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Zhang J, Yu Q, Chen W. Advancements in Small Molecule Fluorescent Probes for Superoxide Anion Detection: A Review. J Fluoresc 2024:10.1007/s10895-024-03727-4. [PMID: 38656646 DOI: 10.1007/s10895-024-03727-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Accepted: 04/11/2024] [Indexed: 04/26/2024]
Abstract
Superoxide anion (O2•-), a significant reactive oxygen species (ROS) within biological systems, plays a widespread role in cellular function regulation and is closely linked to the onset and progression of numerous diseases. To unveil the pathological implications of O2•- in these diseases, the development of effective monitoring techniques within biological systems is imperative. Small molecule fluorescent probes have garnered considerable attention due to their advantages: simplicity in operation, heightened sensitivity, exceptional selectivity, and direct applicability in monitoring living cells, tissues, and animals. In the past few years, few reports have focused on small molecule fluorescence probes for the detection of O2•-. In this small review, we systematically summarize the design and application of O2•- responsive small molecule fluorescent probes. In addition, we present the limitations of the current detection of O2•- and suggest the construction of new fluorescent imaging probes to indicate O2•- in living cells and in vivo.
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Affiliation(s)
- Jiao Zhang
- School of Pharmacy and Bioengineering, Chongqing University of Technology, No. 69, Hongguang Avenue, Banan District, Chongqing, 400054, China
| | - Qinghua Yu
- Department of Pharmacy, Chongqing University Cancer Hospital, NO.181 Hanyu Road, Shapingba District, Chongqing, 400030, P. R. China
| | - Wanyi Chen
- Department of Pharmacy, Chongqing University Cancer Hospital, NO.181 Hanyu Road, Shapingba District, Chongqing, 400030, P. R. China.
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2
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Liu Z, Shi Y, Li C, Hu W, Yao Z. Ratiometric detection of polymyxin B based on the disaggregation of pyrenyl nanoassemblies in 100% aqueous media. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 284:121781. [PMID: 36063737 DOI: 10.1016/j.saa.2022.121781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 08/19/2022] [Accepted: 08/21/2022] [Indexed: 06/15/2023]
Abstract
Polymyxin B (PMB) was an antibiotic with highly effective antibacterial effect but narrow safety interval, and its residues in food had attracted widespread attention. It was important to develop an accurate method for the rapid detection of PMB in animal foods. In this work, we had established a ratiometric sensing system based on the formation of supramolecular assemblies of pyrenyl probes, which were driven by the synergy of noncovalent forces such as multiple-electrostatic and π-π stacking interactions. Compared with the traditional fluorescence detection based on the single wavelength change, the present approach showing two-wavelength fluorescence response could reduce the interference of other factors making the experimental results more accurate. The sensor exhibited high sensitivity and selectivity with a low detection limit (28.3 nM). This method could be used to realize visual detection and had a visual detection limit of 1 μM. As we had learned yet, this was the first ratiometric sensor for PMB detection in aqueous solution. We believed all our preliminary would not only provide a complementary strategy for the detection of PMB, but also develop some new ideas for the construction of sensors for rapid antibiotic detection.
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Affiliation(s)
- Zhen Liu
- Beijing Laboratory of Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Yijie Shi
- Department of Chemistry and Biology, Faculty of Environment and Life Science, Beijing University of Technology, Beijing 100124, China
| | - Chen Li
- Beijing Laboratory of Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Wentong Hu
- Beijing Laboratory of Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Zhiyi Yao
- Beijing Laboratory of Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China.
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3
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Ran F, Xu Y, Ma M, Liu X, Zhang H. Flower-like ZIF-8 enhance the peroxidase-like activity of nanoenzymes at neutral pH for detection of heparin and protamine. Talanta 2022; 250:123702. [PMID: 35780694 DOI: 10.1016/j.talanta.2022.123702] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 06/13/2022] [Accepted: 06/15/2022] [Indexed: 12/01/2022]
Abstract
The peroxide-like catalytic activity of gold nanoclusters (Au-NCs) is very low under physiological conditions (pH 7.4), which greatly limits its biological detection applications. A new nanoenzyme platform was constructed by self-assembly of Au-NCs and ZIF-8/CQDs. It was found that heparin can significantly promote the peroxidase-like activity of Au-NCs on the nanoenzyme platform at pH 7.4. In the presence of H2O2, the catalytic activity of Au-NCs on the nanoenzyme platform for TMB increased nearly 50 times. Based on this phenomenon, a colorimetric method was developed to determine heparin in the range of 0.0185-9.25 U/mL, with a detection limit of 0.0027 U/mL. When protamine is introduced, heparin and protamine take the lead in specific binding due to antagonism, which makes heparin unable to adsorb on the surface of ZIF-8/CQDS, thus inhibiting the enhancement of the catalytic activity of Au-NCs. Based on this phenomenon, a colorimetric method was developed to determine protamine in the range of 0.01-0.5 μg/mL, with a detection limit of 0.003 μg/mL. Therefore, this method provides a new idea for the visual detection of heparin and protamine under physiological conditions.
