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Wang H, Lai J, Xu X, Yu W, Wang X. Combination of gold nanoclusters and silicon quantum dots for ratiometric fluorometry: One system, two mechanisms. J Pharm Biomed Anal 2024; 240:115940. [PMID: 38198882 DOI: 10.1016/j.jpba.2023.115940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 12/21/2023] [Accepted: 12/23/2023] [Indexed: 01/12/2024]
Abstract
A ratiometric fluorometry based on silicon quantum dots (SiQDs) and gold nanoclusters (AuNCs) is constructed for detecting activity of butyrylcholinesterase (BChE) in human serum. By using thiobutyrylcholine iodide (BTCh) as the substrate of BChE-catalyzed hydrolysis reaction, variation of fluorescence emission from AuNCs is employed as an indicator of BChE activity since one of the hydrolysis products, thiocholine (TCh), would influence the aggregation state of AuNCs and consequently led to the change of fluorescence quantum efficiency of AuNCs. It is interesting that there are two mechanisms working for the fluorescence emission of aggregated AuNCs: aggregation-induced emission enhancement (AIEE) and aggregation-caused quenching (ACQ) with the presence of TCh at very low and higher concentration levels, respectively. Although both of these mechanisms can be utilized for sensing BChE, their opposite influence on the fluorescence emission of aggregated AuNCs should be worthy of attention, especially in the process of developing fluorescence methods for detecting trace targets by using AuNCs. In order to eliminate the fluctuation of fluorophotometer, SiQDs is chosen as the fluorophore to develop by ratiometric fluorescence methods in this work. Additionally, obvious aggregation of AuNCs induces significant decrease of inner filter effect (IFE) on the fluorescence emitted from SiQDs, while mild aggregation of AuNCs demonstrates little IFE. The linear ranges for detecting activity of BChE are 0.004 - 0.05 U/L and 0.5 - 20 U/L by ratiometric fluorometry based on the AIEE and ACQ, respectively. The very different responses originated from AIEE and ACQ of AuNCs would respectively make their own contributions to the determination of BChE activities at very low or high levels, which facilitate the developments of enhanced or quenched fluorescence methods. However, the detection of BChE activities at medium levels might suffer from the combination of AIEE and ACQ with ambiguous fractions. Therefore, it must be careful during the processes of developing and applying fluorescence methods based on the AIEE and ACQ of AuNCs, as well as the process of evaluating their analytical performance.
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Affiliation(s)
- Haozhi Wang
- College of Chemistry, Jilin Province Research Center for Engineering and Technology of Spectral Analytical Instruments, Jilin University, Qianjin Street 2699, Changchun 130012, China
| | - Jinyu Lai
- College of Chemistry, Jilin Province Research Center for Engineering and Technology of Spectral Analytical Instruments, Jilin University, Qianjin Street 2699, Changchun 130012, China
| | - Xiaohui Xu
- College of Chemistry, Jilin Province Research Center for Engineering and Technology of Spectral Analytical Instruments, Jilin University, Qianjin Street 2699, Changchun 130012, China
| | - Wei Yu
- Department of Plastic and Reconstructive Microsurgery, China-Japan Union Hospital, Jilin University, Xiantai Street 126, Changchun 130033, China
| | - Xinghua Wang
- College of Chemistry, Jilin Province Research Center for Engineering and Technology of Spectral Analytical Instruments, Jilin University, Qianjin Street 2699, Changchun 130012, China.
