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QIN X, YUAN CL, SHI R, WANG SZ, WANG YL. Colorimetric Detection of Dopamine Based on Iodine-mediated Etching of Gold Nanorods. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2021. [DOI: 10.1016/s1872-2040(20)60073-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Ko M, Mendecki L, Eagleton AM, Durbin CG, Stolz RM, Meng Z, Mirica KA. Employing Conductive Metal-Organic Frameworks for Voltammetric Detection of Neurochemicals. J Am Chem Soc 2020; 142:11717-11733. [PMID: 32155057 DOI: 10.1021/jacs.9b13402] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This paper describes the first implementation of an array of two-dimensional (2D) layered conductive metal-organic frameworks (MOFs) as drop-casted film electrodes that facilitate voltammetric detection of redox active neurochemicals in a multianalyte solution. The device configuration comprises a glassy carbon electrode modified with a film of conductive MOF (M3HXTP2; M = Ni, Cu; and X = NH, 2,3,6,7,10,11-hexaiminotriphenylene (HITP) or O, 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP)). The utility of 2D MOFs in voltammetric sensing is measured by the detection of ascorbic acid (AA), dopamine (DA), uric acid (UA), and serotonin (5-HT) in 0.1 M PBS (pH = 7.4). In particular, Ni3HHTP2 MOFs demonstrated nanomolar detection limits of 63 ± 11 nM for DA and 40 ± 17 nM for 5-HT through a wide concentration range (40 nM-200 μM). The applicability in biologically relevant detection was further demonstrated in simulated urine using Ni3HHTP2 MOFs for the detection of 5-HT with a nanomolar detection limit of 63 ± 11 nM for 5-HT through a wide concentration range (63 nM-200 μM) in the presence of a constant background of DA. The implementation of conductive MOFs in voltammetric detection holds promise for further development of highly modular, sensitive, selective, and stable electroanalytical devices.
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Affiliation(s)
- Michael Ko
- Department of Chemistry, Burke Laboratory, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Lukasz Mendecki
- Department of Chemistry, Burke Laboratory, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Aileen M Eagleton
- Department of Chemistry, Burke Laboratory, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Claudia G Durbin
- Department of Chemistry, Burke Laboratory, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Robert M Stolz
- Department of Chemistry, Burke Laboratory, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Zheng Meng
- Department of Chemistry, Burke Laboratory, Dartmouth College, Hanover, New Hampshire 03755, United States
| | - Katherine A Mirica
- Department of Chemistry, Burke Laboratory, Dartmouth College, Hanover, New Hampshire 03755, United States
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Ramkumar R, Mathiselvam M, Sangaranarayanan MV. Thiourea linked glycolipid-assisted synthesis of sub-micrometer sized polyaniline spheres for enzyme less sensing of dopamine. J APPL ELECTROCHEM 2020. [DOI: 10.1007/s10800-020-01402-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Gabrielli L, Carril M, Padro D, Mancin F. Multimodal 19
F NMR Dopamine Detection and Imaging with a Nanoparticle-Based Displacement Assay. Chemistry 2018; 24:13036-13042. [DOI: 10.1002/chem.201802482] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 06/07/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Luca Gabrielli
- Dipartimento di Scienze Chimiche; Università di Padova; via Marzolo 1 35131 Padova Italy
| | - Monica Carril
- CIC biomaGUNE; Paseo Miramón 182 20014 San Sebastián Spain
- Ikerbasque, Basque Foundation for Science; 48011 Bilbao Spain
| | - Daniel Padro
- CIC biomaGUNE; Paseo Miramón 182 20014 San Sebastián Spain
| | - Fabrizio Mancin
- Dipartimento di Scienze Chimiche; Università di Padova; via Marzolo 1 35131 Padova Italy
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6
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A Fluorescent Biosensors for Detection Vital Body Fluids' Agents. SENSORS 2018; 18:s18082357. [PMID: 30042294 PMCID: PMC6111579 DOI: 10.3390/s18082357] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 07/13/2018] [Accepted: 07/20/2018] [Indexed: 12/18/2022]
Abstract
The clinical applications of sensing tools (i.e., biosensors) for the monitoring of physiologically important analytes are very common. Nowadays, the biosensors are being increasingly used to detect physiologically important analytes in real biological samples (i.e., blood, plasma, urine, and saliva). This review focuses on biosensors that can be applied to continuous, time-resolved measurements with fluorescence. The material presents the fluorescent biosensors for the detection of neurotransmitters, hormones, and other human metabolites as glucose, lactate or uric acid. The construction of microfluidic devices based on fluorescence uses a variety of materials, fluorescent dyes, types of detectors, excitation sources, optical filters, and geometrical systems. Due to their small size, these devices can perform a full analysis. Microfluidics-based technologies have shown promising applications in several of the main laboratory techniques, including blood chemistries, immunoassays, nucleic-acid amplification tests. Of the all technologies that are used to manufacture microfluidic systems, the LTCC technique seems to be an interesting alternative. It allows easy integration of electronic and microfluidic components on a single ceramic substrate. Moreover, the LTCC material is biologically and chemically inert, and is resistant to high temperature and pressure. The combination of all these features makes the LTCC technology particularly useful for implementation of fluorescence-based detection in the ceramic microfluidic systems.