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Affiliation(s)
- Fanpeng Ran
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Yixuan Xu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Minrui Ma
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Xiaoyan Liu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Haixia Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China.
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4
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Liu M, Cao J, Huang C, Zhang M, Li Y, Wang C. A novel near-infrared fluorescent probe based on triphenylamine derivatives for the rapid and sensitive detection of heparin. Analyst 2022; 147:3504-3513. [DOI: 10.1039/d2an00254j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, a positively charged near-infrared fluorescent probe (TPA-P+) was constructed by connecting a pyridine cation with triphenylamine and successfully used for the detection of heparin.
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Affiliation(s)
- Mingming Liu
- School of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, 201600, P. R. China
| | - Jian Cao
- School of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, 201600, P. R. China
| | - Cuiping Huang
- School of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, 201600, P. R. China
| | - Meijuan Zhang
- School of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, 201600, P. R. China
| | - Yanan Li
- School of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, 201600, P. R. China
| | - Chuanxiao Wang
- School of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, 201600, P. R. China
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Kushnazarova RA, Mirgorodskaya AB, Kuznetsov DM, Tyryshkina AA, Voloshina AD, Gumerova SK, Lenina OA, Nikitin EN, Zakharova LY. Modulation of aggregation behavior, antimicrobial properties and catalytic activity of piperidinium surfactants by modifying their head group with a polar fragment. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116318] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Fan L, Jia D, Zhang W, Ding Y. Chemical sensors for selective and quantitative heparin sensing. Analyst 2020; 145:7809-7824. [DOI: 10.1039/d0an01562h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In this review article, chemical sensors for selective and quantitative heparin sensing are discussed with detailed examples.
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Affiliation(s)
- Liangfei Fan
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Dongmin Jia
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Weihua Zhang
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Yubin Ding
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
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Ma C, Chen M, He H, Chen L. Detection of coralyne and heparin by polymerase extension reaction using SYBR Green I. Mol Cell Probes 2019; 46:101423. [PMID: 31323319 DOI: 10.1016/j.mcp.2019.101423] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 07/14/2019] [Accepted: 07/16/2019] [Indexed: 11/24/2022]
Abstract
Polydeoxyadenosine (poly (dA)) has been extensively applied for detecting many drug molecules. Herein, we developed a sensitive method for detecting coralyne and heparin using a modified DNA probe with poly (dA) at one end. In the absence of coralyne, the DNA probe was digested by the Exonuclease I (Exo I), and therefore the SYBR Green I (SG I) emitted an extremely low fluorescent signal. While coralyne specifically binding to poly (dA) with strong propensity could remarkably restrain the disintegration of the DNA probe, through which as a template the second strand of DNA sequence was formed with the introduction of DNA polymerase. Therefore, the fluorescent signal of SG I was intensified to quantify coralyne. Based on this method, heparin can be determined due to its strong affinity towards coralyne. This method showed a linear range from 2 to 500 nM for coralyne with a low detection limit of 0.98 nM, and the linear range of heparin was from 1 to 100 nM when 1.25 nm was the detection limit. The proposed method was also implemented successfully in biological samples and showed a potential application for screening potential therapeutic molecules.
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Affiliation(s)
- Changbei Ma
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing, 102488, China; School of Life Sciences, Central South University, Changsha, 410013, China.
| | - Miangjian Chen
- School of Life Sciences, Central South University, Changsha, 410013, China
| | - Hailun He
- School of Life Sciences, Central South University, Changsha, 410013, China
| | - Leilei Chen
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing, 102488, China.