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Mahmoud AM, Mahnashi MH, El-Wekil MM. Ratiometric fluorescence sensing of hazardous ciprofloxacin based on aggregation induced emission enhancement of thiolate-protected gold nanoclusters induced by La 3+ ion. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 304:123347. [PMID: 37688885 DOI: 10.1016/j.saa.2023.123347] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 08/10/2023] [Accepted: 09/04/2023] [Indexed: 09/11/2023]
Abstract
In this research work, ultrasensitive and reliable ratiometric sensor was designed for assay of ciprofloxacin (CIPRO). The platform consists of thiolate-protected gold nanoclusters (GSH@AuNCs) with high fluorescence quantum yield and long-term stability. In the existence of lanthanum (La3+) ion, the GSH@AuNCs emission was sharply raised owing to the formation of La3+/GSH@AuNCs system accompanied with aggregation-induced emission enhancement (AIEE). Addition of CIPRO, a good La3+ ion coordinator, decreased the fluorescence emission of La3+/GSH@AuNCs system at 610 nm significantly as a result of disaggregation caused by the removal of La3+ ion from GSH@AuNCs surface. Furthermore, the blue emission of La3+-CIPRO coordination complex appears at 440 nm. Under optimized conditions, the fluorescence ratios (F440/F610) were linearly increased with increasing the CIPRO amount within the range of 0.003-200 µM with a limit of detection equal to 0.2 nM (S/N = 3). The as-fabricated La3+/GSH@AuNCs system possesses outstanding reliability and sensitivity for the detection of CIPRO. The system was effectively used to assay CIPRO in human urine and milk specimens with recoveries % of 97.6-102.3 % and 96.7-105.7 % for urine and milk samples, respectively and RSD % did not exceed 2.5 %, suggesting the accuracy of the method.
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Affiliation(s)
- Ashraf M Mahmoud
- Department of Pharmaceutical Chemistry, College of Pharmacy, Najran University, Najran, Saudi Arabia
| | - Mater H Mahnashi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Najran University, Najran, Saudi Arabia
| | - Mohamed M El-Wekil
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt.
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3
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He Y, Dai L, Hu L, Lei Y, Wang M. Ratiometric fluorescent detection of total phosphates in frozen shrimp samples using catalytic active Zr(IV) modified gold nanoclusters. Food Chem 2023; 426:136564. [PMID: 37327763 DOI: 10.1016/j.foodchem.2023.136564] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 05/16/2023] [Accepted: 06/05/2023] [Indexed: 06/18/2023]
Abstract
Phosphate salts are important food additives in a variety of foods. In this study, the Zr(IV) modified gold nanoclusters (Au NCs) were prepared for ratiometric fluorescent sensing of phosphate additives in seafood samples. Compared with bare Au NCs, the synthesized Zr(IV)/Au NCs showed stronger orange fluorescence at 610 nm. On the other hand, the Zr(IV)/Au NCs retained the phosphatase-like activity of Zr(IV) ions and could catalyze the hydrolysis of fluorescent substrate 4-methylumbelliferyl phosphate to produce blue emission at 450 nm. The addition of phosphate salts could effectively inhibit the catalytic activity of Zr(IV)/Au NCs, resulting the fluorescence decrease at 450 nm. However, the fluorescence at 610 nm almost unchanged upon the addition of phosphates. Based on this finding, the ratiometric detection of phosphates using the fluorescence intensity ratio (I450/I610) was demonstrated. The method has been further applied for sensing total phosphates in frozen shrimp samples with satisfactory results.
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Affiliation(s)
- Yuting He
- Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, China
| | - Ling Dai
- Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, China
| | - Lianzhe Hu
- Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, China.
| | - Yao Lei
- School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Min Wang
- School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China.
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Meng H, Wang Y, Wu R, Li Y, Wei D, Li M, Zhu N, Zhu F, Zhang Z, Zhao H. Identification of multi-component metal ion mixtures in complex systems using fluorescence sensor arrays. JOURNAL OF HAZARDOUS MATERIALS 2023; 455:131546. [PMID: 37163891 DOI: 10.1016/j.jhazmat.2023.131546] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 04/24/2023] [Accepted: 04/29/2023] [Indexed: 05/12/2023]
Abstract
The growing co-contamination of multiple metal ions seriously influences human health due to their synergistic and additive toxicological effects, whereas the rapid discrimination of multiple heavy metal ions in complex aquatic systems remains a major challenge. Herein, a high- throughput fluorescence sensor array was fabricated based on three gold nanoclusters (GSH-Au NCs, OVA-Au NCs, and BSA-Au NCs) for the direct identification and quantification of seven heavy metal ions (Pb2+, Fe3+, Cu2+, Co2+, Ag+, Hg2+ and As3+) from environmental waters without sample pretreatment other than filtration. At the detection system, three gold nanoclusters with various ligands possessed distinct binding capacities against metal ions and induced aggregation-induced fluorescence enhancement and quenching, resulting in a unique pattern of fluorescence variations. Meanwhile, integrated the collected fluorescence fingerprints with linear discriminant analysis (LDA) and hierarchical cluster analysis (HCA), a discrete database was obtained for the accurate recognition and sensitive detection of metal ions. Under the optimized conditions, the limit of detection (LOD) of the proposed fluorescence sensor array for metal ions detection at nM concentration level along with a satisfactory accuracy. Importantly, our study indicated that the fluorescence sensor array could be widely used as a general platform in environmental monitoring against multiple targets at low concentrations.
