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Youn J, Kang P, Crowe J, Thornsbury C, Kim P, Qin Z, Lee J. Tripeptide-Assisted Gold Nanocluster Formation for Fe 3+ and Cu 2+ Sensing. Molecules 2024; 29:2416. [PMID: 38893292 PMCID: PMC11173388 DOI: 10.3390/molecules29112416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 05/15/2024] [Accepted: 05/17/2024] [Indexed: 06/21/2024] Open
Abstract
Fluorescent gold nanoclusters (AuNCs) have shown promise as metal ion sensors. Further research into surface ligands is crucial for developing sensors that are both selective and sensitive. Here, we designed simple tripeptides to form fluorescent AuNCs, capitalizing on tyrosine's reduction capability under alkaline conditions. We investigated tyrosine's role in both forming AuNCs and sensing metal ions. Two tripeptides, tyrosine-cysteine-tyrosine (YCY) and serine-cysteine-tyrosine (SCY), were used to form AuNCs. YCY peptides produced AuNCs with blue and red fluorescence, while SCY peptides produced blue-emitting AuNCs. The blue fluorescence of YCY- and SCY-AuNCs was selectively quenched by Fe3+ and Cu2+, whereas red-emitting YCY-AuNC fluorescence remained stable with 13 different metal ions. The number of tyrosine residues influenced the sensor response. DLS measurements revealed different aggregation propensities in the presence of various metal ions, indicating that chelation between the peptide and target ions led to aggregation and fluorescence quenching. Highlighting the innovation of our approach, our study demonstrates the feasibility of the rational design of peptides for the formation of fluorescent AuNCs that serve as highly selective and sensitive surface ligands for metal ion sensing. This method marks an advancement over existing methods due to its dual capability in both synthesizing gold nanoclusters and detecting analytes, specifically Fe3+ and Cu2+.
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Affiliation(s)
- Jonghae Youn
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, TX 75080, USA; (J.Y.); (P.K.)
- Department of Mechanical Engineering, The University of Texas at Dallas, Richardson, TX 75080, USA; (P.K.); (Z.Q.)
| | - Peiyuan Kang
- Department of Mechanical Engineering, The University of Texas at Dallas, Richardson, TX 75080, USA; (P.K.); (Z.Q.)
| | - Justin Crowe
- Department of Chemistry and Biochemistry, The University of Texas at Tyler, Tyler, TX 75799, USA; (J.C.); (C.T.)
| | - Caleb Thornsbury
- Department of Chemistry and Biochemistry, The University of Texas at Tyler, Tyler, TX 75799, USA; (J.C.); (C.T.)
| | - Peter Kim
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, TX 75080, USA; (J.Y.); (P.K.)
| | - Zhenpeng Qin
- Department of Mechanical Engineering, The University of Texas at Dallas, Richardson, TX 75080, USA; (P.K.); (Z.Q.)
- Department of Bioengineering, The University of Texas at Dallas, Richardson, TX 75080, USA
- Department of Surgery, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
- Center for Advanced Pain Studies, The University of Texas at Dallas, Richardson, TX 75080, USA
| | - Jiyong Lee
- Department of Chemistry and Biochemistry, The University of Texas at Tyler, Tyler, TX 75799, USA; (J.C.); (C.T.)
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Sebastian A, P K, Aarya, Sen Mojumdar S. Temperature-Induced Luminescence Intensity Fluctuation of Protein-Protected Copper Nanoclusters: Role of Scaffold Conformation vs Nonradiative Transition. ACS OMEGA 2024; 9:21520-21527. [PMID: 38764622 PMCID: PMC11097160 DOI: 10.1021/acsomega.4c02223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 04/03/2024] [Accepted: 04/23/2024] [Indexed: 05/21/2024]
Abstract
Protein-scaffolded atomically precise metal nanoclusters (NCs) have emerged as a promising class of biofriendly nanoprobes at the forefront of modern research, particularly in the area of sensing. The photoluminescence (PL) intensity of several nanoclusters showed a systematic temperature-dependent fluctuation, but the mechanism remains ambiguous and is poorly understood. We tried to shed some light on this mechanistic aspect by testing a couple of hypotheses: (i) conformational fluctuation of the protein scaffold-mediated PL intensity fluctuation and (ii) PL intensity fluctuation due to the variation in the radiative and nonradiative transition rates. Herein, the PL intensity of the lysozyme-capped copper nanocluster (Lys-Cu NC) showed excellent temperature dependency; upon increasing the temperature, the PL intensity gradually decreased. However, contrasting effects can be seen when the nanocluster is exposed to a chemical denaturant (guanidine hydrochloride (GdnHCl)); the PL intensity increased with the increase in the GdnHCl concentration due to the change in the ionic strength of the medium. This discrepancy clearly suggests that the thermal PL intensity fluctuation cannot be explained by a change in the scaffold conformation. Furthermore, upon closer investigation, we observed a 2-fold increase in the nonradiative decay rate of the Lys-Cu NC at the elevated temperature, which could reasonably explain the decrease in the PL intensity of the nanocluster at the higher temperature. Additionally, from the result, it was evident that the protein scaffold-metal core interaction played a key role here in stabilizing each other; hence, the scaffold structure remained unaffected even in the presence of chemical denaturants.
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Affiliation(s)
- Anna Sebastian
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad 678623, Kerala, India
| | - Kavya P
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad 678623, Kerala, India
| | - Aarya
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad 678623, Kerala, India
| | - Supratik Sen Mojumdar
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad 678623, Kerala, India
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3
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Li G, Pan Q, Zhang C, Wang J, Peng C, Wang Z. Fluorescence "turn-on" sensing for five PDE5 inhibitors in functional food based on bimetallic nanoclusters. Anal Chim Acta 2023; 1280:341883. [PMID: 37858562 DOI: 10.1016/j.aca.2023.341883] [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: 08/09/2023] [Revised: 10/01/2023] [Accepted: 10/06/2023] [Indexed: 10/21/2023]
Abstract
Some phosphodiesterase type-5 (PDE5) inhibitors are active ingredients of prescription drugs that are widely used in the treatment of erectile dysfunction (ED). Recently, a large number of substances with this activity have been developed. Illegal addition of PDE5 inhibitors to foods could lead to cardiovascular diseases and even death, which poses a serious threat to food safety, therefore an on-site rapid screening method is urgently needed. Herein, a host functionalized bimetallic nanoclusters, CD/Au Ag NCs, were synthesized through self-assembly of 6-Aza-2-thiothymine gold nanoclusters (ATT-Au NCs), Arginine silver nanoclusters (Arg-Ag NCs) and carboxymethyl β-cyclodextrin (β-CMCD). The introduction of Rhodamine 6G (R6G) could quench the fluorescence of CD/Au Ag NCs based on the inner filter effect (IFE) and fluorescence resonance energy transfer effect (FRET). Importantly, it was discovered that several PDE5 inhibitors exhibited a higher binding affinity to β-CMCD and could displace R6G binding with CD cavity, which disrupted the fluorescence quenching effects and resulted in the fluorescence recovery of CD/Au Ag NCs. This fluorescence turn-on signal could be utilized for the detection of PDE5 inhibitors. At present, emerging PDE5 inhibitor analogues pose a great challenge to food safety due to their unknown efficacy and safety. The proposed method holds the advantages of high sensitivity, simple probe synthesis, easy operation, and simultaneous detection of multiple PDE5 inhibitors. Meanwhile, the successful application in functional food sample demonstrated its high application potential in multiple PDE5 inhibitors screening.