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Zhu X, Chen M, Ma C. Sensitive Detection of Coralyne and Heparin Using a Singly Labeled Fluorescent Oligonucleotide Probe. ChemistrySelect 2019. [DOI: 10.1002/slct.201900942] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Xingxing Zhu
- School of Life SciencesCentral South University Changsha 410013 China
| | - Miangjian Chen
- School of Life SciencesCentral South University Changsha 410013 China
| | - Changbei Ma
- School of Life SciencesCentral South University Changsha 410013 China
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Heard KW, Bartlam C, Williams CD, Zhang J, Alwattar AA, Little MS, Parry AVS, Porter FM, Vincent MA, Hillier IH, Siperstein FR, Vijayaraghavan A, Yeates SG, Quayle P. Initial Studies Directed toward the Rational Design of Aqueous Graphene Dispersants. ACS OMEGA 2019; 4:1969-1981. [PMID: 31459448 PMCID: PMC6648898 DOI: 10.1021/acsomega.8b03147] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Accepted: 12/14/2018] [Indexed: 05/31/2023]
Abstract
This study presents preliminary experimental data suggesting that sodium 4-(pyrene-1-yl)butane-1-sulfonate (PBSA), 5, an analogue of sodium pyrene-1-sulfonate (PSA), 1, enhances the stability of aqueous reduced graphene oxide (RGO) graphene dispersions. We find that RGO and exfoliated graphene dispersions prepared in the presence of 5 are approximately double the concentration of those made with commercially available PSA, 1. Quantum mechanical and molecular dynamics simulations provide key insights into the behavior of these molecules on the graphene surface. The seemingly obvious introduction of a polar sulfonate head group linked via an appropriate alkyl spacer to the aromatic core results in both more efficient binding of 5 to the graphene surface and more efficient solvation of the polar head group by bulk solvent (water). Overall, this improves the stabilization of the graphene flakes by disfavoring dissociation of the stabilizer from the graphene surface and inhibiting reaggregation by electrostatic and steric repulsion. These insights are currently the subject of further investigations in an attempt to develop a rational approach to the design of more effective dispersing agents for rGO and graphene in aqueous solution.
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Affiliation(s)
- Kane W.
J. Heard
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Cian Bartlam
- School
of Materials and National Graphene Institute, The University of Manchester, Manchester M13 9PL, U.K.
| | - Christopher D. Williams
- School
of Chemical Engineering and Analytical Science, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Junru Zhang
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Aula A. Alwattar
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
- College
of Science, University of Basrah, Garmat Ali, 61004 Basrah, Iraq
| | - Mark S. Little
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Adam V. S. Parry
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Fiona M. Porter
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Mark A. Vincent
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Ian H. Hillier
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Flor R. Siperstein
- School
of Chemical Engineering and Analytical Science, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Aravind Vijayaraghavan
- School
of Materials and National Graphene Institute, The University of Manchester, Manchester M13 9PL, U.K.
| | - Stephen G. Yeates
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Peter Quayle
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
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Mirgorodskaya AB, Kushnazarova RA, Lukashenko SS, Voloshina AD, Lenina OA, Zakharova LY, Sinyashin OG. Carbamate-bearing surfactants: Micellization, solubilization, and biological activity. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.08.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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12
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Zuo M, Qian W, Xu Z, Shao W, Hu XY, Zhang D, Jiang J, Sun X, Wang L. Multiresponsive Supramolecular Theranostic Nanoplatform Based on Pillar[5]arene and Diphenylboronic Acid Derivatives for Integrated Glucose Sensing and Insulin Delivery. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1801942. [PMID: 30073791 DOI: 10.1002/smll.201801942] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 07/12/2018] [Indexed: 05/20/2023]
Abstract
A closed-loop "smart" insulin delivery system with the capability to mimic pancreatic cells will be highly desirable for diabetes treatment. This study reports a multiple stimuli-responsive insulin delivery platform based on an explicit supramolecular strategy. Self-assembled from a well-designed amphiphilic host-guest complex formed by pillar[5]arene and a diphenylboronic acid derivative and loaded with insulin and glucose oxidase, the obtained insulin-GOx-loaded supramolecular vesicles can selectively recognize glucose, accompanied by the structure disruption and efficient release of the entrapped insulin triggered by the high glucose concentration as well as the in situ generated H2 O2 and acid microenvironment during the GOx-promoted specific oxidation of glucose into gluconic acid. Moreover, such a "smart" supramolecular theranostic nanoplatform is able to function as both a glucose sensor and a controlled insulin delivery actuator. In vivo experiments further demonstrate that this smart supramolecular nanocarrier shows fast response to hyperglycemic circumstances and can effectively regulate the glucose levels in a mouse model of type I diabetes.