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Affiliation(s)
- Hui Meng
- School of Emergency Management, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Ying Wang
- School of Emergency Management, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Ruoxi Wu
- School of Emergency Management, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yumo Li
- School of Emergency Management, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Dali Wei
- School of Emergency Management, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Mingwei Li
- School of Emergency Management, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Nuanfei Zhu
- School of Emergency Management, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Fang Zhu
- School of Emergency Management, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Zhen Zhang
- School of Emergency Management, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Hongjun Zhao
- Department of Pulmonary and Critical Care Medicine, Quzhou People's Hospital, The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou 324000, China.
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Zhang W, Jiang X, Wu Y, Jiang J, Liu X, Liu Y, Wang W, Lai J, Wang X. Emission enhancement of fluorescent glutathione-capped gold nanoclusters by cerium (III) ion-induced aggregation for sensitive detecting α-glucosidase in human serum using ratiometric fluorometry. Microchem J 2022. [DOI: 10.1016/j.microc.2022.108049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Zhang B, Liu W, Wu X, Zhu J, Hu W, El Jaouhari A, Liu X. Facile Preparation of Fluorescent Carbon Dots from Glutathione and l-Tryptophan for Sensitive and Selective Off/On Detection of Fe 3+ Ions in Serum and Their Bioimaging Application. ACS OMEGA 2022; 7:7853-7864. [PMID: 35284715 PMCID: PMC8912430 DOI: 10.1021/acsomega.1c06757] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 02/14/2022] [Indexed: 06/14/2023]
Abstract
In the past decade, carbon dots (CDs) have attracted considerable attention due to their excellent properties such as low toxicity, good biocompatibility, good fluorescence imaging, etc. Here, glutathione and l-tryptophan were used as carbon sources to hydrothermally synthesize CDs for sensitive and selective off/on detection of Fe3+ ions. The CDs are spherical nanoparticles with an average particle size of 3.8 nm and the presence of organic groups such as hydroxyl, carboxyl, sulfhydryl, and amino groups on their surface. The experiment results display that Fe3+ ions can be selectively and sensitively detected by quenching the fluorescence of CDs. Moreover, the fluorescence of the CDs+Fe3+ system can be restored after adding ascorbic acid. Thus, an off/on fluorescent probe for the determination of Fe3+ can be formed using the as-synthesized CDs solution. The CDs show a good linear range of 0-13.89 mM and a 0.0331 μM limit of detection for Fe3+, and the most probable mechanism concluded from ultraviolet-visible spectroscopy, electrospray ionization-mass spectrometry, and fluorescence spectrophotometry is a mixed static and dynamic quenching. Furthermore, the cytotoxicity experiment results show that CDs have low toxicity and can be used for intracellular imaging.