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Potentiometric Biosensing Applications of Graphene Electrodes with Stabilized Polymer Lipid Membranes. CHEMOSENSORS 2018. [DOI: 10.3390/chemosensors6030025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Nikoleli GP, Nikolelis DP, Siontorou CG, Karapetis S, Nikolelis MT. Application of Biosensors Based on Lipid Membranes for the Rapid Detection of Toxins. BIOSENSORS 2018; 8:E61. [PMID: 29949911 PMCID: PMC6163383 DOI: 10.3390/bios8030061] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 06/04/2018] [Accepted: 06/21/2018] [Indexed: 11/16/2022]
Abstract
Lipid assemblies in the form of two dimensional films have been used extensively as biosensing platforms. These films exhibit certain similarities with cell membranes, thus providing a suitable means for the immobilization of proteinaceous moieties and, further, a number of intrinsic signal amplification mechanisms. Their implementation in the detection of toxins yielded reliable and fast detectors for in field analyses of environmental and clinical samples. Some examples are presented herein, including aflatoxin and cholera toxin detection. The conditions and parameters that determine the analytical specifications of the lipid membrane sensors are discussed, advantages and technology bottlenecks are reviewed, and possible further developments are highlighted.
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Affiliation(s)
- Georgia-Paraskevi Nikoleli
- Laboratory of Inorganic & Analytical Chemistry, School of Chemical Engineering, Department 1, Chemical Sciences, National Technical University of Athens, 9 Iroon Polytechniou St., 15780 Athens, Greece.
| | - Dimitrios P Nikolelis
- Laboratory of Environmental Chemistry, Department of Chemistry, University of Athens, Panepistimiopolis-Kouponia, 15771 Athens, Greece.
| | - Christina G Siontorou
- Laboratory of Simulation of Industrial Processes, Department of Industrial Management and Technology, School of Maritime and Industry, University of Piraeus, 18534 Pireus, Greece.
| | - Stephanos Karapetis
- Laboratory of Inorganic & Analytical Chemistry, School of Chemical Engineering, Department 1, Chemical Sciences, National Technical University of Athens, 9 Iroon Polytechniou St., 15780 Athens, Greece.
| | - Marianna-Thalia Nikolelis
- Laboratory of Simulation of Industrial Processes, Department of Industrial Management and Technology, School of Maritime and Industry, University of Piraeus, 18534 Pireus, Greece.
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Mohsin MA, Liu BD, Zhang XL, Yang WJ, Liu LS, Jiang X. Cellular-membrane inspired surface modification of well aligned ZnO nanorods for chemosensing of epinephrine. RSC Adv 2017. [DOI: 10.1039/c6ra26250c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Modified ZnO nanorods array to form a chemical sensor for neurotransmitters. The interspaces between the nanorods offer highly efficient immobilization of the lipid membrane containing the calixarene, which act as receptor molecule.
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Affiliation(s)
- M. A. Mohsin
- Shenyang National Laboratory for Materials Sciences (SYNL)
- Institute of Metal Research (IMR)
- Chinese Academy of Sciences (CAS)
- Shenyang
- China
| | - B. D. Liu
- Shenyang National Laboratory for Materials Sciences (SYNL)
- Institute of Metal Research (IMR)
- Chinese Academy of Sciences (CAS)
- Shenyang
- China
| | - X. L. Zhang
- Shenyang National Laboratory for Materials Sciences (SYNL)
- Institute of Metal Research (IMR)
- Chinese Academy of Sciences (CAS)
- Shenyang
- China
| | - W. J. Yang
- Shenyang National Laboratory for Materials Sciences (SYNL)
- Institute of Metal Research (IMR)
- Chinese Academy of Sciences (CAS)
- Shenyang
- China
| | - L. S. Liu
- Shenyang National Laboratory for Materials Sciences (SYNL)
- Institute of Metal Research (IMR)
- Chinese Academy of Sciences (CAS)
- Shenyang
- China
| | - X. Jiang
- Shenyang National Laboratory for Materials Sciences (SYNL)
- Institute of Metal Research (IMR)
- Chinese Academy of Sciences (CAS)
- Shenyang
- China
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Bratakou S, Nikoleli GP, Siontorou CG, Nikolelis DP, Karapetis S, Tzamtzis N. Development of an Electrochemical Biosensor for the Rapid Detection of Saxitoxin Based on Air Stable Lipid Films with Incorporated Anti-STX Using Graphene Electrodes. ELECTROANAL 2016. [DOI: 10.1002/elan.201600652] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Spyridoula Bratakou
- Laboratory of Inorganic & Analytical Chemistry, School of Chemical Engineering, Dept 1, Chemical Sciences; National Technical University of Athens; 9 Iroon Polytechniou St. Athens 157 80 Greece
| | - Georgia-Paraskevi Nikoleli
- Laboratory of Inorganic & Analytical Chemistry, School of Chemical Engineering, Dept 1, Chemical Sciences; National Technical University of Athens; 9 Iroon Polytechniou St. Athens 157 80 Greece
| | - Christina G. Siontorou
- Laboratory of Simulation of Industrial Processes, Department of Industrial Management and Technology, School of Maritime and Industry; University of Piraeus
| | - Dimitrios P. Nikolelis
- Laboratory of Environmental Chemistry, Department of Chemistry; University of Athens; Panepistimiopolis-Kouponia GR- 15771 Athens
| | - Stephanos Karapetis
- Laboratory of Inorganic & Analytical Chemistry, School of Chemical Engineering, Dept 1, Chemical Sciences; National Technical University of Athens; 9 Iroon Polytechniou St. Athens 157 80 Greece
| | - Nikolaos Tzamtzis
- Laboratory of Inorganic & Analytical Chemistry, School of Chemical Engineering, Dept 1, Chemical Sciences; National Technical University of Athens; 9 Iroon Polytechniou St. Athens 157 80 Greece
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Roychoudhury A, Basu S, Jha SK. Dopamine biosensor based on surface functionalized nanostructured nickel oxide platform. Biosens Bioelectron 2016; 84:72-81. [DOI: 10.1016/j.bios.2015.11.061] [Citation(s) in RCA: 116] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Revised: 11/19/2015] [Accepted: 11/20/2015] [Indexed: 12/11/2022]
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12
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Yan F, Kong D, Luo Y, Ye Q, Wang Y, Chen L. Carbon nanodots prepared for dopamine and Al(3+) sensing, cellular imaging and logic gate operation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 68:732-738. [PMID: 27524074 DOI: 10.1016/j.msec.2016.05.123] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 05/04/2016] [Accepted: 05/27/2016] [Indexed: 01/14/2023]
Abstract
Fluorescent carbon nanodots (CNDs) were synthesized through a facile, economic and green one-step hydrothermal process. The CNDs exhibit various merits including excellent solubility, superior photostability and low toxicity. Besides, the CNDs can be used as an effective fluorescent probe for dopamine and Al(3+). What's more, this CNDs based fluorescent probe was favorably applied to the analyses of dopamine in biological fluids and Al(3+) in food samples. This CDs based sensing platform shows its potential applications in the field of biology and food analysis with extraordinary advantages such as fast and simple as well as environmental-friendly. Inspired by these results, the prepared CNDs can be utilized as logic gates at the molecular level.
