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Koizumi TA, Hayashi H, Shiozaki S, Yamamoto T. [Ru(bpy) 2 (bqdiBr 2 )](PF 6 ) 2 bearing a 3,6-dibromo-1,2-benzoquinone diimine ligand (bqdiBr 2 = Br-C 6 H 2 (NH) 2 -Br): Synthesis and its cross coupling reactions with organostannanes and organoboronic acids. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.06.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Dennany L, Innis PC, McGovern ST, Wallace GG, Forster RJ. Electronic interactions within composites of polyanilines formed under acidic and alkaline conditions. Conductivity, ESR, Raman, UV-vis and fluorescence studies. Phys Chem Chem Phys 2011; 13:3303-10. [DOI: 10.1039/c0cp00699h] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Spain E, Kojima R, Kaner RB, Wallace GG, O’Grady J, Lacey K, Barry T, Keyes TE, Forster RJ. High sensitivity DNA detection using gold nanoparticle functionalised polyaniline nanofibres. Biosens Bioelectron 2011; 26:2613-8. [DOI: 10.1016/j.bios.2010.11.017] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2010] [Revised: 11/11/2010] [Accepted: 11/12/2010] [Indexed: 02/08/2023]
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Dennany L, Innis PC, Masdarolomoor F, Wallace GG. ESR, Raman, and Conductivity Studies on Fractionated Poly(2-methoxyaniline-5-sulfonic acid). J Phys Chem B 2010; 114:2337-41. [DOI: 10.1021/jp908005m] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lynn Dennany
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM Facility, Innovation Campus, University of Wollongong, NSW 2522, Australia
| | - Peter C. Innis
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM Facility, Innovation Campus, University of Wollongong, NSW 2522, Australia
| | - Fatemeh Masdarolomoor
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM Facility, Innovation Campus, University of Wollongong, NSW 2522, Australia
| | - Gordon G. Wallace
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, AIIM Facility, Innovation Campus, University of Wollongong, NSW 2522, Australia
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Dennany L, Wallace GG, Forster RJ. Luminescent metal complexes within polyelectrolyte layers: tuning electron and energy transfer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:14053-14060. [PMID: 19601581 DOI: 10.1021/la901661v] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The electrochemical and photophysical properties of a luminescent metal center, [Os(bpy)(3)](2+), are significantly modified by encapsulation within a conducting polymer composite film. Cyclic voltammetry reveals that the encapsulation in an inherently conducting polymer, polyaniline (Pani) or polypyrrole (PPy), can dramatically influence the charge-transfer rates between the metal centers. The increased electron transport, most likely mediated through the conducting polymer backbone, significantly enhances the electrochemiluminescence (ECL) efficiency. The increased communication between adjacent metal centers can also result in other interesting properties, such as photoinduced electron-transfer processes. In situ electron spin resonance (ESR) spectroscopy has been used to probe the photo-oxidation of an osmium metal center encapsulated in a PPy composite film. The irradiation of PPy in the presence of the osmium metal center resulted in the photo-oxidation of the Os(2+) to Os(3+) state and the consequent reduction of the PPy polyelectrolyte. The degree of communication between luminescent metal centers allows the composite properties to be tuned for various applications including ECL sensor devices and light-switching and light-harvesting systems.
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Affiliation(s)
- Lynn Dennany
- Intelligent Polymer Research Institute and ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus, University of Wollongong, Fairy Meadow, NSW 2519, Australia.