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Affiliation(s)
- Minzan Zuo
- Key Laboratory of Mesoscopic Chemistry of MOE and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Weirui Qian
- Key Laboratory of Mesoscopic Chemistry of MOE and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Zuqiang Xu
- Key Laboratory of Mesoscopic Chemistry of MOE and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Wei Shao
- Key Laboratory of Mesoscopic Chemistry of MOE and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Xiao-Yu Hu
- Key Laboratory of Mesoscopic Chemistry of MOE and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
- Applied Chemistry Department, School of Material Science & Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing, 210016, China
| | - Dongmei Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Science, Nanjing University, Nanjing, 210023, China
| | - Juli Jiang
- Key Laboratory of Mesoscopic Chemistry of MOE and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Xiaoqiang Sun
- School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, China
| | - Leyong Wang
- Key Laboratory of Mesoscopic Chemistry of MOE and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
- School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, China
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Fu HR, Wu XX, Ma LF, Wang F, Zhang J. Dual-Emission SG7@MOF Sensor via SC-SC Transformation: Enhancing the Formation of Excimer Emission and the Range and Sensitivity of Detection. ACS APPLIED MATERIALS & INTERFACES 2018; 10:18012-18020. [PMID: 29733192 DOI: 10.1021/acsami.8b05614] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this study, a water stable metal-organic framework FIR-53 is applied as a single-crystal container for anion exchange. The exceptional chemical stability and low crystallographic symmetry of FIR-53 makes it possible to determine anionic guests. Through ion exchange and single-crystal to single-crystal (SC-SC) transformation, 8-hydroxypyrene-1,3,6-trisulfonate (SG7, solvent green 7, ion form as SG73-) is introduced into the pores of FIR-53 to obtain SG7@FIR-53. Because of the spatial confinement and partition effect, SG7@FIR-53 shows the bright exciter emission of SG7 ions. Interestingly, the composite SG7@FIR-53 exhibits a sensitive fluorescence quenching response against Cr2O72- and MnO4- in aqueous solution. Especially, the detection limit toward MnO4- is as low as 0.12 ppb, which is the smallest value to date. Moreover, the prepared SG7@FIR-53 film also displays a broad response to nitro explosives in vapor/aqueous phase. Compared with the results of FIR-53, the range and sensitivity were greatly improved.
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Affiliation(s)
- Hong-Ru Fu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter , Chinese Academy of Sciences , Fuzhou , Fujian 35002 , P. R. China
- College of Chemistry and Chemical Engineering, Henan Province Function-oriented Porous Materials Key Laboratory , Luoyang Normal University , Luoyang 471934 , P. R. China
| | - Xiao-Xia Wu
- College of Chemistry and Chemical Engineering, Henan Province Function-oriented Porous Materials Key Laboratory , Luoyang Normal University , Luoyang 471934 , P. R. China
| | - Lu-Fang Ma
- College of Chemistry and Chemical Engineering, Henan Province Function-oriented Porous Materials Key Laboratory , Luoyang Normal University , Luoyang 471934 , P. R. China
| | - Fei Wang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter , Chinese Academy of Sciences , Fuzhou , Fujian 35002 , P. R. China
| | - Jian Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter , Chinese Academy of Sciences , Fuzhou , Fujian 35002 , P. R. China
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Zhong L, Yun K. Fluorometric 'switch-on' detection of heparin based on a system composed of rhodamine-labeled chitosan oligosaccharide lactate, and graphene oxide. Methods Appl Fluoresc 2018; 6:035011. [PMID: 29765011 DOI: 10.1088/2050-6120/aac51c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A novel fluorescence 'Switch on' for the detection of heparin based on the RhB-COL/GO system was achieved. A strong fluorescence dye, Rhodamine B, was modified by chitosan oligosaccharide lactate (COL), which plays a major role in the formation of a positively charged RhB-COL complex. RhB-COL was soluble and stable in solution, which was characterized by using Fourier transform infrared spectroscopy and x-ray photoelectron spectroscopy. GO sheets quenched the fluorescence intensity of RhB-COL due to electron transfer from RhB to the GO surface. The decrease in fluorescence intensity of RhB-COL with increasing GO concentration was recorded using a Cary Eclipse fluorescence spectrophotometer. On the other hand, the addition of heparin replaced GO to bind with the RhB-COL surface via an electrostatic and noncovalent bond due to the abundant negative charge, which resulted in recovery of the fluorescence intensity. This RhB-COL/GO system possessed high selectivity and good sensitivity for the detection of heparin compared to other biomolecules, such as glycine, D-glucose, hyaluronic acid, L-glutamic acid, and ascorbic acid. The linear response toward heparin was measured over the range, 0-1.8 U · ml-1, with a low detection limit of 0.04 U · ml-1. The satisfactory sensing performance of RhB-COL/GO for heparin supports new 'switch-on' sensor applications in heparin-related biomedical detection.
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Affiliation(s)
- Linlin Zhong
- Department of Bionanotechnology, Gachon University, Gyeonggi-do 13120, Republic of Korea
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