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Ruan S, Zhou Y, Zhang M, Zhang H, Wang Y, Hu P. Rapid determination of cysteine and chiral discrimination of D-/L-cysteine via the aggregation-induced emission enhancement of gold nanoclusters by Ag . ANAL SCI 2022; 38:541-551. [PMID: 35359272 DOI: 10.2116/analsci.21p207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 10/14/2021] [Indexed: 11/23/2022]
Abstract
Cysteine (Cys) plays vital roles in various physiological and pathological functions. Either a deficiency or excess of Cys could lead to severe ailments in human. The identification and determination of Cys are the key issues for the early diagnosis of relevant diseases. This contribution has presented a promising potential of fluorescent gold nanoclusters (AuNCs) for Cys determination and D-/L-Cys enantiomer discrimination. Cys determination and discrimination are involved three steps. First, as a reducing and capping ligand, glutathione was applied to fabricate weak fluorescent AuNCs. Second, Ag+ was introduced to lead the aggregation-induced emission (AIE) to form well-dispersed aggregates. The fluorescence intensity of AuNCs was monitored at excitation/emission wavelengths of 396/620 nm. Third, Cys was found to quickly bind with Ag+ to form a grid network to light up the system via aggregation-induced emission enhancement (AIEE). A novel sensor for a sensitive and a visually selective detection of Cys was established on the basis of the AIEE mechanism. Rapid quantitative determination of Cys was achieved in 2 min via AIEE within the range of 0.5-100 μmol L-1 and a detection limit of 0.365 μmol L-1. Moreover, due to the specific interactions of D-/L-Cys with mandelic acid and tartaric acid, the visual discrimination of D-/L-Cys enantiomers with naked eyes was realized by replacing the organic acid buffer.
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Affiliation(s)
- Shengli Ruan
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Yan Zhou
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy Department, Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, East China University of Science and Technology, Shanghai, 200237, China
| | - Min Zhang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy Department, Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, East China University of Science and Technology, Shanghai, 200237, China.
| | - Hongyang Zhang
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Yuerong Wang
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Ping Hu
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China.
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Sonia, Komal, Kukreti S, Kaushik M. Gold nanoclusters: An ultrasmall platform for multifaceted applications. Talanta 2021; 234:122623. [PMID: 34364432 DOI: 10.1016/j.talanta.2021.122623] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 06/12/2021] [Accepted: 06/14/2021] [Indexed: 01/22/2023]
Abstract
Gold nanoclusters (Au NCs) with a core size below 2 nm form an exciting class of functional nano-materials with characteristic physical and chemical properties. The properties of Au NCs are more prominent and extremely different from their bulk counterparts. The synthesis of Au NCs is generally assisted by template or ligand, which impart excellent cluster stability and high quantum yield. The tunable and sensitive physicochemical properties of Au NCs open horizons for their advanced applications in various interdisciplinary fields. In this review, we briefly summarize the solution phase synthesis and origin of the characteristic properties of Au NCs. A vast review of recent research work introducing biosensors based on Au NCs has been presented along with their specifications and detection limits. This review also highlights recent progress in the use of Au NCs as bio-imaging probe, enzyme mimic, temperature sensing probe and catalysts. A speculation on present challenges and certain future prospects have also been provided to enlighten the path for advancement of multifaceted applications of Au NCs.
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Affiliation(s)
- Sonia
- Nano-bioconjugate Chemistry Lab, Cluster Innovation Centre, University of Delhi, Delhi, India; Nucleic Acids Research Laboratory, Department of Chemistry, University of Delhi, Delhi, India
| | - Komal
- Nano-bioconjugate Chemistry Lab, Cluster Innovation Centre, University of Delhi, Delhi, India; Nucleic Acids Research Laboratory, Department of Chemistry, University of Delhi, Delhi, India
| | - Shrikant Kukreti
- Nucleic Acids Research Laboratory, Department of Chemistry, University of Delhi, Delhi, India
| | - Mahima Kaushik
- Nano-bioconjugate Chemistry Lab, Cluster Innovation Centre, University of Delhi, Delhi, India.
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Yi M, Ma L, Zhao W, Zhao J, Fan Q, Hao J. Amphiphilic Au Nanoclusters Modulated by Magnetic Gemini Surfactants as a Cysteine Chemosensor and an MRI Contrast Agent. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:3130-3138. [PMID: 33657799 DOI: 10.1021/acs.langmuir.0c03618] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Cationic magnetic Gemini surfactants (mag-G-surfs), [C14H29(CH3)2N(CH2)2N(CH3)2C14H29]2+·2[XCl3Br]- (14-2-14·2X, X = Ce, Gd, or Ho), efficiently induce the aggregation of glutathione-protected Au nanoclusters (NCs) (GSH-Au NCs). These magnetic luminescent aggregates not only possess aggregation-induced emission (AIE) behavior but also display aggregation-induced magnetic enhancement. In particular, 14-2-14·2Ce and 14-2-14·2Gd have a better effect on boosting the luminescence intensity, quantum yield (QY), and luminescence lifetime (τ). The luminescent aggregates of GSH-Au NCs triggered by 14-2-14·2Gd or 14-2-14·2Ho exhibit more favorable paramagnetic behavior. Other Au NCs containing a Au(I)-thiolate complex shell also exhibit the obvious AIE phenomenon after introducing 14-2-14·2Gd, demonstrating the luminescence enhancement effect of mag-G-surfs. The luminescent aggregate 14-2-14·2Ce@GSH-Au NCs can serve as a "light up" fluorometric probe to detect cysteine selectively with the detection limit (DL) of 36 μM, and the magnetic luminescent aggregate 14-2-14·2Gd@GSH-Au NCs has the potential to be a novel contrast agent in T1-weighted magnetic resonance (MR) imaging due to its satisfactory contrasting ability.
