LNs, as well as their modulated physical and chemical characteristics, a series of novel sensing assays exhibiting enhanced sensitivity, simple operation, multiple functions, and improved anti-interference capacity are reported, contributing to both point-of-care testing and high-throughput measurements. Herein, the aggregation-induced response sensing strategies of LNs are comprehensively summarized with the classification of materials and variation of aggregated routes aiming at understanding dimension-dependent features, expanding nanoscale biosensor applications, and addressing key issues in disease diagnosis and environmental analysis.
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Affiliation(s)
- Ling Yun Qin
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China.
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Wu LL, Yang YX, Chen XH, Luo J, Fu HC, Shen L, Luo HQ, Li NB. Cu 2O@Fe-Ni 3S 2 nanoflower in situ grown on copper foam at room temperature as an excellent oxygen evolution electrocatalyst. Chem Commun (Camb) 2020; 56:12339-12342. [PMID: 32930292 DOI: 10.1039/d0cc04893c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Herein, we have synthesized successfully a three-dimensional/two dimensional (3D/2D) core-shell Cu2O@Fe-Ni3S2 nanoflower on copper foam at room temperature. Remarkably, by virtue of rich active sites and vacancies, large surface area, high conductivity and close contact with the electrolyte, the Cu2O@Fe-Ni3S2 catalyst exhibits superior stability and oxygen evolution reaction performance.
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Affiliation(s)
- Li Li Wu
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China.
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Han L, Fan YZ, Qing M, Liu SG, Yang YZ, Li NB, Luo HQ. Smartphones and Test Paper-Assisted Ratiometric Fluorescent Sensors for Semi-Quantitative and Visual Assay of Tetracycline Based on the Target-Induced Synergistic Effect of Antenna Effect and Inner Filter Effect. ACS Appl Mater Interfaces 2020; 12:47099-47107. [PMID: 33003698 DOI: 10.1021/acsami.0c15482] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Development of selective and sensitive methods for on-site assay of tetracycline (TC) is of great significance for public health and food safety. Herein, a valid ratiometric fluorescence strategy using g-C3N4 nanosheets coupled with Eu3+ is designed for the assay of TC. In this strategy, both Eu3+ and g-C3N4 nanosheets serve as the recognition units of TC. The blue fluorescence of g-C3N4 nanosheets can be quenched by TC via the inner filter effect (IFE); meanwhile, the red fluorescence of Eu3+ can be enhanced by TC through the antenna effect (AE). The synergistic effect of AE and IFE caused by TC makes the developed ratiometric fluorescent sensor display a wide linear range for TC from 0.25 to 80 μM with a detection limit of 6.5 nM and a significant fluorescence color evolution from blue to red. Given its simplicity, free-label, excellent selectivity, high sensitivity, and recognizable color change, point-of-care testing systems, including smartphones and test paper-based assays, are developed for the visual sensing of TC. The integration of smartphones and test paper on a ratiometric fluorescent sensor greatly reduces the detection cost and time, providing a promising method for the qualitative discernment and semi-quantitative assay of TC on-site. Moreover, the potential application of the approach is also verified by detecting TC in milk.