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He S, Dennis AE, Smith RC. Steric Coordination Control of Interchain Interactions in Conducting Metallopolymers. Macromol Rapid Commun 2009; 30:2079-83. [DOI: 10.1002/marc.200900388] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2009] [Revised: 08/04/2009] [Indexed: 11/06/2022]
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Mishra A, Ma CQ, Bäuerle P. Functional Oligothiophenes: Molecular Design for Multidimensional Nanoarchitectures and Their Applications. Chem Rev 2009; 109:1141-276. [DOI: 10.1021/cr8004229] [Citation(s) in RCA: 1228] [Impact Index Per Article: 81.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Amaresh Mishra
- Institute of Organic Chemistry II and Advanced Materials, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Chang-Qi Ma
- Institute of Organic Chemistry II and Advanced Materials, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Peter Bäuerle
- Institute of Organic Chemistry II and Advanced Materials, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
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Fischer MKR, Ma CQ, Janssen RAJ, Debaerdemaeker T, Bäuerle P. Core-functionalized dendritic oligothiophenes—novel donor–acceptor systems. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b904243a] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Dennany L, Innis PC, Wallace GG, Forster RJ. Reversible Photoinduced Electron Transfer in a Ruthenium Poly(2-methoxyaniline-5-sulfonic acid) Composite Film. J Phys Chem B 2008; 112:12907-12. [DOI: 10.1021/jp804213r] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lynn Dennany
- Intelligent Polymer Research Institute and ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Northfields Avenue, Wollongong NSW 2522, Australia, and Biomedical Diagnostics Institute, National Centre for Sensor Research, School of Chemical Sciences, Dublin City University, Dublin 9, Ireland
| | - Peter C. Innis
- Intelligent Polymer Research Institute and ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Northfields Avenue, Wollongong NSW 2522, Australia, and Biomedical Diagnostics Institute, National Centre for Sensor Research, School of Chemical Sciences, Dublin City University, Dublin 9, Ireland
| | - Gordon G. Wallace
- Intelligent Polymer Research Institute and ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Northfields Avenue, Wollongong NSW 2522, Australia, and Biomedical Diagnostics Institute, National Centre for Sensor Research, School of Chemical Sciences, Dublin City University, Dublin 9, Ireland
| | - Robert J. Forster
- Intelligent Polymer Research Institute and ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Northfields Avenue, Wollongong NSW 2522, Australia, and Biomedical Diagnostics Institute, National Centre for Sensor Research, School of Chemical Sciences, Dublin City University, Dublin 9, Ireland
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Solvent-free, oxidatively prepared polythiophene: High specific capacity as a cathode active material for lithium batteries. REACT FUNCT POLYM 2008. [DOI: 10.1016/j.reactfunctpolym.2008.07.001] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Affiliation(s)
- Ling Li
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400
| | - David M. Collard
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400
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Zade SS, Bendikov M. Theoretical Study of Long Oligothiophene Dications: Bipolaron vs Polaron Pair vs Triplet State. J Phys Chem B 2006; 110:15839-46. [PMID: 16898734 DOI: 10.1021/jp062748v] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A series of oligothiophene dications (from the sexithiophene dication to the 50-mer oligothiophene dication, nT2+, n = 6-50) were studied. Density functional theory (DFT) at the B3LYP/6-31G(d) level and, in some cases, also at BLYP/6-31Gd, was applied to study the singlet and triplet states of the whole series. We found that the singlet state is the ground state for all oligothiophene dications up to the 20-mer, and that the singlet and triplet states are degenerate for longer oligomers. Thus, the triplet state is never a pure ground state for these dications. We found that, for short oligothiophenes dication (e.g., 6T2+), the bipolaron state is the more important state, with only a small contribution made by the polaron pair state. For medium size oligothiophene dications (e.g., 14T2+), both the bipolaron state and the polaron-pair state contribute to the electronic structure. Finally, in long oligothiophene dications, such as 30T2+ and 50T2+, the contribution from the polaron pair state becomes dominant, and these molecules can be considered as consisting of two independent cation radicals or a polaron pair. Results from isodesmic reactions show that the stability of oligothiophene cation radicals over dications is inversely proportional to chain length. Small oligothiophene dications (n = 6-12) were studied at the CASSCF(m,m)/6-31G(d) (m = 4, 6, and 10) level. The major conclusions of this paper regarding the relative energy of the singlet state versus the triplet state and regarding the relative stability of the bipolaron versus the polaron pair were also supported by CASSCF calculations.
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Affiliation(s)
- Sanjio S Zade
- Department of Organic Chemistry, Weizmann Institute of Science, 76100 Rehovot, Israel
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