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Affiliation(s)
- Guowen Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, PR China; School of Food Science and Technology, Jiangnan University, PR China
| | - Qiuli Pan
- Shandong Institute for Food and Drug Control, Xinluo Road 2749, Jinan, 250101, PR China
| | - Chun Zhang
- School of Life Science and Health Engineering, Jiangnan University, PR China
| | - Jun Wang
- Shandong Institute for Food and Drug Control, Xinluo Road 2749, Jinan, 250101, PR China
| | - Chifang Peng
- State Key Laboratory of Food Science and Technology, Jiangnan University, PR China; School of Food Science and Technology, Jiangnan University, PR China; International Joint Laboratory on Food Safety, Jiangnan University, PR China.
| | - Zhouping Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, PR China; School of Food Science and Technology, Jiangnan University, PR China; International Joint Laboratory on Food Safety, Jiangnan University, PR China
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4
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Rai A, Seena S, Gagliardi T, Palma PJ. Advances in the design of amino acid and peptide synthesized gold nanoparticles for their applications. Adv Colloid Interface Sci 2023; 318:102951. [PMID: 37392665 DOI: 10.1016/j.cis.2023.102951] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 05/31/2023] [Accepted: 06/14/2023] [Indexed: 07/03/2023]
Abstract
The field of therapeutics and diagnostics is advanced by nanotechnology-based approaches including the spatial-temporal release of drugs, targeted delivery, enhanced accumulation of drugs, immunomodulation, antimicrobial action, and high-resolution bioimaging, sensors and detection. Various compositions of nanoparticles (NPs) have been developed for biomedical applications; however, gold NPs (Au NPs) have attracted tremendous attention due to their biocompatibility, easy surface functionalization and quantification. Amino acids and peptides have natural biological activities as such, their activities enhance several folds in combination with NPs. Although peptides are extensively used to produce various functionalities of Au NPs, amino acids have also gained similar interests in producing amino acid-capped Au NPs due to the availability of amine, carboxyl and thiol functional groups. Henceforth, a comprehensive review is needed to timely bridge the synthesis and the applications of amino acid and peptide-capped Au NPs. This review aims to describe the synthesis mechanism of Au NPs using amino acids and peptides along with their applications in antimicrobial, bio/chemo-sensors, bioimaging, cancer therapy, catalysis, and skin regeneration. Moreover, the mechanisms of various activities of amino acid and peptide capped-Au NPs are presented. We believe this review will motivate researchers to better understand the interactions and long-term activities of amino acid and peptide-capped Au NPs for their success in various applications.
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Affiliation(s)
- Akhilesh Rai
- CNC- Center for Neuroscience and Cell Biology and Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal; Faculty of Medicine, University of Coimbra, Portugal.
| | - Sahadevan Seena
- MARE - Marine and Environmental Sciences Centre, ARNET-Aquatic Research Network, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | | | - Paulo J Palma
- Faculty of Medicine, University of Coimbra, Portugal
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Wang T, Liu W, Tian S, Tian D. Copper nanoclusters stabilized by D-penicillamine for ultrasensitive and visual detection of oxytetracycline. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 290:122286. [PMID: 36592593 DOI: 10.1016/j.saa.2022.122286] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 12/15/2022] [Accepted: 12/27/2022] [Indexed: 06/17/2023]
Abstract
Copper nanoclusters (DPA@CuNCs) with red fluorescence were successfully synthesized by a one-step method based on D-penicillamine (DPA), which acted not only as a reducing agent but also as a stabilizer. The products were characterized by Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy, particle-size analysis, ultraviolet-visible spectrophotometry, and fluorescence spectrometry. When the excitation wavelength was 280 nm, DPA@CuNCs emitted bright red fluorescence at 640 nm with a fluorescence quantum yield of 5.8 %. Due to the inner filter effect, oxytetracycline (OTC) effectively quenched the fluorescence of DPA@CuNCs, and then DPA@CuNCs were applied to the trace detection of OTC. The method showed a good linear range for OTC from 5 to 60 μmol/L, with a detection limit of 0.026 μmol/L and a correlation coefficient R2 of 0.9983. Moreover, a paper-based sensor for the visual detection of OTC has been developed, which can conveniently and rapidly distinguish the concentration ranges of OTC through the color changes of the test papers.
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Affiliation(s)
- Tengfei Wang
- School of Chemical and Environmental Engineering, Hubei Key Laboratory of Biological Resources Protection and Utilization, Hubei Minzu University, Enshi 445000, People's Republic of China
| | - Wei Liu
- School of Chemical and Environmental Engineering, Hubei Key Laboratory of Biological Resources Protection and Utilization, Hubei Minzu University, Enshi 445000, People's Republic of China
| | - Shiyao Tian
- School of Chemical and Environmental Engineering, Hubei Key Laboratory of Biological Resources Protection and Utilization, Hubei Minzu University, Enshi 445000, People's Republic of China
| | - Dating Tian
- School of Chemical and Environmental Engineering, Hubei Key Laboratory of Biological Resources Protection and Utilization, Hubei Minzu University, Enshi 445000, People's Republic of China.
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Li K, Kang D, Li Y, Zhu W, Zhu L, Zhang J, Xu C, Wei B, Wang H. A fluorescent sensing platform based on collagen peptides-protected Au/Ag nanoclusters and WS 2 for determining collagen triple helix integrity. Anal Chim Acta 2023; 1247:340900. [PMID: 36781253 DOI: 10.1016/j.aca.2023.340900] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 01/24/2023] [Indexed: 01/31/2023]
Abstract
The unique triple helix structure of collagen plays an important role in its biological properties, and the triple helix integrity is closely correlated with its molecular behavior and biological functions. Nevertheless, there is still a lack of convenient, accurate and practical methods for quantitatively determining collagen triple helix integrity. Herein, we first prepared bovine skin collagen peptide (BSCP)-protected Au/Ag nanoclusters (Au/AgNCs@BSCP) with excellent optical properties, high stability and good biocompatibility, which could adsorb on WS2 surface leading to fluorescence quenching. Upon the addition of collagen, the interaction of collagen and Au/AgNCs@BSCP led to the detachment of Au/AgNCs@BSCP from the WS2 surface, causing an increase in the fluorescence signal. Using the difference in the fluorescence recovery of the different samples, we achieved the quantitative determination of collagen triple helix integrity. This developed strategy exhibited excellent accuracy, selectivity, and practicality, thus showing promising potentials in biomedical applications.
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Affiliation(s)
- Ke Li
- School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, 430023, PR China
| | - Delai Kang
- School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, 430023, PR China
| | - Yu Li
- School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, 430023, PR China
| | - Weizhe Zhu
- School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, 430023, PR China
| | - Lian Zhu
- School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, 430023, PR China
| | - Juntao Zhang
- School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, 430023, PR China
| | - Chengzhi Xu
- School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, 430023, PR China
| | - Benmei Wei
- School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, 430023, PR China.
| | - Haibo Wang
- School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, 430023, PR China.
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7
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Ayodhya D. Recent progress on detection of bivalent, trivalent, and hexavalent toxic heavy metal ions in water using metallic nanoparticles: A review. RESULTS IN CHEMISTRY 2023. [DOI: 10.1016/j.rechem.2023.100874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023] Open
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8
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Bio-Inspired Drug Delivery Systems: From Synthetic Polypeptide Vesicles to Outer Membrane Vesicles. Pharmaceutics 2023; 15:pharmaceutics15020368. [PMID: 36839691 PMCID: PMC9965272 DOI: 10.3390/pharmaceutics15020368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 01/10/2023] [Accepted: 01/19/2023] [Indexed: 01/24/2023] Open
Abstract
Nanomedicine is a broad field that focuses on the development of nanocarriers to deliver specific drugs to targeted sites. A synthetic polypeptide is a kind of biomaterial composed of repeating amino acid units that are linked by peptide bonds. The multiplied amphiphilicity segment of the polypeptide could assemble to form polypeptide vesicles (PVs) under suitable conditions. Different from polypeptide vesicles, outer membrane vesicles (OMVs) are spherical buds of the outer membrane filled with periplasmic content, which commonly originate from Gram-negative bacteria. Owing to their biodegradability and excellent biocompatibility, both PVs and OMVs have been utilized as carriers in delivering drugs. In this review, we discuss the recent drug delivery research based on PVs and OMVs. These related topics are presented: (1) a brief introduction to the production methods for PVs and OMVs; (2) a thorough explanation of PV- and OMV-related applications in drug delivery including the vesicle design and biological assessment; (3) finally, we conclude with a discussion on perspectives and future challenges related to the drug delivery systems of PVs and OMVs.