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Affiliation(s)
- Mengjiao Yi
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education & State Key Laboratory of Crystal Materials & Key Laboratory of Special Aggregated Materials, Ministry of Education, Shandong University, Jinan 250100, P. R. China
| | - Lin Ma
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education & State Key Laboratory of Crystal Materials & Key Laboratory of Special Aggregated Materials, Ministry of Education, Shandong University, Jinan 250100, P. R. China
| | - Wenrong Zhao
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education & State Key Laboratory of Crystal Materials & Key Laboratory of Special Aggregated Materials, Ministry of Education, Shandong University, Jinan 250100, P. R. China
| | - Jie Zhao
- Qilu Hospital, Shandong University, Jinan 250012, P. R. China
| | - Qi Fan
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education & State Key Laboratory of Crystal Materials & Key Laboratory of Special Aggregated Materials, Ministry of Education, Shandong University, Jinan 250100, P. R. China
| | - Jingcheng Hao
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education & State Key Laboratory of Crystal Materials & Key Laboratory of Special Aggregated Materials, Ministry of Education, Shandong University, Jinan 250100, P. R. China
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Yuan Y, Zhou R, Li T, Qu S, Bai H, Liang J, Cai X, Guo B. Enriched Au nanoclusters with mesoporous silica nanoparticles for improved fluorescence/computed tomography dual-modal imaging. Cell Prolif 2021; 54:e13008. [PMID: 33634540 PMCID: PMC8016642 DOI: 10.1111/cpr.13008] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 01/21/2021] [Accepted: 01/24/2021] [Indexed: 02/05/2023] Open
Abstract
Objectives Au nanoclusters (AuNCs) have been used widely in fluorescence bio‐imaging because of their good fluorescence, small particle size and non‐cytotoxicity. AuNCs are also efficient in computed tomography (CT) imaging. Hence, a dual‐modal imaging probe can be constructed without any complicated modification processes by exploiting the excellent performance of AuNCs. In the present study, AuNCs were enriched with mesoporous silica nanoparticles (MSNs) to obtain enhanced fluorescence/CT dual‐modal imaging, which was capable of acquiring more imaging information for diseases compared with single‐mode imaging. Materials and methods Biocompatible bovine serum albumin (BSA)‐capped AuNCs were prepared and loaded into amine‐functionalized MSNs to form MSN@AuNCs. BSA‐AuNCs, MSNs, and MSN@AuNCs were characterized by ultraviolet‐visible (UV‐vis) spectra, transmission electron microscopy (TEM), fluorescence spectra, and zeta potential. CT imaging was recorded using micro‐CT scanning. Fluorescence imaging was measured using confocal laser scanning microscopy and flow cytometry. Results The prepared AuNCs and MSNs possessed good properties as previously reported. The fluorescence intensity and CT value of the AuNCs were enhanced after being enriched with MSNs. The nanoparticles were both non‐cytotoxic. Confocal laser scanning microscopy and flow cytometry indicated that MSN@AuNCs in CAL‐27 cells showed improved fluorescence imaging compared with simple AuNCs at the same concentration. Conclusions The results revealed that the strategy of enriching AuNCs with MSNs can obtain highly sensitive fluorescence/CT dual‐modal imaging, which indicated the potential of this nanoparticle in the diagnosis and treatment of disease.