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Affiliation(s)
- Lei Han
- School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road, BeiBei District, Chongqing 400715, P. R. China
| | - Yu Zhu Fan
- School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road, BeiBei District, Chongqing 400715, P. R. China
| | - Min Qing
- School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road, BeiBei District, Chongqing 400715, P. R. China
| | - Shi Gang Liu
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, P. R. China
| | - Yu Zhu Yang
- School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road, BeiBei District, Chongqing 400715, P. R. China
| | - Nian Bing Li
- School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road, BeiBei District, Chongqing 400715, P. R. China
| | - Hong Qun Luo
- School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road, BeiBei District, Chongqing 400715, P. R. China
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Luo J, Guo WH, Zhang Q, Wang XH, Shen L, Fu HC, Wu LL, Chen XH, Luo HQ, Li NB. One-pot synthesis of Mn-Fe bimetallic oxide heterostructures as bifunctional electrodes for efficient overall water splitting. Nanoscale 2020; 12:19992-20001. [PMID: 32996530 DOI: 10.1039/d0nr05864e] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The design of Earth-abundant and cost-effective electrocatalysts for highly active and stable electrochemical water splitting in practical production is the primary demand. Herein, bimetallic oxides anchored to three-dimensional (3D) porous conductive nickel foam (NF) are constructed using a simple in situ hydrothermal method for efficient overall water splitting. The vertically aligned Mn3O4/Fe2O3 heterojunction nanosheets have synergy between hierarchical metal oxides and heterogeneous interface, and show excellent performance toward the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in an alkaline environment. By adjusting the molar ratio of Fe : Mn, the morphology, composition and electronic structure of MnFeO-NF-x composites (x represents the ratio of Fe : Mn) can be adjusted to exhibit diverse catalytic activities. In particular, MnFeO-NF-0.4 (0.4 indicates the Fe : Mn ratio of 0.4 : 1) and MnFeO-NF-0.8 display outstanding performance with ultralow overpotentials of 157 mV for the OER and 64 mV for the HER to achieve a current density of 10 mA cm-2, respectively. Furthermore, MnFeO-NF-0.4 and MnFeO-NF-0.8 are assembled into a water splitting electrolyzer, which can reach a current density of 10 mA cm-2 with a low voltage of 1.59 V. Interestingly, Mn-M (M = Co, Ni, and Mo) products can be obtained easily by using different metal salts, indicating the universality of the current one-pot hydrothermal method.
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Affiliation(s)
- Juan Luo
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Wan Hui Guo
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Qing Zhang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Xiao Hu Wang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Li Shen
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Hong Chuan Fu
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Li Li Wu
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Xiao Hui Chen
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Hong Qun Luo
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Nian Bing Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
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Li X, Zhang J, Zhang C, Chen D, Wang B, Zhang R, Zhang Y, Yan X, Gan Q, Wang S, Luo HQ, Li NB. Crystalline MoP-amorphous MoS2 hybrid for superior hydrogen evolution reaction. J SOLID STATE CHEM 2020. [DOI: 10.1016/j.jssc.2020.121564] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Wang L, Ling Y, Han L, Zhou J, Sun Z, Li NB, Luo HQ. Catalase active metal-organic framework synthesized by ligand regulation for the dual detection of glucose and cysteine. Anal Chim Acta 2020; 1131:118-125. [PMID: 32928472 DOI: 10.1016/j.aca.2020.07.051] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 06/15/2020] [Accepted: 07/20/2020] [Indexed: 10/23/2022]
Abstract
Mimic enzymes greatly improve the inherent insufficiencies of natural enzymes. Therefore, mimic enzyme sensors attract increasing research interest. Metal-organic framework (MOF) is emerging in the field of mimic enzyme catalysis due to its remarkable structural properties. In this paper, a colorimetric method is designed for rapid and sensitive detection of glucose and cysteine levels. The MOF Eu-pydc (pydc-2,5-pyridinedicarboxylic acid) is synthesized by a new strategy which is regulated by ligands at room temperature and found to have peroxidase activity. Then, the MOF is used as a mimic enzyme to catalyze chromogenic substrate (3,3',5,5'-tetramethylbenzidine, TMB) for colorimetric sensing of glucose. The developed method can accurately detect glucose in the range of 10 μM-1 mM (R2 = 0.9958) with a relatively low detection limit about 6.9 μM. Moreover, a cysteine sensor with a detection limit of 0.28 μM is also established based on the disappearance of the color of oxTMB. Additionally, the proposed glucose sensor exhibits excellent selectivity and is successfully applied to blood glucose detection. At the same time, the detection of cysteine is also highly sensitive. In short, the dual sensor is fast, low cost, and convenient, and has great application potential in the diagnosis of disease.