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Luan X, Kong H, He P, Yang G, Zhu D, Guo L, Wei G. Self-Assembled Peptide-Based Nanodrugs: Molecular Design, Synthesis, Functionalization, and Targeted Tumor Bioimaging and Biotherapy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2205787. [PMID: 36440657 DOI: 10.1002/smll.202205787] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/14/2022] [Indexed: 06/16/2023]
Abstract
Functional nanomaterials as nanodrugs based on the self-assembly of inorganics, polymers, and biomolecules have showed wide applications in biomedicine and tissue engineering. Ascribing to the unique biological, chemical, and physical properties of peptide molecules, peptide is used as an excellent precursor material for the synthesis of functional nanodrugs for highly effective cancer therapy. Herein, recent progress on the design, synthesis, functional regulation, and cancer bioimaging and biotherapy of peptide-based nanodrugs is summarized. For this aim, first molecular design and controllable synthesis of peptide nanodrugs with 0D to 3D structures are presented, and then the functional customization strategies for peptide nanodrugs are presented. Then, the applications of peptide-based nanodrugs in bioimaging, chemotherapy, photothermal therapy (PTT), and photodynamic therapy (PDT) are demonstrated and discussed in detail. Furthermore, peptide-based drugs in preclinical, clinical trials, and approved are briefly described. Finally, the challenges and potential solutions are pointed out on addressing the questions of this promising research topic. This comprehensive review can guide the motif design and functional regulation of peptide nanomaterials for facile synthesis of nanodrugs, and further promote their practical applications for diagnostics and therapy of diseases.
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Affiliation(s)
- Xin Luan
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Hao Kong
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Peng He
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Guozheng Yang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Danzhu Zhu
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Lei Guo
- Institute of Biomedical Engineering, College of Life Science, Qingdao University, Qingdao, 266071, P. R. China
| | - Gang Wei
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
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Ji SL, Xiao SS, Wang LL. Construction of an ultra-small hydrazone-linked covalent organic polymer for selective fluorescent detection of ferric ion in aqueous solution. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 280:121541. [PMID: 35753102 DOI: 10.1016/j.saa.2022.121541] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 06/15/2022] [Accepted: 06/17/2022] [Indexed: 06/15/2023]
Abstract
A novel ultra-small hydrazone-linked covalent organic polymer (UHCOP) was synthesized based on the Schiff-base reaction between 2,4,6-trihydroxy-1,3,5-benzenetricarbaldehyde and 1,4-benzenedicarbohydrazide at room temperature and utilized as a sensitive fluorescent sensor for rapid (<2 min) and selective detection of Fe3+ in aqueous solution. The prepared UHCOP displayed ultra-small size with the diameter of 7.98 ± 0.97 nm and gave a stable fluorescent emission at 510 nm. UHCOP exhibited good sensitivity and highly selectivity towards Fe3+. The coordination interaction between UHCOP and Fe3+ resulted in the obviously aggregation-caused quenching response of UHCOP. The linear range was from 5.0 μM to 1.4 mM (R2 = 0.999) with the detection limit of 2.5 μM. Finally, UHCOP has been successfully applied in the detection of Fe3+ in real water samples, proving the fabricated UHCOP is promising as a sensitive fluorescent sensor for selective detection of Fe3+ in aqueous solution.
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Affiliation(s)
- Shi-Lei Ji
- Institute of BioPharmaceutical Research, Liaocheng University, Liaocheng 252059, China.
| | - Shan-Shan Xiao
- Institute of BioPharmaceutical Research, Liaocheng University, Liaocheng 252059, China
| | - Lu-Liang Wang
- School of Food Engineering, Ludong University, Yantai 264025, China
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Glutathione-capped gold nanoclusters as near-infrared-emitting efficient contrast agents for confocal fluorescence imaging of tissue-mimicking phantoms. Mikrochim Acta 2022; 189:337. [PMID: 35978146 DOI: 10.1007/s00604-022-05440-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 07/31/2022] [Indexed: 10/15/2022]
Abstract
An innovative research has been conducted focused on demonstrating the ability of novel dual-emissive glutathione-stabilized gold nanoclusters (GSH-AuNCs) to perform bright near-infrared (NIR)-emitting contrast agents inside tissue-mimicking agarose-phantoms via two complementary confocal fluorescence imaging techniques. First, using a new and fast microwave-assisted approach, we synthesized photostable dual-emitting GSH-AuNCs with an average size of 3.2 ± 0.4 nm and NIR emission quantum yield of 9.9%. Steady-state fluorescence measurements coupled with fluorescence lifetime imaging microscopy (FLIM) assays performed on lyophilized GSH-AuNCs revealed that the obtained GSH-AuNCs exhibit PL emissions at 610 nm (red PL) and, respectively, 800 nm (NIR PL) in both solution and powder solid-state. Time-resolved fluorescence measurements showed that the two PL components are characterized by average lifetimes of 407 ns (red PL) and 1821 ns (NIR PL), respectively. Additionally, due to a partial overlap between the red PL and the absorption of the NIR PL, an energy transfer between the two coexisting emissive centers was discovered and confirmed via steady-state and time-resolved fluorescence measurements. Furthermore, the FLIM analysis performed on powder GSH-AuNCs under 640 nm, an excitation more suitable for bioimaging applications, revealed a homogeneous and photostable NIR PL signal from GSH-AuNCs. Finally, the ability of GSH-AuNCs to operate as reliable NIR-emitting contrast agents inside tissue-mimicking agarose-phantoms was demonstrated here for the first time via complementary FLIM and re-scan confocal fluorescence imaging techniques. In consequence, GSH-AuNCs show great promise for future in vivo imaging applications via confocal fluorescence microscopy.
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12
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Borah N, Kalita AJ, Guha AK, Das MR, Tamuly C. Highly selective, rapid and simple colorimetric detection of Fe3+in fortified foods by L-Cysteine modified AuNP. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107480] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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13
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Saleh SM, El-Sayed WA, El-Manawaty MA, Gassoumi M, Ali R. Microwave-Assisted Rapid Synthesis of Luminescent Tryptophan-Stabilized Silver Nanoclusters for Ultra-Sensitive Detection of Fe(III), and Their Application in a Test Strip. BIOSENSORS 2022; 12:bios12060425. [PMID: 35735572 PMCID: PMC9220979 DOI: 10.3390/bios12060425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/14/2022] [Accepted: 06/15/2022] [Indexed: 11/16/2022]
Abstract
A new preparation method for extreme fluorescent green emission tryptophan-stabilized silver nanoclusters (Tryp-AgNCs) is presented in this scientific research. The produced silver nanoclusters are dependent on tryptophan amino acid which contributes to normal growth in infants and the sublimation and recovery of human protein, muscles, and enzymes. Herein, we have introduced a green method by using microwave-assisted rapid synthesis. The subsequent silver nanoclusters (AgNCs) have excitation/emission peaks at 408/498 nm and display a considerable selectivity to Fe(III) ions. The tryptophan amino acid molecule was used in the synthesis process as a reducing and stabilizing agent. The Tryp-AgNCs’ properties were investigated in terms of morphology, dispersity, and modification of the synthesized particles using different advanced instruments. The luminescent nanoclusters traced the Fe(III) ions by the luminescence-quenching mechanism of the Tryp-AgNCs luminescence. Therefore, the extreme selectivity of the prepared nanoclusters was exhibited to the Fe(III) ions, permitting the sensitive tracing of ferric ions in the lab and in the real environmental samples. The limit of detection for Fe(III) ions based on Tryp-AgNCs was calculated to be 16.99 nM. The Tryp-AgNCs can be efficiently applied to a paper test strip method. The synthesized nanoclusters were used efficiently to detect the Fe(III) ions in the environmental samples. Moreover, we examined the reactivity of Tryp-AgNCs on various human tumor cell lines. The results show that the Tryp-AgNCs exhibited their activity versus the cancer cells in a dose-dependent routine for the perceived performance versus the greatest-used cancer cell lines.
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Affiliation(s)
- Sayed M. Saleh
- Department of Chemistry, College of Science, Qassim University, Buraidah 51452, Saudi Arabia;
- Chemistry Branch, Department of Science and Mathematics, Faculty of Petroleum and Mining Engineering, Suez University, Suez 43721, Egypt
- Correspondence: (S.M.S.); (R.A.)
| | - Wael A. El-Sayed
- Department of Chemistry, College of Science, Qassim University, Buraidah 51452, Saudi Arabia;
- Photochemistry Department, National Research Centre, Dokki, Giza 12622, Egypt
| | - May A. El-Manawaty
- Pharmacognosy Department, Pharmaceutical and Drug Industries Research Institute, National Research Centre, 33 El Buhouth Street, Cairo 12622, Egypt;
| | - Malek Gassoumi
- Department of Physics, College of Science, Qassim University, Buraidah 51452, Saudi Arabia;
- Laboratory of Condensed Matter and Nanosciences, University of Monastir, Monastir 5000, Tunisia
| | - Reham Ali
- Department of Chemistry, College of Science, Qassim University, Buraidah 51452, Saudi Arabia;
- Chemistry Department, Science College, Suez University, Suez 43518, Egypt
- Correspondence: (S.M.S.); (R.A.)