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Affiliation(s)
- Yifang Yuan
- Department of Stomatology, Chinese PLA General Hospital, Beijing, China
| | - Ronghui Zhou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Ting Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Shuang Qu
- Department of Stomatology, Chinese PLA General Hospital, Beijing, China
| | - Hua Bai
- Department of Stomatology, Chinese PLA General Hospital, Beijing, China
| | - Jiawu Liang
- Department of Stomatology, Chinese PLA General Hospital, Beijing, China
| | - Xiaoxiao Cai
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Bin Guo
- Department of Stomatology, Chinese PLA General Hospital, Beijing, China
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Sahu S, Sharma S, Kant T, Shrivas K, Ghosh KK. Colorimetric determination of L-cysteine in milk samples with surface functionalized silver nanoparticles. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 246:118961. [PMID: 33010538 DOI: 10.1016/j.saa.2020.118961] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 09/12/2020] [Accepted: 09/13/2020] [Indexed: 06/11/2023]
Abstract
A simple, selective and sensitive method is proposed for determination of cysteine (Cys) in milk samples using ionic liquid functionalized silver nanoparticles (ILs-AgNPs) as a colorimetric probe. ILs-AgNPs was synthesized by simple reduction method using silver nitrate as a precursor and sodium borohydride as a reducing agent and functionalized with ILs to prevent particles from self-aggregation. The sensing mechanism has been dependent on the color change of ILs-AgNPs and red shift of absorption band from 395 nm to 560 nm in the visible region, which is found proportional to the concentration of target analyte in sample. ILs-AgNPs was characterized in absence and presence of Cys by UV-vis, Fourier transform-infrared (FTIR) spectroscopy, transmission electron microscope (TEM) and dynamic light scattering (DLS). The linear range was acquired in the range of 0-100 ng mL-1, with correlation coefficient (R2) of 0.996 and limit of detection (LOD) of 4.0 nM. The binding mechanism and interactions between Cys and ILs-AgNPs was confirmed by calculating the binding constant and thermodynamic parameters such as enthalpy (∆H), entropy (∆S) and Gibb's free energy (∆G). The use of ILs-AgNPs exhibited high colorimetric selectivity for Cys in milk samples in presence of other amino acids. This proposed strategy possessed the advantages of simplicity and selectivity, hence is applied for analysis of Cys in milk samples.
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Affiliation(s)
- Sushama Sahu
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur 492010, C.G., India
| | - Srishti Sharma
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur 492010, C.G., India
| | - Tushar Kant
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur 492010, C.G., India
| | - Kamlesh Shrivas
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur 492010, C.G., India
| | - Kallol K Ghosh
- School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur 492010, C.G., India.
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Kamaci UD, Kamaci M. Selective and Sensitive ZnO Quantum Dots Based Fluorescent Biosensor for Detection of Cysteine. J Fluoresc 2021; 31:401-414. [PMID: 33410089 DOI: 10.1007/s10895-020-02671-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 12/28/2020] [Indexed: 12/31/2022]
Abstract
In the present article, a novel and effective ZnO quantum dots-based fluorescent probe has been developed for the detection of cysteine in different solutions. Firstly, melamine-based fluorescent pre-probe was successfully synthesized via condensation reaction and, then ZnO quantum dots (QDs) were homogenously dispersed into this solution. This fluorescent probe was used for the detection of cysteine in different solutions such as bovine serum albumin and tap water. ZnO QDs were characterized using XRD, nano-particle size analyzer, and FE-SEM techniques. The size of the ZnO QDs was calculated as 28.03±9.86 nm, and 31.95±10.02 nm from Scherrer's equation and nano-particle size analyzer, respectively. The developed fluorescent probe was exhibited a highly selective and sensitive response to the detection of cysteine. Also, the proposed fluorescent probe has a larger Stokes shift value (236 nm). The limit of detection and linear range of ZnO QDs-based fluorescent biosensor were found as 0.642 μM and 0.1-600 μM, respectively. ZnO quantum dot-based fluorescent sensor for L-cysteine.
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Affiliation(s)
- Umran Duru Kamaci
- Faculty of Arts and Sciences, Department of Chemistry, Yildiz Technical University, 34220, Istanbul, Esenler, Turkey
| | - Musa Kamaci
- Piri Reis University, 34940, Istanbul, Tuzla, Turkey.