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Affiliation(s)
- Lei Wang
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Yu Ling
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Lei Han
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Jiao Zhou
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Zhe Sun
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Nian Bing Li
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China.
| | - Hong Qun Luo
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China.
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Dong Li, Luo HQ, Li NB. A Tin Film CMK-3 Modified Carbon Paste Electrode as an Environmentally Friendly Sensor to Detect Trace Cadmium. J Anal Chem 2020. [DOI: 10.1134/s1061934820090099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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42
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Fan YZ, Han L, Yang YZ, Sun Z, Li N, Li BL, Luo HQ, Li NB. Multifunctional Binding Strategy on Nonconjugated Polymer Nanoparticles for Ratiometric Detection and Effective Removal of Mercury Ions. Environ Sci Technol 2020; 54:10270-10278. [PMID: 32697576 DOI: 10.1021/acs.est.0c00702] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Developing a multifunctional platform for the selective detection and effective removal of toxic ions is a major challenge when addressing heavy metal contamination in environmental science. Herein, novel nonconjugated polymer nanoparticles (PNPs) called mercaptosuccinic acid-thiosemicarbazide PNPs (MT-PNPs) with appealing fluorescence and stability are synthesized via facile one-step hydrothermal treatment for attractive sensing and simultaneous removal of mercury(II). Interestingly, aggregation-induced fluorescence switch-off and scattering enhancement are found upon the addition of Hg2+, rendering MT-PNPs as a ratiometric sensor for selective and accurate Hg2+ monitoring. A wide linear range (0.1-1471 μM) and a low detection limit (95 nM) are obtained. This dual-signal opposite responses triggered by Hg2+ originate from the formation of MT-PNP-Hg2+ congeries via the multisite binding between S,N,O-containing groups of MT-PNPs and mercury. Meanwhile, target-induced aggregation renders an effective Hg2+ separation from contaminative aqueous media by MT-PNPs, which exhibits a satisfactory absorption efficiency of 90.42% within 50 min. Upon the simple Na2S treatment, the MT-PNPs can be regenerated and reused. This work thus delivers an applicable method for the ratiometric detection and effective removal of mercury with the novel nonconjugated PNPs, offering potential in tackling the problem of heavy metal ion pollution for environmental monitoring and remediation.
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Affiliation(s)
- Yu Zhu Fan
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Lei Han
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Yu Zhu Yang
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Zhe Sun
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Na Li
- School of Pharmaceutical Science, Nanchang University, Nanchang 330006, P. R. China
| | - Bang Lin Li
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Hong Qun Luo
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Nian Bing Li
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
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Tang Q, Fan YZ, Han L, Yang YZ, Li NB, Luo HQ. Redox induced dual-signal optical sensor of carbon dots/MnO 2 nanosheets based on fluorescence and second-order scattering for the detection of ascorbic acid. Mikrochim Acta 2020; 187:475. [PMID: 32737591 DOI: 10.1007/s00604-020-04459-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 07/16/2020] [Indexed: 01/04/2023]
Abstract
In order to detect ascorbic acid (AA) sensitively, a dual-signal optical sensor of a nanosystem with carbon dots (CDs)/MnO2 nanosheets based on fluorescence and second-order scattering (SOS) has been constructed. Here, MnO2 nanosheets, both as a fluorescence quencher and signal transducer of SOS, quench the blue fluorescence of CDs by an inner filter effect. Under the excitation of 300 nm, the nanosystem shows a fluorescence emission peak at 405 nm and a SOS peak at 610 nm, respectively. With the increase of AA , the lamellar structure of MnO2 nanosheets is etched into a smaller nanostructure, causing a decrease of the fluorescence recovery of CDs (405 nm) and decrease of the SOS signal of the MnO2 nanosheets (610 nm). According to the simultaneous changes of fluorescence and SOS signals, a dual-signal optical sensor toward AA is successfully constructed. Satisfactorily, the optical sensor for AA detection shows a detection limit of 88 and 105 nM for fluorescence and SOS, respectively. The practical application of the designed sensor is verified through the detection of AA content in vitamin C tablets, and satisfactory results are obtained Graphical Abstract A dual-signal sensor of fluorescence (FL) and second-order scattering (SOS) based on the carbon dot (CD) and MnO2 nanosheet system for ascorbic acid (AA) detection is constructed, in which CDs are used for the FL mode and MnO2 nanosheets are used for the SOS mode.