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14
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Mohandoss S, Palanisamy S, You S, Lee YR. Synthesis of cyclodextrin functionalized photoluminescent metal nanoclusters for chemoselective Fe3+ ion detection in aqueous medium and its applications of paper sensors and cell imaging. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118999] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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15
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Zhao JG, Cao J, Wang WZ. Peptide-Based Electrochemical Biosensors and Their Applications in Disease Detection. JOURNAL OF ANALYSIS AND TESTING 2022. [DOI: 10.1007/s41664-022-00226-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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16
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BSA stabilized copper nanoclusters as a highly sensitive and selective probe for fluorescence sensing of Fe3+ ions. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2021.139226] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Borse S, Jha S, Murthy ZVP, Kailasa SK. Sustainable chemistry approach for the preparation of bluish green emissive copper nanoclusters from Justicia adhatoda leaves extract: a facile analytical approach for the sensing of myoglobin and l-thyroxine. NEW J CHEM 2022. [DOI: 10.1039/d2nj02524h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Sustainable chemistry approach for synthesis of fluorescent copper nanoclusters for sensing of myoglobin and l-thyroxine.
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Affiliation(s)
- Shraddha Borse
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat 395 007, India
| | - Sanjay Jha
- ASPEE Shakilam Biotechnology Institute, Navsari Agricultural University, Surat 39500, Gujarat, India
| | - Z. V. P. Murthy
- Department of Chemical Engineering, Sardar Vallabhbhai National Institute of Technology, Surat 395007, India
| | - Suresh Kumar Kailasa
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat 395 007, India
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18
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Zhang XY, Li Y, Wang YY, Liu XY, Jiang FL, Liu Y, Jiang P. Nitrogen and sulfur co-doped carbon dots with bright fluorescence for intracellular detection of iron ion and thiol. J Colloid Interface Sci 2021; 611:255-264. [PMID: 34953458 DOI: 10.1016/j.jcis.2021.12.069] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 11/28/2021] [Accepted: 12/11/2021] [Indexed: 12/19/2022]
Abstract
Carbon dots (CDs) have been widely used in recent years because of their excellent water solubility and abundant surface functional groups. However, compared with quantum dots or biological probes, the quantum yield of CDs is lower, and the fluorescence mainly concentrated in the blue-green range, which significantly limits the biological applications of CDs. Heteroatoms doping is the most common method to improve the luminescence of CDs. In this work, nitrogen and sulfur co-doped luminescent CDs were successfully synthesized by microwave assisted method using glutathione (GSH) and p-phenylenediamine (PPD) as raw materials. It can emit bright green fluorescence in ethanol solution, and the maximum emission wavelength is 535 nm when excited at 374 nm, and the absolute quantum yield is as high as 63%. Iron ion (Fe3+) can interact with the functional groups on the surface of the CDs to form CDs/Fe3+, which is a non-fluorescence complex, and Fe3+ can be reduced to ferrous ion (Fe2+). In other words, the reaction mechanism of CDs and Fe3+ is a combination of dynamic quenching and static quenching. The fluorescence of CDs quenched by Fe3+ can be restored by thiol, because there is a stronger binding force between sulfhydryl (-SH) on the surface of thiol and Fe3+, which enables CDs to be released. In addition, the CDs has good biocompatibility and stability, indicating that it has excellent potential in bioimaging. This discovery will expand the application of CDs in the fields of biosensing and imaging.
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Affiliation(s)
- Xiao-Yang Zhang
- Department of Chemistry, College of Chemistry and Molecular Sciences & Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), School of Pharmaceutical Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Yu Li
- Department of Chemistry, College of Chemistry and Molecular Sciences & Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), School of Pharmaceutical Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Yu-Ying Wang
- Department of Chemistry, College of Chemistry and Molecular Sciences & Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), School of Pharmaceutical Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Xing-Yu Liu
- Department of Chemistry, College of Chemistry and Molecular Sciences & Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), School of Pharmaceutical Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Feng-Lei Jiang
- Department of Chemistry, College of Chemistry and Molecular Sciences & Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), School of Pharmaceutical Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Yi Liu
- Department of Chemistry, College of Chemistry and Molecular Sciences & Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), School of Pharmaceutical Sciences, Wuhan University, Wuhan 430072, P. R. China; State Key Laboratory of Membrane Separation and Membrane Process, School of Chemistry and Chemical Engineering & School of Environmental Science and Engineering, Tiangong University, Tianjin 300387, P. R. China.
| | - Peng Jiang
- Department of Chemistry, College of Chemistry and Molecular Sciences & Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), School of Pharmaceutical Sciences, Wuhan University, Wuhan 430072, P. R. China.
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19
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Wang H, Zhou T, Li W, Wang Z, Liu Y, Wang F, Wang X, Zhang G, Zhang Z. Homocytosine-templated gold nanoclusters as a label-free fluorescent probe: Ferrous ions and glucose detection based on Fenton and enzyme-Fenton reaction. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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20
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Yao Y, Lu C, Gao L, Cao K, Yuan H, Zhang X, Gao X, Yuan Q. Gold Cluster Capped with a BCL-2 Antagonistic Peptide Exerts Synergistic Antitumor Activity in Chronic Lymphocytic Leukemia Cells. ACS APPLIED MATERIALS & INTERFACES 2021; 13:21108-21118. [PMID: 33942607 DOI: 10.1021/acsami.1c05550] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Chronic lymphocytic leukemia (CLL) is still incurable by conventional chemotherapy due to the resistance to apoptosis. We have previously found that a peptide-capped gold cluster (Au25Sv9) can target on the aberrant oxidative stress in CLL cells to specially inhibit thioredoxin reductase (TrxR) activity, resulting in significant apoptosis. However, the required doses of the gold cluster for inducing apoptosis are high, restricting its potential for further applications. Notably, the most recent studies suggested that CLL cells overexpressed antiapoptotic BCL-2 protein to prevent chemotherapy-induced apoptosis, indicating that BCL-2 could be a promising target for CLL therapy. Regrettably, the nonmitochondrial-targeted Au25Sv9 has little effect on BCL-2. In this study, we successfully screened a modified BADBH3 peptide (B1P) that could antagonize BCL-2 protein in CLL cells. We found that B1P could effectively sensitize MEC-1 cells to a subliminal dose of Au25Sv9. To simplify the treatment regimen, we directly fabricated a gold cluster capped with the B1P peptides by one-step synthesis to integrate the BCL-2 antagonistic activity into the gold the cluster, named BGC. We already found that low doses of BGC could significantly induce more apoptosis in MEC-1 cells than equivalent doses of the Au25Sv9 cluster or B1P peptide alone. Mechanistically, in addition to the inherent inhibitory effect of gold clusters on TrxR activity, BGC could bind to BCL-2 on mitochondria and activate the BCL-2 family-mediated mitochondrial apoptosis cascade more effectively. These results demonstrated that antagonizing the overexpressed BCL-2 in CLL cells, together with inhibiting TrxR simultaneously by a single gold cluster, is a promising strategy for the treatment of CLL cells. This study will provide a paradigm and reference for the development of functionalized gold clusters with rationally designed peptides, and opens up a new opportunity for the treatment of CLL in clinical settings.