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Affiliation(s)
- Fanyong Yan
- State Key Laboratory of Separation Membranes and Membrane Processes, Key Lab of Fiber Modification & Functional Fiber of Tianjin, Tianjin Polytechnic University, Tianjin 300387, PR China
| | - Depeng Kong
- State Key Laboratory of Separation Membranes and Membrane Processes, Key Lab of Fiber Modification & Functional Fiber of Tianjin, Tianjin Polytechnic University, Tianjin 300387, PR China
| | - Yunmei Luo
- Department of Pharmacology/Key Laboratory for Basic Pharmacology of Ministry of Education, Zunyi Medical College, Guizhou 563000, PR China
| | - Qianghua Ye
- State Key Laboratory of Separation Membranes and Membrane Processes, Key Lab of Fiber Modification & Functional Fiber of Tianjin, Tianjin Polytechnic University, Tianjin 300387, PR China
| | - Yinyin Wang
- State Key Laboratory of Separation Membranes and Membrane Processes, Key Lab of Fiber Modification & Functional Fiber of Tianjin, Tianjin Polytechnic University, Tianjin 300387, PR China
| | - Li Chen
- State Key Laboratory of Separation Membranes and Membrane Processes, Key Lab of Fiber Modification & Functional Fiber of Tianjin, Tianjin Polytechnic University, Tianjin 300387, PR China
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13
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Bratakou S, Nikoleli GP, Siontorou CG, Karapetis S, Nikolelis DP, Tzamtzis N. Electrochemical Biosensor for Naphthalene Acetic Acid in Fruits and Vegetables Based on Lipid Films with Incorporated Auxin-binding Protein Receptor Using Graphene Electrodes. ELECTROANAL 2016. [DOI: 10.1002/elan.201600152] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Spyridoula Bratakou
- Laboratory of Inorganic & Analytical Chemistry, School of Chemical Engineering, Dept 1, Chemical Sciences; National Technical University of Athens; 9 Iroon Polytechniou St. Athens 157 80 Greece
| | - Georgia-Paraskevi Nikoleli
- Laboratory of Inorganic & Analytical Chemistry, School of Chemical Engineering, Dept 1, Chemical Sciences; National Technical University of Athens; 9 Iroon Polytechniou St. Athens 157 80 Greece
| | - Christina G. Siontorou
- Laboratory of Simulation of Industrial Processes, Department of Industrial Management and Technology, School of Maritime and Industry; University of Piraeus
| | - Stephanos Karapetis
- Laboratory of Inorganic & Analytical Chemistry, School of Chemical Engineering, Dept 1, Chemical Sciences; National Technical University of Athens; 9 Iroon Polytechniou St. Athens 157 80 Greece
| | - Dimitrios P. Nikolelis
- Laboratory of Environmental Chemistry, Department of Chemistry; University of Athens; Panepistimiopolis-Kouponia GR-15771 Athens Greece
| | - Nikolaos Tzamtzis
- Laboratory of Inorganic Chemistry, Department of Chemistry; University of Athens; Panepistimiopolis-Kouponia GR-15771 Athens Greece
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14
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Karapetis S, Nikoleli GP, Siontorou CG, Nikolelis DP, Tzamtzis N, Psaroudakis N. Development of an Electrochemical Biosensor for the Rapid Detection of Cholera Toxin Based on Air Stable Lipid Films with Incorporated Ganglioside GM1 Using Graphene Electrodes. ELECTROANAL 2016. [DOI: 10.1002/elan.201501134] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Stephanos Karapetis
- Laboratory of Inorganic & Analytical Chemistry; School of Chemical Engineering, Dept 1, Chemical Sciences; National Technical University of Athens; 9 Iroon Polytechniou St. Athens 157 80 Greece
| | - Georgia-Paraskevi Nikoleli
- Laboratory of Inorganic & Analytical Chemistry; School of Chemical Engineering, Dept 1, Chemical Sciences; National Technical University of Athens; 9 Iroon Polytechniou St. Athens 157 80 Greece
| | - Christina G. Siontorou
- Laboratory of Simulation of Industrial Processes; Department of Industrial Management and Technology; School of Maritime and Industry; University of Piraeus
| | - Dimitrios P. Nikolelis
- Laboratory of Environmental Chemistry; Department of Chemistry; University of Athens; Panepistimiopolis-Kouponia GR-15771 Athens Greece
| | - Nikolaos Tzamtzis
- Laboratory of Inorganic & Analytical Chemistry; School of Chemical Engineering, Dept 1, Chemical Sciences; National Technical University of Athens; 9 Iroon Polytechniou St. Athens 157 80 Greece
| | - Nikolas Psaroudakis
- Laboratory of Inorganic Chemistry; Department of Chemistry; University of Athens; Panepistimiopolis-Kouponia GR-15771 Athens Greece
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Bai L, Qiao S, Li H, Fang Y, Yang Y, Huang H, Liu Y, Song Y, Kang Z. N-Doped carbon dot with surface dominant non-linear optical properties. RSC Adv 2016. [DOI: 10.1039/c6ra18837k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Nonlinear optical (NLO) property of N-doped carbon dots was investigated by the Z-scan technique. The carbonyl group on the surface of N-CDs plays a key role and has significant impact on their third order susceptibility χ(3).