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Affiliation(s)
- Qian Tang
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, People's Republic of China
| | - Yu Zhu Fan
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, People's Republic of China
| | - Lei Han
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, People's Republic of China
| | - Yu Zhu Yang
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, People's Republic of China
| | - Nian Bing Li
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, People's Republic of China.
| | - Hong Qun Luo
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, People's Republic of China.
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Li BL, Zou HL, Luo HQ, Leong DT, Li NB. Layered MoS 2 defect-driven in situ synthesis of plasmonic gold nanocrystals visualizes the planar size and interfacial diversity. Nanoscale 2020; 12:11979-11985. [PMID: 32459251 DOI: 10.1039/d0nr02838j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Current defect theories significantly guide broad research progress, whereas the recognition of defect status remains challenging. Herein, MoS2 defect type, density and exposed state are visually identified with a reagent indicator of HAuCl4. Mo-terminated defects spontaneously reduce [AuCl4]- anions and oxidized Mo species are dissociated. Consequently, MoS2 edges guide the epitaxial branch of Au nanocrystals (NCs), followed by sequential growths at their planar defects. The size-evolution processes of LaMer growth and planar packages of the aggregative growth of Au/MoS2 nanoseeds result in the occupation of Au atomic layers on heterostructures. Consequently, shell-core hybrids are presented with localized surface plasmon resonance characteristics. The mechanism is systematically explored via the discriminated performance of plasmonic characteristics of Au nanostructures on semiconducting MoS2 substrates. With plasmonic identification, defect-associated size and interfacial diversities of MoS2 are visually information-rich. Tunable morphologies and synergistic optical characteristics of plasmonic semiconductor heterostructures inspire many more applications through the edge and planar defects intrinsic in layered MoS2.
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Affiliation(s)
- Bang Lin Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China.
| | - Hao Lin Zou
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China.
| | - Hong Qun Luo
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China.
| | - David Tai Leong
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117585, Singapore.
| | - Nian Bing Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China.
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45
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Qing M, Chen SL, Han L, Yang YZ, Luo HQ, Li NB. Three–dimensional donor–acceptor–type photoactive material/conducting polyaniline hydrogel complex for sensitive photocathodic enzymatic bioanalysis. Biosens Bioelectron 2020; 158:112179. [DOI: 10.1016/j.bios.2020.112179] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 03/24/2020] [Accepted: 03/26/2020] [Indexed: 12/14/2022]
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Shen ZZ, Li K, Li ZJ, Shang XL, Hu F, Zhou WJ, Wang HL, Luo HQ. Seroprevalence of Toxoplasma gondii infection in people in southeast Hubei province, China. Trop Biomed 2020; 37:452-457. [PMID: 33612814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Toxoplasma gondii is a world-widely spread zoonotic parasite. However, scarce knowledge is known about the prevalence of T. gondii infection in people in Hubei province, China. This study herein was to perform epidemiological investigation of T. gondii infection in people in this region. A total 12527 blood samples were obtained during 2015-2018, and were assayed for T. gondii antibodies of IgG and IgM, respectively by employing an indirect hemagglutination test (IHA). The results discovered that the prevalence of T. gondii in people was 2.44% and 6.1%, respectively based on antibodies of IgG and IgM, respectively. The prevalence was ranged from 0.3% to 5.4% during 2015-2018 based on IgM antibodies. For genders, the prevalence was 0.7% and 2.6% in males and females, respectively based on IgM antibodies. In different years, the prevalence was ranged from 4.9% to 14.0% based on IgG antibodies. The prevalence of T. gondii was 4.9% and 6.6% in males and femalesy based on IgG antibodies. The current results may be helpful for the implementation of preventive measures against Toxoplasma infection among people living in this region.