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Zhang Y, Yang M, Shao Z, Xu H, Chen Y, Yang Y, Xu W, Liao X. A paper-based fluorescent test for determination and visualization of cysteine and glutathione by using gold-silver nanoclusters. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105327] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Zhang Y, Xu H, Chen Y, You X, Pu Y, Xu W, Liao X. High-sensitivity Detection of Cysteine and Glutathione Using Au Nanoclusters Based on Aggregation-induced Emission. J Fluoresc 2020; 30:1491-1498. [PMID: 32897494 DOI: 10.1007/s10895-020-02618-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 09/01/2020] [Indexed: 01/25/2023]
Abstract
Gold nanoclusters (AuNCs) stabilized by glutathione (GSH) have been synthesized using a simple one-pot method, which were used as a fluorescence-enhanced probe for the detection of cysteine (Cys) and GSH. The detection is based on the finding that the weak yellow fluorescence of the AuNCs, with excitation/emission maxima of 430/600 nm, can be enhanced by Cys and GSH via NCs aggregation. This method is selective for Cys and GSH. According to the fluorescence enhancement, the detection ranges of AuNCs for Cys and GSH are 2.49 µM ~ 0.80 mM and 1.99 µM ~ 0.44 mM, with the detection limit of 0.42 µM and 0.27 µM, respectively. In addition, the probe has good anti-interference performance over other common biomolecules. Importantly, the probe is successfully used for the determination of Cys in human serum samples, displaying the potential application of the probe in the detection of biological sulfhydryl molecules in actual samples.
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Affiliation(s)
- Yuanyuan Zhang
- Chongqing Engineering Laboratory of Nano/Micro Biomedical Detection, Chongqing Key Laboratory of Nano/Micro Composite Materials and Devices, Chongqing University of Science and Technology, No. 12 East road, University town, 401331, Chongqing, People's Republic of China
| | - Hedan Xu
- Chongqing Engineering Laboratory of Nano/Micro Biomedical Detection, Chongqing Key Laboratory of Nano/Micro Composite Materials and Devices, Chongqing University of Science and Technology, No. 12 East road, University town, 401331, Chongqing, People's Republic of China
| | - Yan Chen
- Chongqing Engineering Laboratory of Nano/Micro Biomedical Detection, Chongqing Key Laboratory of Nano/Micro Composite Materials and Devices, Chongqing University of Science and Technology, No. 12 East road, University town, 401331, Chongqing, People's Republic of China
| | - Xiaoshuang You
- Chongqing Engineering Laboratory of Nano/Micro Biomedical Detection, Chongqing Key Laboratory of Nano/Micro Composite Materials and Devices, Chongqing University of Science and Technology, No. 12 East road, University town, 401331, Chongqing, People's Republic of China
| | - Yunxun Pu
- Chongqing Engineering Laboratory of Nano/Micro Biomedical Detection, Chongqing Key Laboratory of Nano/Micro Composite Materials and Devices, Chongqing University of Science and Technology, No. 12 East road, University town, 401331, Chongqing, People's Republic of China
| | - Wenfeng Xu
- Chongqing Engineering Laboratory of Nano/Micro Biomedical Detection, Chongqing Key Laboratory of Nano/Micro Composite Materials and Devices, Chongqing University of Science and Technology, No. 12 East road, University town, 401331, Chongqing, People's Republic of China
| | - Xiaoling Liao
- Chongqing Engineering Laboratory of Nano/Micro Biomedical Detection, Chongqing Key Laboratory of Nano/Micro Composite Materials and Devices, Chongqing University of Science and Technology, No. 12 East road, University town, 401331, Chongqing, People's Republic of China.
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15
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Li X, Qiao J, Li Z, Qi L. Fluorescence turn-off-on for highly selective detection of serum l-cysteine based on AuNCs-AuNPs ensembles. Analyst 2020; 145:2233-2237. [DOI: 10.1039/c9an02495f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The discriminative monitoring of l-cysteine in biological fluids is a great challenge. A fluorescent “turn-off-on” probe based on AuNCs-AuNPs ensembles for l-cysteine detection with high selectivity has been developed.