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Affiliation(s)
- Liang Bai
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices
- Institute of Functional Nano and Soft Materials (FUNSOM)
- Soochow University
- Suzhou
- China
| | - Shi Qiao
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices
- Institute of Functional Nano and Soft Materials (FUNSOM)
- Soochow University
- Suzhou
- China
| | - Hao Li
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices
- Institute of Functional Nano and Soft Materials (FUNSOM)
- Soochow University
- Suzhou
- China
| | - Yu Fang
- Department of Physics
- Soochow University
- Suzhou
- China
| | - Yanmei Yang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices
- Institute of Functional Nano and Soft Materials (FUNSOM)
- Soochow University
- Suzhou
- China
| | - Hui Huang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices
- Institute of Functional Nano and Soft Materials (FUNSOM)
- Soochow University
- Suzhou
- China
| | - Yang Liu
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices
- Institute of Functional Nano and Soft Materials (FUNSOM)
- Soochow University
- Suzhou
- China
| | - Yinglin Song
- Department of Physics
- Soochow University
- Suzhou
- China
| | - Zhenhui Kang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices
- Institute of Functional Nano and Soft Materials (FUNSOM)
- Soochow University
- Suzhou
- China
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17
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Li H, Yang M, Liu J, Zhang Y, Yang Y, Huang H, Liu Y, Kang Z. A practical and highly sensitive C3N4-TYR fluorescent probe for convenient detection of dopamine. NANOSCALE 2015; 7:12068-12075. [PMID: 26118497 DOI: 10.1039/c5nr03316k] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The C3N4-tyrosinase (TYR) hybrid is a highly accurate, sensitive and simple fluorescent probe for the detection of dopamine (DOPA). Under optimized conditions, the relative fluorescence intensity of C3N4-TYR is proportional to the DOPA concentration in the range from 1 × 10(-3) to 3 × 10(-8) mol L(-1) with a correlation coefficient of 0.995. In the present system, the detection limit achieved is as low as 3 × 10(-8) mol L(-1). Notably, these quantitative detection results for clinical samples are comparable to those of high performance liquid chromatography. Moreover, the enzyme-encapsulated C3N4 sensing arrays on both glass slide and test paper were evaluated, which revealed sensitive detection and excellent stability. The results reported here provide a new approach for the design of a multifunctional nanosensor for the detection of bio-molecules.
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Affiliation(s)
- Hao Li
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, 199 Ren'ai Road, Suzhou, 215123, Jiangsu, PR China.
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18
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Microwave-assisted preparation of N-doped carbon dots as a biosensor for electrochemical dopamine detection. J Colloid Interface Sci 2015; 452:199-202. [PMID: 25942098 DOI: 10.1016/j.jcis.2015.04.016] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2015] [Revised: 04/09/2015] [Accepted: 04/09/2015] [Indexed: 12/11/2022]
Abstract
A new N-doped carbon dots (NCDs) could be prepared by using the microwave-assisted technique within 10 min without the need for any solvent or catalyst. The NCDs exhibited a highly sensitive electrochemical response toward dopamine (DA) in Phosphate Buffered Saline (PBS) (pH=6.5). The detection limit of DA was calculated by differential pulse voltammetry (DPV) as low as 1.2×10(-9) mol/L with a linear dynamic range of 5.0×10(-8) to 8.0×10(-6) mol/L. These results suggested that this new NCDs could be effectively used for the direct and rapid detection of trace levels of DA in human serum and urine samples.
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Zangeneh Kamali K, Pandikumar A, Sivaraman G, Lim HN, Wren SP, Sun T, Huang NM. Silver@graphene oxide nanocomposite-based optical sensor platform for biomolecules. RSC Adv 2015. [DOI: 10.1039/c4ra11356j] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
A silver incorporated graphene oxide nanocomposite was prepared and used for the detection of biomolecules using an absorbance based optical sensing method.
