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Deng J, Liu M, Lin F, Zhang Y, Liu Y, Yao S. Self-assembled oligo(phenylene ethynylene)s/graphene nanocomposite with improved electrochemical performances for dopamine determination. Anal Chim Acta 2013; 767:59-65. [PMID: 23452787 DOI: 10.1016/j.aca.2012.12.051] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Revised: 12/28/2012] [Accepted: 12/31/2012] [Indexed: 12/01/2022]
Abstract
In this work, a novel 1,4-bis (4- aminophenylethynyl)benzene (OPE-NH2, a symmetric linear conjugated oligo(phenylene ethynylene)s derive) and chemically-reduced graphene oxide (rGO) nanocomposite (OPE-NH2/rGO) was synthesized by a simple self-assembly method. The OPE-NH2/rGO nanocomposite was stable and water soluble. The formation of OPE-NH2/rGO nanocomposite was ascribed to the π-π stacking interaction between the conjugated structure of OPE-NH2 and rGO as well as the electrostatic force between the amino group of OPE-NH2 and the carboxyl group on rGO, which was characterized by FT-IR, UV-vis spectra and fluorescence spectra. The OPE-NH2/rGO nanocomposite exhibited significantly improved electrocatalytic activity to the oxidization of dopamine (DA) than that of rGO or OPE-NH2. The electrochemical performances of OPE-NH2/rGO were dependent on the OPE-NH2 contents, and OPE-NH2 content of 5wt% exhibited the highest activity. Compared with that of rGO, the nanocomposite presented superior high sensitivity with detection limit of 5nM, excellent selectivity, wide linear range (0.01-60μM) and good stability on the determination of DA. The practical application of the developed OPE-NH2/rGO nanocomposite modified electrode was successfully demonstrated for DA determination in human serum samples.
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Affiliation(s)
- Jianhui Deng
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
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Gard MN, Zucchero AJ, Kuzmanich G, Oelsner C, Guldi D, Dreuw A, Bunz UHF, Garcia-Garibay MA. Cruciforms’ Polarized Emission Confirms Disjoint Molecular Orbitals and Excited States. Org Lett 2012; 14:1000-3. [DOI: 10.1021/ol203321m] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matthew N. Gard
- Department of Chemistry, University of California, Los Angeles, California 90095-1559, United States, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States, Department of Chemistry and Pharmacy & Interdisciplinary Center of Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstr. 3, 91054 Erlangen, Germany, Interdisciplinary Center for Scientific Computing, Ruprecht-Karls Universität, Im Neuenheimer Feld 368, 69120
| | - Anthony J. Zucchero
- Department of Chemistry, University of California, Los Angeles, California 90095-1559, United States, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States, Department of Chemistry and Pharmacy & Interdisciplinary Center of Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstr. 3, 91054 Erlangen, Germany, Interdisciplinary Center for Scientific Computing, Ruprecht-Karls Universität, Im Neuenheimer Feld 368, 69120
| | - Gregory Kuzmanich
- Department of Chemistry, University of California, Los Angeles, California 90095-1559, United States, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States, Department of Chemistry and Pharmacy & Interdisciplinary Center of Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstr. 3, 91054 Erlangen, Germany, Interdisciplinary Center for Scientific Computing, Ruprecht-Karls Universität, Im Neuenheimer Feld 368, 69120
| | - Christian Oelsner
- Department of Chemistry, University of California, Los Angeles, California 90095-1559, United States, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States, Department of Chemistry and Pharmacy & Interdisciplinary Center of Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstr. 3, 91054 Erlangen, Germany, Interdisciplinary Center for Scientific Computing, Ruprecht-Karls Universität, Im Neuenheimer Feld 368, 69120
| | - Dirk Guldi
- Department of Chemistry, University of California, Los Angeles, California 90095-1559, United States, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States, Department of Chemistry and Pharmacy & Interdisciplinary Center of Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstr. 3, 91054 Erlangen, Germany, Interdisciplinary Center for Scientific Computing, Ruprecht-Karls Universität, Im Neuenheimer Feld 368, 69120
| | - Andreas Dreuw
- Department of Chemistry, University of California, Los Angeles, California 90095-1559, United States, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States, Department of Chemistry and Pharmacy & Interdisciplinary Center of Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstr. 3, 91054 Erlangen, Germany, Interdisciplinary Center for Scientific Computing, Ruprecht-Karls Universität, Im Neuenheimer Feld 368, 69120
| | - Uwe H. F. Bunz
- Department of Chemistry, University of California, Los Angeles, California 90095-1559, United States, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States, Department of Chemistry and Pharmacy & Interdisciplinary Center of Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstr. 3, 91054 Erlangen, Germany, Interdisciplinary Center for Scientific Computing, Ruprecht-Karls Universität, Im Neuenheimer Feld 368, 69120
| | - Miguel A. Garcia-Garibay
- Department of Chemistry, University of California, Los Angeles, California 90095-1559, United States, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States, Department of Chemistry and Pharmacy & Interdisciplinary Center of Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstr. 3, 91054 Erlangen, Germany, Interdisciplinary Center for Scientific Computing, Ruprecht-Karls Universität, Im Neuenheimer Feld 368, 69120
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Zhou N, Wang L, Thompson DW, Zhao Y. H-Shaped OPE/OPV Oligomers: A New Member of 2D-Conjugated Fluorophore Cores. Org Lett 2008; 10:3001-4. [DOI: 10.1021/ol8009623] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Ningzhang Zhou
- Department of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland A1B 3X7, Canada
| | - Li Wang
- Department of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland A1B 3X7, Canada
| | - David W. Thompson
- Department of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland A1B 3X7, Canada
| | - Yuming Zhao
- Department of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland A1B 3X7, Canada
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