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Affiliation(s)
- Zh Zh Shen
- Hubei Key Laboratory for Kidney Disease Pathogenesis and Intervention, Hubei Polytechnic University, Medical School, Huangshi 435003, Hubei, China
| | - K Li
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Z J Li
- Hubei Key Laboratory for Kidney Disease Pathogenesis and Intervention, Hubei Polytechnic University, Medical School, Huangshi 435003, Hubei, China
| | - X L Shang
- Department of Medical laboratory, Huangshi Central Hospital, Affiliated Hospital of Hubei Polytechnic University, Huangshi435000, Hubei, China
| | - F Hu
- Department of Medical laboratory, Huangshi Central Hospital, Affiliated Hospital of Hubei Polytechnic University, Huangshi435000, Hubei, China
| | - W J Zhou
- Qilu Animal Health Products Co., LTD., Jinan, Shandong, 250100, China
| | - H L Wang
- Department of Medical laboratory, Huangshi Central Hospital, Affiliated Hospital of Hubei Polytechnic University, Huangshi435000, Hubei, China
| | - H Q Luo
- College of Animal Science, Wenzhou Vocational College of Science and Technology, Wenzhou, Zhejiang, 325006, China
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Sun Z, Fan YZ, Du SZ, Yang YZ, Ling Y, Li NB, Luo HQ. Conversion of Fluorescence Signals into Optical Fingerprints Realizing High-Throughput Discrimination of Anionic Sulfonate Surfactants with Similar Structure Based on a Statistical Strategy and Luminescent Metal–Organic Frameworks. Anal Chem 2020; 92:7273-7281. [DOI: 10.1021/acs.analchem.0c00907] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Zhe Sun
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Yu Zhu Fan
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Shi Zhe Du
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Yu Zhu Yang
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Yu Ling
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Nian Bing Li
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Hong Qun Luo
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
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48
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Yang YZ, Xiao N, Cen YY, Chen JR, Liu SG, Shi Y, Fan YZ, Li NB, Luo HQ. Dual-emission ratiometric nanoprobe for visual detection of Cu(II) and intracellular fluorescence imaging. Spectrochim Acta A Mol Biomol Spectrosc 2019; 223:117300. [PMID: 31284240 DOI: 10.1016/j.saa.2019.117300] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 06/12/2019] [Accepted: 06/20/2019] [Indexed: 06/09/2023]
Abstract
Copper is an essential mineral nutrient for the human body. However, excessive levels of copper accumulated in the body can cause some diseases. Therefore, it is great significant to establish a sensitive bioprobe to recognize copper ions (Cu2+) in vivo. In our work, nitrogen-doped carbon dots (N-CDs) and gold nanoclusters (Au NCs) are selected as luminescent nanomaterials and the Au NCs/N- CDs nanohybrids is successfully synthesized by coupling method. The Au NCs/N-CDs exhibited characteristic dual-emission peaks at 450 and 620 nm when excited by a single-wavelength of 380 nm. When different amounts of Cu2+ are introduced, the fluorescence intensity of the Au NCs is gradually weakened and fluorescence intensity of the N-CDs is almost unchanged, which can facilitate the visual detection of Cu2+. The Au NCs/N-CDs nanohybrid possesses good selectivity to Cu2+ with a limit of detection (LOD) is 3.5 μM and linear detection range of 10-150 μM. Visualization detection of Cu2+ is implemented by using nanoprobe in water samples. Furthermore, the ratiometric nanoprobe is utilized to the toxicity test of liver cancer cells, indicating excellent biocompatibility and low toxicity. This nanoprobe has been used to the intracellular fluorescence imaging. Moreover, this method is expected to be used to monitor the changes of Cu2+ concentration in hepatocytes.