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Affiliation(s)
- Khosro Zangeneh Kamali
- Low Dimensional Materials Research Centre
- Department of Physics
- Faculty of Science
- University of Malaya
- 50603 Kuala Lumpur
| | - Alagarsamy Pandikumar
- Low Dimensional Materials Research Centre
- Department of Physics
- Faculty of Science
- University of Malaya
- 50603 Kuala Lumpur
| | - Gandhi Sivaraman
- School of Chemistry
- Madurai Kamaraj University
- Madurai-625021
- India
| | - Hong Ngee Lim
- Department of Chemistry
- Faculty of Science
- Universiti Putra Malaysia
- 43400 UPM Serdang
- Malaysia
| | - Stephen Paul Wren
- School of Engineering and Mathematical Sciences
- City University London
- London EC1V0HB
- UK
| | - Tong Sun
- School of Engineering and Mathematical Sciences
- City University London
- London EC1V0HB
- UK
| | - Nay Ming Huang
- Low Dimensional Materials Research Centre
- Department of Physics
- Faculty of Science
- University of Malaya
- 50603 Kuala Lumpur
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Ganguly M, Mondal C, Jana J, Pal A, Pal T. Selective dopamine chemosensing using silver-enhanced fluorescence. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:4120-8. [PMID: 24650302 DOI: 10.1021/la404982t] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Condensation product of salicylaldehyde and 1,3 propylenediamine becomes a diiminic Schiff base, which is oxidized by AgNO3 in alkaline solution, and in turn, stable Ag(0) is produced at room temperature. Under this condition, the solution exhibits intense silver nanoparticle enhanced fluorescence (SEF) with the λ(em) at 412 nm. Dopamine is selectively detected down to the nanomolar level via exclusive fluorescence quenching of the SEF. Dopamine-infested solution regains the fluorescence [i.e., SEF in the presence of Hg(II) ions]. Thus dopamine and Hg(II) in succession demonstrate "turn off/on" fluorescence due to the change in the scattering cross section of Ag(0) and gives a quantitative measure of dopamine in real samples. The proposed method is free from interferences of common biocompetitors.
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Affiliation(s)
- Mainak Ganguly
- Department of Chemistry, Indian Institute of Technology , Kharagpur-721302, India
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21
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In vitro studies of carbon fiber microbiosensor for dopamine neurotransmitter supported by copper-graphene oxide composite. Mikrochim Acta 2014. [DOI: 10.1007/s00604-014-1202-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Li H, Liu J, Yang M, Kong W, Huang H, Liu Y. Highly sensitive, stable, and precise detection of dopamine with carbon dots/tyrosinase hybrid as fluorescent probe. RSC Adv 2014. [DOI: 10.1039/c4ra06163b] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The carbon dots/tyrosinase hybrid as a low-cost fluorescent probe for the detection of dopamine exhibits high sensitivity, stability, and precision.
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Affiliation(s)
- Hao Li
- Institute of Functional Nano & Soft Materials (FUNSOM)
- Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Jiangsu 215123, China
| | - Juan Liu
- Institute of Functional Nano & Soft Materials (FUNSOM)
- Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Jiangsu 215123, China
| | - Manman Yang
- Institute of Functional Nano & Soft Materials (FUNSOM)
- Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Jiangsu 215123, China
| | - Weiqian Kong
- Institute of Functional Nano & Soft Materials (FUNSOM)
- Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Jiangsu 215123, China
| | - Hui Huang
- Institute of Functional Nano & Soft Materials (FUNSOM)
- Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Jiangsu 215123, China
| | - Yang Liu
- Institute of Functional Nano & Soft Materials (FUNSOM)
- Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Jiangsu 215123, China
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Potentiometric cholesterol biosensing application of graphene electrode with stabilized polymeric lipid membrane. OPEN CHEM 2013. [DOI: 10.2478/s11532-013-0285-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
AbstractAbstract A novel potentiometric cholesterol biosensor has been fabricated through the immobilization of the stabilized polymeric lipid membrane onto graphene electrode. The stabilized polymeric lipid membrane is composed of cholesterol oxidase enzyme and polymerization mixture; which holds paramount influence on the properties of the cholesterol biosensor. The presented biosensor reveals an appreciable reproducibility, good selectivity and high sensing capability with a linear slope curve of ∼64 mV per decade. The strong biocompatibility among stabilized polymeric lipid membranes and human biofluids provides the possibility to use for real blood samples and other biological applications. Graphical abstract
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Maduraiveeran G, Ramaraj R. Silver nanoparticles embedded in functionalized silicate sol-gel network film as optical sensor for the detection of biomolecules. JOURNAL OF ANALYTICAL CHEMISTRY 2013. [DOI: 10.1134/s1061934813030040] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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25
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Practical considerations for preparing polymerized phospholipid bilayer capillary coatings for protein separations. Anal Chim Acta 2013; 772:93-8. [PMID: 23540253 DOI: 10.1016/j.aca.2013.02.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2012] [Revised: 11/27/2012] [Accepted: 02/14/2013] [Indexed: 11/21/2022]
Abstract
Phosphorylcholine (PC) based phospholipid bilayers have proven useful as capillary coating materials due to their inherent resistance to non-specific protein adsorption. The primary limitation of this important class of capillary coatings remains the limited long-term chemical and physical stability of the coatings. Recently, a method for increasing phospholipid coating stability in fused silica capillaries via utilization of polymerized, synthetic phospholipids was reported. Here, we expand upon these studies by investigating polymerized lipid bilayer capillary coatings with respect to separation performance including run-to-run, day-to-day and column-to-column reproducibility and long-term stability. In addition, the effects of pH and capillary inner diameter on polymerized phospholipid coated capillaries were investigated to identify optimized coating conditions. The coatings are stabilized for protein separations across a wide range of pH values (4.0-9.3), a unique property for capillary coating materials. Additionally, smaller inner diameter capillaries (≤50 μm) were found to yield marked enhancements in coating stability and reproducibility compared to wider bore capillaries, demonstrating the importance of capillary size for separations employing polymerized phospholipid coatings.