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MESH Headings
- Amino Acid Sequence
- Antineoplastic Agents/chemistry
- Antineoplastic Agents/pharmacology
- Apoptosis/drug effects
- Cell Line, Tumor
- Cell Survival/drug effects
- Gold/chemistry
- Humans
- Leukemia, Lymphocytic, Chronic, B-Cell/enzymology
- Leukemia, Lymphocytic, Chronic, B-Cell/metabolism
- Leukemia, Lymphocytic, Chronic, B-Cell/pathology
- Mitochondria/drug effects
- Mitochondria/metabolism
- Peptides/chemistry
- Peptides/pharmacology
- Proto-Oncogene Proteins c-bcl-2/antagonists & inhibitors
- Proto-Oncogene Proteins c-bcl-2/chemistry
- Reactive Oxygen Species/metabolism
- Thioredoxin-Disulfide Reductase/antagonists & inhibitors
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Affiliation(s)
- Yawen Yao
- Department of Chemistry and Biology, Faculty of Environment and Life Science, Beijing University of Technology, Beijing 100124, China
- Center of Excellence for Environmental Safety and Biological Effects, Beijing University of Technology, Beijing 100124, China
| | - Cao Lu
- Department of Chemistry and Biology, Faculty of Environment and Life Science, Beijing University of Technology, Beijing 100124, China
- Center of Excellence for Environmental Safety and Biological Effects, Beijing University of Technology, Beijing 100124, China
| | - Liang Gao
- Department of Chemistry and Biology, Faculty of Environment and Life Science, Beijing University of Technology, Beijing 100124, China
- Center of Excellence for Environmental Safety and Biological Effects, Beijing University of Technology, Beijing 100124, China
| | - Kai Cao
- Department of Chemistry and Biology, Faculty of Environment and Life Science, Beijing University of Technology, Beijing 100124, China
- Center of Excellence for Environmental Safety and Biological Effects, Beijing University of Technology, Beijing 100124, China
| | - Hui Yuan
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Xiangchun Zhang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China
| | - Xueyun Gao
- Department of Chemistry and Biology, Faculty of Environment and Life Science, Beijing University of Technology, Beijing 100124, China
- Center of Excellence for Environmental Safety and Biological Effects, Beijing University of Technology, Beijing 100124, China
| | - Qing Yuan
- Department of Chemistry and Biology, Faculty of Environment and Life Science, Beijing University of Technology, Beijing 100124, China
- Center of Excellence for Environmental Safety and Biological Effects, Beijing University of Technology, Beijing 100124, China
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21
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Yan J, Lu Y, Xie S, Tan H, Tan W, Li N, Xu L, Xu J. Highly Fluorescent N-Doped Carbon Quantum Dots Derived from Bamboo Stems for Selective Detection of Fe 3+ Ions in Biological Systems. J Biomed Nanotechnol 2021; 17:312-321. [PMID: 33785101 DOI: 10.1166/jbn.2021.3034] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The establishment of sensing platform for trace analysis of Fe3+ in biological systems is meaningful for health monitoring. Herein, a Fe3+ sensitive fluorescent nanoprobe was constructed based on highly fluorescent N-doped carbon quantum dots (NCQDs) derived from bamboo stems through a hydrothermal method employing ethylenediamine as the nitrogen dopant. The prepared NCQDs had a uniformly distributed size and their mean size was around 2.43 nm. Abundant functional groups (C=N, N-H, C=O, and carboxyl) anchored on NCQDs demonstrated successful doping of N in CQDs. The obtained NCQDs possessed a high fluorescence quantum yield of 20.02% and outstanding fluorescence stability over a wide pH range and at high ionic strengths. Moreover, Fe3+ ions presented a specific fluorescent quenching effect to the as-prepared NCQDs. The calibration curve for fluorescence quenching degree corresponding to Fe3+ concentration showed a linear response in a range of 0.01-10 µM, and detection limit was 0.486 µM, which indicated that the NCQDs had high sensitivity to Fe3+ ions. Ascribed to these unique properties, the NCQDs were selected as luminescent probes for trace amount of Fe3+ ions in human serum. These results demonstrated their promising use in clinical diagnostics and other biologically relevant studies.
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Affiliation(s)
- Jiamin Yan
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, College of Life Sciences and Chemistry Hunan University of Technology Zhuzhou 412007, P. R. China
| | - Yuneng Lu
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, College of Life Sciences and Chemistry Hunan University of Technology Zhuzhou 412007, P. R. China
| | - Shaowen Xie
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, College of Life Sciences and Chemistry Hunan University of Technology Zhuzhou 412007, P. R. China
| | - Haihu Tan
- College of Packaging and Material Engineering, Hunan University of Technology, Zhuzhou, 412007, P. R. China
| | - Weilan Tan
- Department of Clinical Laboratory, Zhuzhou Maternal and Child Health Hospital, Zhuzhou, 412099, P. R. China
| | - Na Li
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, College of Life Sciences and Chemistry Hunan University of Technology Zhuzhou 412007, P. R. China
| | - Lijian Xu
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, College of Life Sciences and Chemistry Hunan University of Technology Zhuzhou 412007, P. R. China
| | - Jianxiong Xu
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, College of Life Sciences and Chemistry Hunan University of Technology Zhuzhou 412007, P. R. China
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22
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23
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Wang Y, Xia K, Wang L, Wu M, Sang X, Wan K, Zhang X, Liu X, Wei G. Peptide-Engineered Fluorescent Nanomaterials: Structure Design, Function Tailoring, and Biomedical Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2005578. [PMID: 33448113 DOI: 10.1002/smll.202005578] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 10/19/2020] [Indexed: 06/12/2023]
Abstract
Fluorescent nanomaterials have exhibited promising applications in biomedical and tissue engineering fields. To improve the properties and expand bioapplications of fluorescent nanomaterials, various functionalization and biomodification strategies have been utilized to engineer the structure and function of fluorescent nanomaterials. Due to their high biocompatibility, satisfied bioactivity, unique biomimetic function, easy structural tailoring, and controlled self-assembly ability, supramolecular peptides are widely used as versatile modification agents and nanoscale building blocks for engineering fluorescent nanomaterials. In this work, recent advance in the synthesis, structure, function, and biomedical applications of peptide-engineered fluorescent nanomaterials is presented. Firstly, the types of different fluorescent nanomaterials are introduced. Then, potential strategies for the preparation of peptide-engineered fluorescent nanomaterials via templated synthesis, bioinspired conjugation, and peptide assembly-assisted synthesis are discussed. After that, the unique structure and functions through the peptide conjugation with fluorescent nanomaterials are demonstrated. Finally, the biomedical applications of peptide-engineered fluorescent nanomaterials in bioimaging, disease diagnostics and therapy, drug delivery, tissue engineering, antimicrobial test, and biosensing are presented and discussed in detail. It is helpful for readers to understand the peptide-based conjugation and bioinspired synthesis of fluorescent nanomaterials, and to design and synthesize novel hybrid bionanomaterials with special structures and improved functions for advanced applications.
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Affiliation(s)
- Yan Wang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Kai Xia
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Luchen Wang
- College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, P. R. China
| | - Mingxue Wu
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Xiujie Sang
- Department of Food and Medicine, Weifang Vocational College, Weifang, 262737, P. R. China
| | - Keming Wan
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Xiaodong Zhang
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Xiaomin Liu
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Gang Wei
- College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, P. R. China
- Faculty of Production Engineering, University of Bremen, Bremen, 28359, Germany
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24
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Xiong Y, Shi C, Li L, Tang Y, Zhang X, Liao S, Zhang B, Sun C, Ren C. A review on recent advances in amino acid and peptide-based fluorescence and its potential applications. NEW J CHEM 2021. [DOI: 10.1039/d1nj02230j] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Fluorescence is widely used to detect functional groups and ions, and peptides are used in various fields due to their excellent biological activity.