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Affiliation(s)
- Xiangfei Li
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Analytical Chemistry for Living Biosystems
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- P.R. China
| | - Juan Qiao
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Analytical Chemistry for Living Biosystems
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- P.R. China
| | - Zhiwei Li
- College of Chemical and Pharmaceutical Engineering
- Hebei University of Science and Technology
- Shijiazhuang 050018
- P.R. China
| | - Li Qi
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Analytical Chemistry for Living Biosystems
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- P.R. China
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16
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Zhang CX, Gao YC, Wang C, Yu X, Li HW, Wu Y. Aggregation-induced emission enhancement of adenosine monophosphate-capped bimetallic nanoclusters by aluminum(III) ions, and its application to the fluorometric determination of cysteine. Mikrochim Acta 2019; 187:41. [PMID: 31832775 DOI: 10.1007/s00604-019-3901-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 10/07/2019] [Indexed: 11/25/2022]
Abstract
The fluorescence of adenosine monophosphate-capped bimetallic gold and silver nanoclusters (type AuAgNC@AMP) is strongly enhanced and blue shifted in the presence of Al(III). As confirmed by transmission electron microscopy, the AuAgNC nanodots are converted to larger assembled spheres of type AuAgNC-Al(III). The fluorescence enhancement is attributed to aggregation-induced emission enhancement (AIEE). The fluorescence of the AuAgNC-Al(III) assembly (with excitation and emission maxima at 340 and 540 nm) is quenched by cysteine (Cys). The effect was applied to the fluorometric determination of Cys. The assay works in the 1.0 to 16.0 μM Cys concentration range and has a 50 nM limit of detection. The method was successfully applied to analyze Cys-spiked mineral waters and serum. The quenching mechanism is explored in depth. It is attributed to the partial replacement of AMP by Cys at the surface of the AuAgNC and alteration of the assembly structure from large spherical particles to a strip shape. Graphical abstractSchematic representation of the fluorescence enhancement of bimetallic nanoclusters capped with adenosine monophosphate by using Al(III), and its application in selective and sensitive determination of cysteine via ligand replacement and reassembly.
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Affiliation(s)
- Chun-Xia Zhang
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, No. 2699 Qianjin Street, Changchun, 130012, China
| | - Yan-Cai Gao
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, No. 2699 Qianjin Street, Changchun, 130012, China
| | - Chong Wang
- Department of Hepatic-Biliary-Pancreatic Medicine, First Hospital, Jilin University, Changchun, 130021, China
| | - Xu Yu
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, No. 2699 Qianjin Street, Changchun, 130012, China
| | - Hong-Wei Li
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, No. 2699 Qianjin Street, Changchun, 130012, China.
| | - Yuqing Wu
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, No. 2699 Qianjin Street, Changchun, 130012, China
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17
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Tan N, Lan C, Yin J, Meng L, Xu N. Selective Detection of Trace Metronidazole by Using a Magnetic Molecularly Imprinted Polymer‐based Fluorescent Probe. B KOREAN CHEM SOC 2019. [DOI: 10.1002/bkcs.11918] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Nai‐Di Tan
- College of Chemistry and Pharmaceutical Engineering, Jilin Institute of Chemical Technology Jilin 132022 China
| | - Chengwu Lan
- College of Materials Science and Engineering, Jilin Institute of Chemical Technology Jilin 132022 China
| | - Jian‐Hang Yin
- College of Chemistry and Pharmaceutical Engineering, Jilin Institute of Chemical Technology Jilin 132022 China
| | - Lei Meng
- College of Materials Science and Engineering, Jilin Institute of Chemical Technology Jilin 132022 China
| | - Na Xu
- College of Materials Science and Engineering, Jilin Institute of Chemical Technology Jilin 132022 China
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18
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Suo Z, Hou X, Hu Z, Liu Y, Xing F, Feng L. Fibrinogen-templated gold nanoclusters for fluorometric determination of cysteine and mercury(II). Mikrochim Acta 2019; 186:799. [DOI: 10.1007/s00604-019-3919-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 10/11/2019] [Indexed: 10/25/2022]
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