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Affiliation(s)
- Yu Zhu Yang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Na Xiao
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Yu Yan Cen
- Department of Hygiene Toxicology, School of Public Health, Zunyi Medical College, Zunyi, Guizhou 563000, PR China
| | - Jing Rong Chen
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Shi Gang Liu
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Yan Shi
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Yu Zhu Fan
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Nian Bing Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
| | - Hong Qun Luo
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
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Yang YZ, Xiao N, Liu SG, Han L, Li NB, Luo HQ. pH-induced aggregation of hydrophilic carbon dots for fluorescence detection of acidic amino acid and intracellular pH imaging. Mater Sci Eng C Mater Biol Appl 2019; 108:110401. [PMID: 31923930 DOI: 10.1016/j.msec.2019.110401] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 10/22/2019] [Accepted: 11/05/2019] [Indexed: 12/21/2022]
Abstract
Intracellular pH level plays an important role in physiological and pathological processes. The development of nanoprobes for detecting in vivo pH levels is especially important for early diagnosis of disease. Therefore, we develop a hydrophilic carbon points (CDs) using quercetin and ethylenediamine as precursors to monitor intracellular pH. Under optimized conditions, the prepared CDs not only have uniform particle size and morphology, but also possess strong green fluorescence, photostability, and photoreversibility in water medium. The CDs exhibit pH-sensitive fluorescence effect under acidic and alkaline conditions, which is used to achieve "off-on-off" detection pH (from 3.5 to 13.5). Meanwhile, the pH-dependent mechanism is further investigated and explained, which is the fluorescence quenching caused by the pH-induced aggregation. Based on the pH-sensitive characteristics of CDs, it has been applied to the detection of aspartic acid and glutamic acid. More importantly, when applied to live cells, the pH-probe exhibits low cytotoxicity and high sensitivity, and is successfully used in intracellular pH fluorescence imaging. Consequently, this nanoprobe is expected to be used for real-time monitoring of intracellular pH level.
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Affiliation(s)
- Yu Zhu Yang
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China; Department of Basic Teaching, Zunyi Medical and Pharmaceutical College, Zunyi 563006, PR China
| | - Na Xiao
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Shi Gang Liu
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Lei Han
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Nian Bing Li
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
| | - Hong Qun Luo
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
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50
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Liang JY, Han L, Liu SG, Ju YJ, Li NB, Luo HQ. Carbon dots-based fluorescent turn off/on sensor for highly selective and sensitive detection of Hg 2+ and biothiols. Spectrochim Acta A Mol Biomol Spectrosc 2019; 222:117260. [PMID: 31226617 DOI: 10.1016/j.saa.2019.117260] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 06/06/2019] [Accepted: 06/08/2019] [Indexed: 05/20/2023]
Abstract
In this work, sodium salicylate and ethylenediamine (EDA) are used as the precursors to synthesize green fluorescent carbon dots (CDs). The CDs have some attractive properties, including better oxidation resistance, good water solubility, and excellent stability in high ionic strength solutions in a pH range of 6.0-10.0. Compared to other metal ions, only Hg2+ can quench the fluorescence of CDs, and with the introduction of biothiols, the fluorescence of the CDs/Hg2+ system can be recovered. Therefore, a turn off/on fluorescent sensor is constructed using CDs as a fluorescent probe, and the sensor is applied to the detection of Hg2+ and biothiols (glutathione, homocysteine and cysteine). In addition, the fluorescent sensor exhibits excellent selectivity and sensitivity. The linear range of Hg2+ is 0.05-10 μM with the detection limit of 44 nM. Glutathione, homocysteine, and cysteine have a linear response in the range of 0.5-10 μM with the limit of detection of 80, 76, and 69 nM, respectively. Furthermore, the fluorescence method is successfully used to detect Hg2+ in actual water samples and biothiols in human plasma.
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Affiliation(s)
- Jia Yu Liang
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Lei Han
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Shi Gang Liu
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Yan Jun Ju
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Nian Bing Li
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
| | - Hong Qun Luo
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
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