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Affiliation(s)
- Yingshuo Xiong
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, China
| | - Changxin Shi
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, China
| | - Lingyi Li
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, China
| | - Yuanhan Tang
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, China
| | - Xin Zhang
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, China
| | - Sisi Liao
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, China
| | - Beibei Zhang
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, China
| | - Changmei Sun
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, China
| | - Chunguang Ren
- Yantai Institute of Materia Medica, Yantai 264000, China
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25
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Zhang X, Chen M, Zhang Y, Hou Y, Wu Y, Yao M, Li L, Shi L, Liu T, Hu B, Zhao H, Li X, Shi J, Jia B, Wang F. Monoclonal-Antibody-Templated Gold Nanoclusters for HER2 Receptors Targeted Fluorescence Imaging. ACS APPLIED BIO MATERIALS 2020; 3:7061-7066. [DOI: 10.1021/acsabm.0c00905] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xin Zhang
- Medical Isotopes Research Center and Department of Radiation Medicine, School of Basic Medical Sciences, Peking University, 38 Xueyuan Road, Haidian District, Beijing 100191, China
- Big Data and Engineering Research Center, Beijing Children’s Hospital, Capital Medical University, National Center for Children’s Health, No. 56 Nanlishi Road, Beijing 100045, China
| | - Muhua Chen
- Medical Isotopes Research Center and Department of Radiation Medicine, School of Basic Medical Sciences, Peking University, 38 Xueyuan Road, Haidian District, Beijing 100191, China
| | - Yunwei Zhang
- Medical Isotopes Research Center and Department of Radiation Medicine, School of Basic Medical Sciences, Peking University, 38 Xueyuan Road, Haidian District, Beijing 100191, China
| | - Yi Hou
- College of Life Science and Technology, Beijing University of Chemical Technology, North Third Ring Road 15, Chaoyang District, Beijing 100029, China
| | - Yue Wu
- Medical Isotopes Research Center and Department of Radiation Medicine, School of Basic Medical Sciences, Peking University, 38 Xueyuan Road, Haidian District, Beijing 100191, China
| | - Meinan Yao
- Medical Isotopes Research Center and Department of Radiation Medicine, School of Basic Medical Sciences, Peking University, 38 Xueyuan Road, Haidian District, Beijing 100191, China
| | - Liqiang Li
- Medical Isotopes Research Center and Department of Radiation Medicine, School of Basic Medical Sciences, Peking University, 38 Xueyuan Road, Haidian District, Beijing 100191, China
| | - Linqing Shi
- Medical Isotopes Research Center and Department of Radiation Medicine, School of Basic Medical Sciences, Peking University, 38 Xueyuan Road, Haidian District, Beijing 100191, China
| | - Tianyu Liu
- Medical Isotopes Research Center and Department of Radiation Medicine, School of Basic Medical Sciences, Peking University, 38 Xueyuan Road, Haidian District, Beijing 100191, China
| | - Biao Hu
- Medical Isotopes Research Center and Department of Radiation Medicine, School of Basic Medical Sciences, Peking University, 38 Xueyuan Road, Haidian District, Beijing 100191, China
| | - Huiyun Zhao
- Medical Isotopes Research Center and Department of Radiation Medicine, School of Basic Medical Sciences, Peking University, 38 Xueyuan Road, Haidian District, Beijing 100191, China
- Medical and Healthy Analytical Center, Peking University Health Science Center, 38 Xueyuan Road, Haidian District, Beijing 100191, China
| | - Xiaoda Li
- Medical Isotopes Research Center and Department of Radiation Medicine, School of Basic Medical Sciences, Peking University, 38 Xueyuan Road, Haidian District, Beijing 100191, China
- Medical and Healthy Analytical Center, Peking University Health Science Center, 38 Xueyuan Road, Haidian District, Beijing 100191, China
| | - Jiyun Shi
- Medical Isotopes Research Center and Department of Radiation Medicine, School of Basic Medical Sciences, Peking University, 38 Xueyuan Road, Haidian District, Beijing 100191, China
- Key Laboratory of Protein and Peptide Pharmaceuticals, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Road,
Chaoyang District, Beijing 100101, China
| | - Bing Jia
- Medical Isotopes Research Center and Department of Radiation Medicine, School of Basic Medical Sciences, Peking University, 38 Xueyuan Road, Haidian District, Beijing 100191, China
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, 38 Xueyuan Road, Haidian District, Beijing 100191, China
| | - Fan Wang
- Medical Isotopes Research Center and Department of Radiation Medicine, School of Basic Medical Sciences, Peking University, 38 Xueyuan Road, Haidian District, Beijing 100191, China
- Key Laboratory of Protein and Peptide Pharmaceuticals, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Road,
Chaoyang District, Beijing 100101, China
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26
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Halawa MI, Li BS, Xu G. Novel Synthesis of Thiolated Gold Nanoclusters Induced by Lanthanides for Ultrasensitive and Luminescent Detection of the Potential Anthrax Spores' Biomarker. ACS APPLIED MATERIALS & INTERFACES 2020; 12:32888-32897. [PMID: 32575980 DOI: 10.1021/acsami.0c10069] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
In this study, we reported a facile, one-pot, and "green" synthesis of glutathione-protected gold nanoclusters (GSH@AuNCs) initiated by samarium (Sm3+) lanthanides for the first time. Sm3+ lanthanides more efficiently induced the formation of GSH@AuNCs with significantly enhanced luminescence than other lanthanides or heavy metal ions (Cd2+, Pb2+) did. Using this strategy, a detection for Sm3+ was made with a linearity range of (10.0-100.0 μM) and a limit of detection (LOD) of 0.5 μM. The Sm3+-based GSH@AuNCs were characterized by eco-friendliness, photostability, and low-cost synthesis with low biological toxicity and had great potential in the application for biosensing and bioimaging. They were successfully employed in the detection of dipicolinic acid (DPA), a well-reported biomarker for sensing potential infection by strongly hazardous anthrax spores. A good linear response was obtained for DPA detection ranging from 1.0 to 120.0 μM with a low LOD of 0.1 μM, which was much lower (600 times) than the infectious dosage of anthrax spores (6 × 10-5 M). The detection was due to the strong binding affinity and strong chelation capability of DPA to Sm3+ lanthanides, which caused the dissociation of the aggregates with an obvious decrease or even a turning-off effect of their luminescence.
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Affiliation(s)
- Mohamed Ibrahim Halawa
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, University of Mansoura, Mansoura 35516, Egypt
- University of Science and Technology of China, Anhui 230026, China
| | - Bing Shi Li
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
| | - Guobao Xu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
- University of Science and Technology of China, Anhui 230026, China
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27
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Desai ML, Jha S, Basu H, Saha S, Singhal RK, Kailasa SK. Simple hydrothermal approach for synthesis of fluorescent molybdenum disulfide quantum dots: Sensing of Cr 3+ ion and cellular imaging. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 111:110778. [PMID: 32279756 DOI: 10.1016/j.msec.2020.110778] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 01/15/2020] [Accepted: 02/25/2020] [Indexed: 11/26/2022]
Abstract
Nowadays, fluorescent molybdenum disulfide quantum dots (MoS2 QDs) have proven to be potential candidates in the sensing and bioimaging areas owing to their exceptional intrinsic characteristics. Here, a simple hydrothermal strategy was explored for the preparation of MoS2 QDs using ammonium heptamolybdate and 6-mercaptopurine (6-MP) as precursors. The emission peak of MoS2 QDs was significantly quenched in the presence Cr3+ ion due to the selective surface chemistry on the surfaces of MoS2 QDs. The designed fluorescent MoS2 QDs showed a linear fluorescence quenching response with increasing concentration of Cr3+ ion (0.1-10 μM), allowing to detect Cr3+ ion even at 0.08 μM. This fluorescent MoS2 QDs were utilized for the quantification of Cr3+ ion in real samples (water and biological samples). Interestingly, the synthesized MoS2 QDs exhibited negligible cytotoxicity on NRK cells and acted as good candidates for imaging of Trichoderma viride fungal cells.
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Affiliation(s)
- Mittal L Desai
- Applied Chemistry Department, S. V. National Institute of Technology, Surat 395 007, India
| | - Sanjay Jha
- Gujarat Agricultural Biotechnology Institute, Navsari Agricultural University, Surat 395007, India
| | - Hirakendu Basu
- Analytical Chemistry Division, Bhabha Atomic Research Center, Trombay, Mumbai 400085, India
| | - Sudeshna Saha
- Analytical Chemistry Division, Bhabha Atomic Research Center, Trombay, Mumbai 400085, India
| | - Rakesh Kumar Singhal
- Analytical Chemistry Division, Bhabha Atomic Research Center, Trombay, Mumbai 400085, India
| | - Suresh Kumar Kailasa
- Applied Chemistry Department, S. V. National Institute of Technology, Surat 395 007, India.