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26
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A simple but highly sensitive and selective calixarene-based voltammetric sensor for serotonin. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2012.09.033] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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27
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Psychoyios VN, Nikoleli GP, Tzamtzis N, Nikolelis DP, Psaroudakis N, Danielsson B, Israr MQ, Willander M. Potentiometric Cholesterol Biosensor Based on ZnO Nanowalls and Stabilized Polymerized Lipid Film. ELECTROANAL 2012. [DOI: 10.1002/elan.201200591] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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28
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Flow Potentiometric Injection Analysis of Uric Acid Using Lipid Stabilized Films with Incorporated Uricase on ZnO Nanowires. ELECTROANAL 2012. [DOI: 10.1002/elan.201200220] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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29
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Nikoleli GP, Israr MQ, Tzamtzis N, Nikolelis DP, Willander M, Psaroudakis N. Structural Characterization of Graphene Nanosheets for Miniaturization of Potentiometric Urea Lipid Film Based Biosensors. ELECTROANAL 2012. [DOI: 10.1002/elan.201200104] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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30
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Huang H, Gao Y, Shi F, Wang G, Shah SM, Su X. Determination of catecholamine in human serum by a fluorescent quenching method based on a water-soluble fluorescent conjugated polymer–enzyme hybrid system. Analyst 2012; 137:1481-6. [DOI: 10.1039/c2an16143e] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Michaloliakos AI, Nikoleli GP, Siontorou CG, Nikolelis DP. Rapid Flow Injection Electrochemical Detection of Arochlor 1242 Using Stabilized Lipid Membranes with Incorporated Sheep anti-PCB Antibody. ELECTROANAL 2011. [DOI: 10.1002/elan.201100393] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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32
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Nikoleli GP, Nikolelis DP, Tzamtzis N. Development of an Electrochemical Biosensor for the Rapid Detection of Cholera Toxin Using Air Stable Lipid Films with incorporated Ganglioside GM1. ELECTROANAL 2011. [DOI: 10.1002/elan.201100307] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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33
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Yu C, Luo M, Zeng F, Zheng F, Wu S. Mesoporous silica particles for selective detection of dopamine with β-cyclodextrin as the selective barricade. Chem Commun (Camb) 2011; 47:9086-8. [DOI: 10.1039/c1cc12995c] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Funck M, Guest DP, Cave GW. Microwave-assisted synthesis of resorcin[4]arene and pyrogallol[4]arene macrocycles. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.09.115] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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35
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Nikolelis DP, Hianik T, Nikoleli GP. Stabilized Lipid Films in Electrochemical Biosensors. ELECTROANAL 2010. [DOI: 10.1002/elan.201000420] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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36
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Construction of a simple optical sensor based on air stable lipid film with incorporated urease for the rapid detection of urea in milk. Anal Chim Acta 2010; 675:58-63. [DOI: 10.1016/j.aca.2010.07.014] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2010] [Revised: 07/06/2010] [Accepted: 07/09/2010] [Indexed: 11/20/2022]
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37
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Njagi J, Chernov MM, Leiter JC, Andreescu S. Amperometric detection of dopamine in vivo with an enzyme based carbon fiber microbiosensor. Anal Chem 2010; 82:989-96. [PMID: 20055419 DOI: 10.1021/ac9022605] [Citation(s) in RCA: 159] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
We developed a novel implantable enzyme-based carbon fiber biosensor for in vivo monitoring of dopamine. The biosensor is fabricated using tyrosinase immobilized in a biocompatible matrix consisting of a biopolymer, chitosan and ceria-based metal oxides, deposited onto the surface of a carbon fiber microelectrode with a diameter of approximately 100 microm. Tyrosinase catalyzes the conversion of dopamine to o-dopaquinone, and the reduction of o-dopaquinone, which requires a low potential difference, was detected electrochemically. The role of each component in the sensing layer was systematically investigated in relation to the analytical performance of the biosensor. In its optimal configuration, the biosensor demonstrated a detection limit of 1 nM dopamine, a linear range of 5 orders of magnitude between 10 nM and 220 microM, a sensitivity of 14.2 nA x microM(-1), and good selectivity against ascorbic acid, uric acid, serotonin, norepinephrine, epinephrine, and 3,4-dihydroxy-l-phenylalanine (L-DOPA). The system provided continuous, real time monitoring of electrically stimulated dopamine release in the brain of an anesthetized rat. Levels of dopamine up to 1.69 microM were measured. This new implantable dopamine biosensor provides an alternative to fast scan cyclic voltammetry for in vivo monitoring of dopamine.
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Affiliation(s)
- John Njagi
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13699, USA
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38
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Effects of the kinematic viscosity and surface tension on the bubble take-off period in a catalase-hydrogen peroxide system. Colloids Surf B Biointerfaces 2009; 71:124-7. [PMID: 19250805 DOI: 10.1016/j.colsurfb.2009.01.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2008] [Revised: 01/14/2009] [Accepted: 01/22/2009] [Indexed: 11/20/2022]
Abstract
The effect of kinematic viscosity and surface tension of the solution was investigated by adding catalase, glucose oxidase, or glucose on the bubble movement in a catalase-hydrogen peroxide system. The kinematic viscosity was measured using a Cannon-Fenske kinematic viscometer. The surface tension of the solution was measured by the Wilhelmy method using a self-made apparatus. The effects of the hole diameter/cell wall thickness, catalase concentration, glucose concentration, and glucose oxidase concentration on the kinematic viscosity, surface tension, and bubble take-off period were investigated. With our system, the effects of the changes in the solution materiality on the bubble take-off period were proven to be very small in comparison to the change in the oxygen-producing rate.