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28
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Wang Y, Man Y, Li S, Wu S, Zhao X, Xie F, Qu Q, Zou WS. Pesticide-derived bright chlorine-doped carbon dots for selective determination and intracellular imaging of Fe(III). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 226:117594. [PMID: 31629278 DOI: 10.1016/j.saa.2019.117594] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 09/06/2019] [Accepted: 10/02/2019] [Indexed: 05/20/2023]
Abstract
Inspired by the conversion from organics or biomass to fluorescent carbon dots (C-dots), the use of pesticide 4-chlorophenol (4-CP) as a precursor to prepare C-dots has been reported. The as-prepared chlorine-doped C-dots display a brightly blue emission at ∼445 nm with ∼22.8% quantum yield. Also, the surface of C-dots enriches functional groups, such as phenolic hydroxyl and carboxylic acid, etc., which can capture ferric ion (Fe(III)), resulting in the quenching of blue fluorescence of C-dots through an inner filter effect. The quantitative assay for Fe(III) was therefore realized by this probe with a 0.36 μM detection limit in the 0.6-25 μM concentration range. Most significantly, the cytotoxicity on Hela cells indicates the 4-CP-derived C-dots have a negligible cytotoxicity. The C-dots were applied in detection in environmental samples and imaging in Hela cells of Fe(III), demonstrating their good applicability, low toxicity and good biocompatibility, and providing an alterative approach to totally eliminate the harm of chlorophenols (CPs).
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Affiliation(s)
- Yaqin Wang
- School of Materials and Chemical Engineering, Anhui Jianzhu University, 292 Ziyun Road, Hefei, Anhui, 230022, China
| | - Yun Man
- School of Food and Biological Engineering, Bengbu University, 1866 Caoshan Road, Bengbu, Anhui, 233030, China.
| | - Sisheng Li
- Hefei Center for Disease Control and Prevention, 218 North Susong Road, Hefei, Anhui, 230061, China
| | - Shibiao Wu
- School of Materials and Chemical Engineering, Anhui Jianzhu University, 292 Ziyun Road, Hefei, Anhui, 230022, China
| | - Xiaoli Zhao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
| | - Fazhi Xie
- School of Materials and Chemical Engineering, Anhui Jianzhu University, 292 Ziyun Road, Hefei, Anhui, 230022, China
| | - Qishu Qu
- School of Materials and Chemical Engineering, Anhui Jianzhu University, 292 Ziyun Road, Hefei, Anhui, 230022, China
| | - Wen-Sheng Zou
- School of Materials and Chemical Engineering, Anhui Jianzhu University, 292 Ziyun Road, Hefei, Anhui, 230022, China.
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Fu Z, He J, Jia F, Wang M, Cui F. Utilizing the interfacial reaction of naphthalenyl thiosemicarbazide-modified carbon dots for the ultrasensitive determination of Fe (III) ions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 225:117485. [PMID: 31494383 DOI: 10.1016/j.saa.2019.117485] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Revised: 08/12/2019] [Accepted: 08/24/2019] [Indexed: 06/10/2023]
Abstract
Since thiosemicarbazide contains numerous nitrogen and sulfur atoms in its structural formula that enhance its strong coordinating abilities with metal ions, it is always selected as the mother molecule for the design of metal-ion sensors. In this report, a thiosemicarbazide derivative (4-naphthalenyl-3-thiosemicarbazide (NTSC)) was synthesized via a single step process and covalently conjugated onto the surfaces of carbon dots (CDs). The modified CDs demonstrated excellent monodispersity, good photostability, and tunable luminescence properties. More importantly, the CDs retained a highly specific Fe3+ recognition capacity in contrast to other competing metal ions. Fe3+ can efficiently quench the fluorescence of CDs even at fairly low concentration (30μM) with a detection limit as low as 1.68nM. The fluorescence quenching kinetics are likely to involve static quenching, which is caused by specific interactions between NTSC-CDs and Fe3+ toward the formation of a ground state complex. Due to their excellent optical performance, low toxicity, and good biocompatibility the NTSC-CDs may be applied to the imaging and monitoring of Fe3+ in bacillus subtilis. In effect we successfully fabricated an effective fluorescent nanosensor for both the quantitative detection of Fe3+ in aqueous solutions, and its real-time imaging in vivo.
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Affiliation(s)
- Zheng Fu
- College of Material Science and Engineering, Henan Institute of Technology, Henan, Xinxiang 453000, PR China; College of Chemistry and Chemical Engineering, Henan Normal University, Henan, Xinxiang 453007, PR China.
| | - Jiantong He
- Clinical Laboratory, Xinxiang Maternal and Child Health Hospital, Henan, Xinxiang 453003, PR China
| | - Fengchun Jia
- College of Material Science and Engineering, Henan Institute of Technology, Henan, Xinxiang 453000, PR China
| | - Mengjiao Wang
- Department of Chemistry, Fudan University, Shanghai 200433, PR China
| | - Fengling Cui
- College of Chemistry and Chemical Engineering, Henan Normal University, Henan, Xinxiang 453007, PR China.
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Wang S, Yang B, Zhang Z, Xu X, Li H, Cheng G, Yang Z, Du H, Yang Y, Yang X. Au nanoclusters/porous silica particles nanocomposites as fluorescence enhanced sensors for sensing and mapping of copper(II) in cells. NANOTECHNOLOGY 2019; 30:475701. [PMID: 31430734 DOI: 10.1088/1361-6528/ab3d1c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this work, we first report Au nanoclusters/porous silica particles nanocomposites as fluorescence enhanced sensors for selective and sensitive detection of Cu (II). As red-emitting GSH-protected Au nanoclusters (Au NCs) were self-assemble into porous silica particles (PSPs) after ultrasonic treatment. As a result, the Au NCs can be immobilized in the nano-channels of PSPs, which leads to the observation of an immobilized induced emission enhancement phenomenon. The photoluminscence (PL) intensity of the nanocomposites can enhance dozens of times compared with Au NCs. As a result, we obtain a novel PL enhanced sensor of Au NCs/PSPs nanocomposites with excellent PL properties. The as-prepared Au NCs/PSPs nanocomposites show good water-solubility, high stability, low toxicity, and exhibit a high PL quenching for reliable, sensitive and selective detection of Cu2+. The limit of detection can reach as low as 1 ppb. What is more, the Au NCs/PSPs nanocomposites also show sensitive detection of Cu2+ in living cells. These properties provide the Au NCs/PSPs nanocomposites with promising PL sensors for Cu2+ detection in various environmental and biological systems.
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Affiliation(s)
- Shengxu Wang
- School of Chemical Engineering, Advanced Institute of Materials Science, Changchun University of Technology, Changchun, 130012, People's Republic of China
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31
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Multifunctional iron-based Metal−Organic framework as biodegradable nanozyme for microwave enhancing dynamic therapy. Biomaterials 2019; 214:119223. [DOI: 10.1016/j.biomaterials.2019.119223] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 05/01/2019] [Accepted: 05/21/2019] [Indexed: 02/06/2023]
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32
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Li J, Tang K, Yu J, Wang H, Tu M, Wang X. Nitrogen and chlorine co-doped carbon dots as probe for sensing and imaging in biological samples. ROYAL SOCIETY OPEN SCIENCE 2019; 6:181557. [PMID: 30800391 PMCID: PMC6366224 DOI: 10.1098/rsos.181557] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 11/27/2018] [Indexed: 05/20/2023]
Abstract
A facile one-step hydrothermal synthesis approach was proposed to prepare nitrogen and chlorine co-doped carbon dots (CDs) using l-ornithine hydrochloride as the sole precursor. The configuration and component of CDs were characterized by transmission electron microscopy and X-ray photoelectron and Fourier transform infrared spectroscopies. The obtained CDs (Orn-CDs) with a mean diameter of 2.1 nm were well monodispersed in aqueous solutions. The as-prepared CDs exhibited a bright blue fluorescence with a high yield of 60%, good photostability and low cytotoxicity. The emission of Orn-CDs could be selectively and effectively suppressed by Fe3+. Thus, a quantitative assay of Fe3+ was realized by this nanoprobe with a detection limit of 95.6 nmol l-1 in the range of 0.3-50 µmol l-1. Furthermore, ascorbic acid could recover the fluorescence of Orn-CDs suppressed by Fe3+, owing to the transformation of Fe3+ to Fe2+ by ascorbic acid. The limit of detection for ascorbic acid was 137 nmol l-1 in the range of 0.5-10 µmol l-1. In addition, the established method was successfully applied for Fe3+ and ascorbic acid sensing in human serum and urine specimens and for imaging of Fe3+ in living cells. Orn-CD-based sensing platform showed its potential to be used for biomedicine-related study because it is cost-effective, easily scalable and can be used without additional functionalization and sample pre-treatment.