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Nikolelis D, Raftopoulou G, Psaroudakis N, Nikoleli G. Development of an Electrochemical Biosensor for the Rapid Detection of Carbofuran Based on Air Stable Lipid Films with Incorporated Calix[4]arene Phosphoryl Receptor. ELECTROANAL 2008. [DOI: 10.1002/elan.200804225] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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40
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Preparation of a selective receptor for carbofuran for the development of a simple optical spot test for its rapid detection using stabilized in air lipid films with incorporated receptor. Anal Chim Acta 2008; 620:134-41. [PMID: 18558134 DOI: 10.1016/j.aca.2008.05.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2008] [Revised: 05/08/2008] [Accepted: 05/08/2008] [Indexed: 11/23/2022]
Abstract
The present technique describes the preparation of a selective receptor for carbofuran and the development of a simple sensitive spot optical test for the rapid one-shot detection of carbofuran using stabilized lipid films supported on a methacrylate polymer on a glass fiber filter with incorporated artificial receptor. The selective receptor was synthesized by a chemical reaction using a resorcin[4]arene receptor by transforming all the -OH groups into phosphoryl groups. The lipid films without this receptor provided fluorescence under a UV lamp. The use of the receptor in these films quenched this fluorescence and the colour became similar to that of the filters without the lipid films. A drop of aqueous solution of carbofuran provided a "switching on" of the fluorescence which allows the rapid detection of this insecticide at the levels of 10(-9)M concentrations. The effect of potent interferences included a wide range of compounds. The results showed no interferences from these compounds in concentration levels usually found in real samples. The effect of interference of proteins and lipids was also examined. The reproducibility of the method was checked in about 100 samples and all of them were found to provide similar results. The device was tested/evaluated in real samples of fruits, vegetables and dairy products. Note that the colours of the filters remain stable for periods of more than 2 months.
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41
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Mansfield E, Ross EE, Aspinwall CA. Preparation and characterization of cross-linked phospholipid bilayer capillary coatings for protein separations. Anal Chem 2007; 79:3135-41. [PMID: 17373774 PMCID: PMC2665996 DOI: 10.1021/ac0618829] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Analysis of protein and peptide mixtures via capillary electrophoresis is hindered by nonspecific adsorption of analytes to the capillary walls, resulting in poor separations and quantitative reproducibility. Phospholipid bilayer (PLB) coatings are very promising for improving protein and peptide separations due to the native resistance to nonspecific protein adsorption offered by PLBs; however, these coatings display limited chemical and temporal stability. Here, we show the preparation and characterization of a highly cross-linked, polymerized phospholipid capillary coating prepared using bis-SorbPC. Poly(bis-SorbPC) PLB coatings are prepared in situ within fully enclosed fused silica capillaries via self-assembly and radical polymerization. Polymerization of the PLB coating stabilizes the membrane against desorption from the surface and migration in an electric field, improves the temporal and chemical stability, and allows for the separation of both cationic and anionic proteins, while preserving the native resistance to nonspecific protein adsorption of natural PLBs.
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Affiliation(s)
| | | | - Craig A. Aspinwall
- Author to whom correspondence should be addressed: ; 520-621-6338 (phone) 520-621-8407 (fax)
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Abstract
Structure and physical properties of biomembranes and model membranesBiomembranes belong to the most important structures of the cell and the cell organels. They play not only structural role of the barrier separating the external and internal part of the membrane but contain also various functional molecules, like receptors, ionic channels, carriers and enzymes. The cell membrane also preserves non-equillibrium state in a cell which is crucial for maintaining its excitability and other signaling functions. The growing interest to the biomembranes is also due to their unique physical properties. From physical point of view the biomembranes, that are composed of lipid bilayer into which are incorporated integral proteins and on their surface are anchored peripheral proteins and polysaccharides, represent liquid scrystal of smectic type. The biomembranes are characterized by anisotropy of structural and physical properties. The complex structure of biomembranes makes the study of their physical properties rather difficult. Therefore several model systems that mimic the structure of biomembranes were developed. Among them the lipid monolayers at an air-water interphase, bilayer lipid membranes (BLM), supported bilayer lipid membranes (sBLM) and liposomes are most known. This work is focused on the introduction into the "physical word" of the biomembranes and their models. After introduction to the membrane structure and the history of its establishment, the physical properties of the biomembranes and their models areare stepwise presented. The most focus is on the properties of lipid monolayers, BLM, sBLM and liposomes that were most detailed studied. This contribution has tutorial character that may be usefull for undergraduate and graduate students in the area of biophysics, biochemistry, molecular biology and bioengineering, however it contains also original work of the author and his co-worker and PhD students, that may be usefull also for specialists working in the field of biomembranes and model membranes.
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44
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Nikolelis D, Raftopoulou G, Nikoleli GP, Simantiraki M. Stabilized Lipid Membrane Based Biosensors with Incorporated Enzyme for Repetitive Uses. ELECTROANAL 2006. [DOI: 10.1002/elan.200603702] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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45
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Vitovic P, Nikolelis DP, Hianik T. Study of calix[4]resorcinarene–dopamine complexation in mixed phospholipid monolayers formed at the air–water interface. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2006; 1758:1852-61. [PMID: 17010930 DOI: 10.1016/j.bbamem.2006.08.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2006] [Revised: 08/03/2006] [Accepted: 08/17/2006] [Indexed: 11/26/2022]
Abstract
We have studied the physical properties of monolayers formed by calix[4]resorcinarene and in mixtures with dipalmitoyl phosphatidylcholine (DPPC) in various molar ratios formed at the air-water interface and at presence of dopamine in water subphase by means of measurements of surface pressure and dipole potential. We showed that both calix[4]resorcinarene as well as its mixture with DPPC form stable monolayers at the water subphase. The presence of dopamine resulted in an increase of the mean molecular area and in a decrease of the compressibility modulus of the monolayers. For mixed monolayers at higher content of calix[4]resorcinarene (> 0.2 molar fraction) a deviation from ideal miscibility took place especially for monolayers in a solid state. This can be connected with formation of aggregates of calix[4] resorcinarene. Lowest miscibility and weakest interaction of dopamine with a monolayer was observed for calix[4]resorcinarene molar fraction of 0.33 in the monolayer.