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Affiliation(s)
- Jin Li
- Department of Reproductive Medicine, Suizhou Hospital, Hubei University of Medicine, 60 Longmen Street, Suizhou 441300, People's Republic of China
| | - Kai Tang
- Center for Translational Medicine, Suizhou Hospital, Hubei University of Medicine, 8 East Culture Park Road, Suizhou 441300, People's Republic of China
| | - Jianxin Yu
- Center for Translational Medicine, Suizhou Hospital, Hubei University of Medicine, 8 East Culture Park Road, Suizhou 441300, People's Republic of China
| | - Hanqin Wang
- Center for Translational Medicine, Suizhou Hospital, Hubei University of Medicine, 8 East Culture Park Road, Suizhou 441300, People's Republic of China
| | - Mingli Tu
- Center for Translational Medicine, Suizhou Hospital, Hubei University of Medicine, 8 East Culture Park Road, Suizhou 441300, People's Republic of China
| | - Xiaobo Wang
- Department of Reproductive Medicine, Suizhou Hospital, Hubei University of Medicine, 60 Longmen Street, Suizhou 441300, People's Republic of China
- Center for Translational Medicine, Suizhou Hospital, Hubei University of Medicine, 8 East Culture Park Road, Suizhou 441300, People's Republic of China
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Jia Y, Sun T, Jiang Y, Sun W, Zhao Y, Xin J, Hou Y, Yang W. Green, fast, and large-scale synthesis of highly fluorescent Au nanoclusters for Cu 2+ detection and temperature sensing. Analyst 2018; 143:5145-5150. [PMID: 30246811 DOI: 10.1039/c8an01617h] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Gold nanoclusters have attracted widespread attention because of their unique optical and physical properties. However, traditional synthesis methods are complicated and require additional reducing agents, while the yield is often very low. Such resource and time-consuming synthesis processes limit their further application. Herein, a rapid sonochemical route is used to synthesize fluorescent Au nanoclusters in large quantities using glutathione (GSH) both as a capping and reducing agent. These Au nanoclusters are synthesized quickly (∼40 min) due to the presence of ultrasonic waves, and show orange red photoluminescence (Em = 598 nm), small size (∼2 nm) and good dispersion in aqueous solution. Moreover, GSH, as a protecting agent on the surface of resultant Au nanoclusters, has many functional groups including carboxyl and amino groups because of which the nanoclusters show high photo-, storage-, metal- and pH-stability. A stable Au nanoclusters-based nano-sensor is designed for highly sensitive and selective label-free detection of Cu2+ with a low limit of detection of 7 ppb (based on S/N = 3). The fluorescent probe can be used in versatile nanothermometry devices, because their photoluminescence intensity correlates strongly with temperature and varies considerably over a wide temperature range (20-80 °C). Therefore, the novel fluorescent sensing probe has great application prospects in Cu2+ detection and temperature sensing.
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Affiliation(s)
- Yunxiao Jia
- College of Chemistry, Jilin University, Changchun 130012, China.
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Determination of ferric ion via its effect on the enhancement of the chemiluminescece of the permanganate-sulfite system by nitrogen-doped graphene quantum dots. Mikrochim Acta 2018; 185:431. [PMID: 30155793 DOI: 10.1007/s00604-018-2943-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Accepted: 08/02/2018] [Indexed: 10/28/2022]
Abstract
Nitrogen-doped graphene quantum dots (NGQDs) are shown to strongly enhance the integrated chemiluminescence (CL) of the permanganate-sulfite system. The mechanism of enhancement was investigated, and the catalytic effect of the NGQDs was proven. In contrast to other carbon-based nanomaterials, the enhancement by NGQDs is independent of particle size and surface. However, the pyridinic nitrogen on the surface of the NGQDs facilitates the transformation of dissolved oxygen into H2O2 and the generation of hydroxyl radicals. This induces the increase of CL intensity. However, in the presence of Fe3+, the nitrogen functions and phenol groups on the surface of the NGQDs will chelate it, and the CL signal is decreased as a result. This effect was used to design an assay for Fe3+ that has a wide response range (1 × 10-8 - 1 × 10-6 M) and a 4 nM detection limit. The method was successfully applied to the determination of Fe3+ in spiked real water samples. Graphical abstract Nitrogen-doped graphene quantum dots (NGQDs) are demonstrated to strongly enhance the integrated chemiluminescence (CL) of the permanganate-sulfite system. The pyridinic N-atoms in NGQDs facilitate the transformation from dissolved oxygen into H2O2 and the generation of •OH radicals. This leads to the highly enhanced CL of the system. In the presence of Fe3+, which will be chelated by the nitrogen functions and phenol groups on the surface of the NGQDs, the CL signal is decreased.
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35
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Day PN, Pachter R, Nguyen KA. Theoretical Analysis of Optical Absorption and Emission in Mixed Noble Metal Nanoclusters. J Phys Chem A 2018; 122:4058-4066. [PMID: 29641901 DOI: 10.1021/acs.jpca.8b01882] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this work, we studied theoretically two hybrid gold-silver clusters, which were reported to have dual-band emission, using density functional theory (DFT) and linear and quadratic response time-dependent DFT (TDDFT). Hybrid functionals were found to successfully predict absorption and emission, although explanation of the NIR emission from the larger cluster (cluster 1) requires significant vibrational excitation in the final state. For the smaller cluster (cluster 2), the Δ H(0-0) value calculated for the T1 → S0 transition, using the PBE0 functional, is in good agreement with the measured NIR emission, and the calculated T2 → S0 value is in fair agreement with the measured visible emission. The calculated T1 → S0 phosphorescence Δ H(0-0) for cluster 1 is close to the measured visible emission energy. In order for the calculated phosphorescence for cluster 1 to agree with the intense NIR emission reported experimentally, the vibrational energy of the final state (S0) is required to be about 0.7 eV greater than the zero-point vibrational energy.
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Affiliation(s)
- Paul N Day
- Materials and Manufacturing Directorate , Air Force Research Laboratory , Wright-Patterson Air Force Base , Ohio 45433 , United States.,UES, Inc. Dayton Ohio 45432 , United States
| | - Ruth Pachter
- Materials and Manufacturing Directorate , Air Force Research Laboratory , Wright-Patterson Air Force Base , Ohio 45433 , United States
| | - Kiet A Nguyen
- Materials and Manufacturing Directorate , Air Force Research Laboratory , Wright-Patterson Air Force Base , Ohio 45433 , United States.,UES, Inc. Dayton Ohio 45432 , United States
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36
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Yuan L, Niu Y, Li R, Zheng L, Wang Y, Liu M, Xu G, Huang L, Xu Y. Molybdenum oxide quantum dots prepared via a one-step stirring strategy and their application as fluorescent probes for pyrophosphate sensing and efficient antibacterial materials. J Mater Chem B 2018; 6:3240-3245. [DOI: 10.1039/c8tb00475g] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
MoOx QDs were prepared using a one-step stirring treatment of MoO3 powder in DMSO. They can be used as efficient fluorescent probes and antibacterial materials.
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Affiliation(s)
- Lili Yuan
- College of Life Sciences
- Qingdao University
- Qingdao 266071
- China
| | - Yusheng Niu
- College of Life Sciences
- Qingdao University
- Qingdao 266071
- China
| | - Ronggui Li
- College of Life Sciences
- Qingdao University
- Qingdao 266071
- China
| | - Lanhong Zheng
- Yellow Sea Fisheries Research Institute
- Chinese Academy of Fishery Sciences
- Qingdao 266071
- China
| | - Yao Wang
- College of Life Sciences
- Qingdao University
- Qingdao 266071
- China
| | - Mengli Liu
- College of Life Sciences
- Qingdao University
- Qingdao 266071
- China
| | - Gengfang Xu
- College of Life Sciences
- Qingdao University
- Qingdao 266071
- China
| | - Lei Huang
- College of Life Sciences
- Qingdao University
- Qingdao 266071
- China
| | - Yuanhong Xu
- College of Life Sciences
- Qingdao University
- Qingdao 266071
- China
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