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Affiliation(s)
- P Vitovic
- Department of Nuclear Physics and Biophysics, Faculty of Mathematics, Physics and Computer Sciences, Comenius University, 842 48 Bratislava, Slovakia
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46
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Doong RA, Shih HM. Glutamate optical biosensor based on the immobilization of glutamate dehydrogenase in titanium dioxide sol–gel matrix. Biosens Bioelectron 2006; 22:185-91. [PMID: 16458499 DOI: 10.1016/j.bios.2005.12.020] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2005] [Revised: 12/09/2005] [Accepted: 12/16/2005] [Indexed: 11/29/2022]
Abstract
A simple and novel titania sol-gel derived optical biosensor coupled with carboxy seminaphthorhodamine-1-dextran (SNARF-1-dextran) as the fluorescent dye was fabricated for the determination of glutamate in water and biological samples. The NADH-dependent glutamate dehydrogenase (GLDH) was trapped in titania sol-gel derived matrix prepared by vapor deposition method. In addition, scanning electron microscopy (SEM) and atomic force microscopy (AFM) were used to characterize the surface morphology of the spots. SEM and AFM images showed that the deposition of titania precursor at 27 degrees C for 6.5h was found to be suitable to form transparent titania sol-gel matrix to encapsulate GLDH and fluorescent probe. AFM images showed that the roughness of TiO(2) surface increased from 2.16 nm in the absence of GLDH and SNARF to 37.8 nm after the immobilization. The developed titania biosensor has good analytical performance with water samples. A dynamic range between 0.04 and 10mM with the detection limit of 5.5 microM were observed. The responses to glutamate in biological samples also showed good performances, and the dynamic range and detection limit were 0.02-10mM and 6.7 microM, respectively. High precision with relative standard deviations of 4.2 and 10.7% in water and biological samples, respectively, were also demonstrated. In addition, the biosensor showed a relatively high storage stability over more than 1 month. Results obtained in this study clearly demonstrate that this simple vapor deposition method can be successfully used to form transparent titania sol-gel film for the fabrication of glutamate biosensors that are suitable for optical detection of glutamate in water and biological samples.
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Affiliation(s)
- Ruey-an Doong
- Department of Atomic Science, National Tsing Hua University, 101, Sec. 2, Kuang Fu Road, Hsinchu 30013, Taiwan.
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Nikolelis D, Raftopoulou G, Siontorou C. Preparation of a Selective Receptor for Ephedrine for the Rapid Electrochemical Detection of Ephedrine in Human Urine Using Stabilized in Air Lipid Films with Incorporated Ephedrine Receptor. ELECTROANAL 2005. [DOI: 10.1002/elan.200503317] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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48
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Nikolelis D, Siontorou C, Theoharis G, Bitter I. Flow Injection Analysis of Mixtures of Dopamine, Adrenaline and Ephedrine in Human Biofluids Using Stabilized after Storage in Air Lipid Membranes with a Novel Incorporated Resorcin[4]arene Receptor. ELECTROANAL 2005. [DOI: 10.1002/elan.200403168] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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49
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Nikolelis DP, Simantiraki MG, Siontorou CG, Toth K. Flow injection analysis of carbofuran in foods using air stable lipid film based acetylcholinesterase biosensor. Anal Chim Acta 2005. [DOI: 10.1016/j.aca.2004.12.086] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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50
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Nikolelis DP, Psaroudakis N, Ferderigos N. Preparation of a Selective Receptor for Ephedrine for the Development of an Optical Spot Test for the Detection of Ephedrine in Human Urine Using Stabilized in Air Lipid Films with Incorporated Receptor. Anal Chem 2005; 77:3217-21. [PMID: 15889911 DOI: 10.1021/ac0484023] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The present technique describes the preparation of a selective receptor for ephedrine and a simple sensitive spot optical test for the rapid one-shot detection of ephedrine in human urine using lipid films with an incorporated receptor that are synthesized by a chemical reaction with a methacrylate polymer on a glass fiber filter. The selective receptor was synthesized using a resorcin[4]arene receptor and by transforming all the -OH groups into methoxy groups. The lipid films without this receptor provided fluorescence under a UV lamp. The use of the receptor in these films quenched this fluorescence, and the color became similar to that of the filters without the lipid films. A drop of aqueous solution of ephedrine provided a "switching on" of the fluorescence, which allows the rapid detection of this stimulant in human urine at the levels of 10(-8) M concentrations. The effect of potent interferences (i.e., proteins, lipids, ascorbic aid, glucose, leucine, glycine, tartrate, citrate, bicarbonate, and caffeine) was examined. The results showed no interferences from these compounds in concentration levels usually found in human urine samples. Dopamine was also investigated as a potent interfering agent, and the results have shown that the transformation of the hydroxy to methoxy groups has altered the selectivity of the receptor. This species does not cause interference at concentration levels lower than 10(-6) M. A drop of urine containing ephedrine provided also a "switching on" of the fluorescence, which allows the rapid detection of this stimulant in human urine at the levels of 10(-8) M concentrations. The reproducibility of the method was checked in approximately 100 samples, and all of them were found to provide similar results. Note that the colors of the filters remain stable for periods of more than 2 months.
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Affiliation(s)
- Dimitrios P Nikolelis
- Laboratory of Environmental Analytical Chemistry, Department of Chemistry, University of Athens, Panepistimiopolis-Kouponia, 15771 Athens, Greece
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