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Filhol JS, Deschamps J, Dutremez SG, Boury B, Barisien T, Legrand L, Schott M. Polymorphs and Colors of Polydiacetylenes: A First Principles Study. J Am Chem Soc 2009; 131:6976-88. [DOI: 10.1021/ja803768u] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jean-Sébastien Filhol
- Institut Charles Gerhardt Montpellier, UMR 5253 CNRS-UM2-ENSCM-UM1, Université Montpellier 2, Place E. Bataillon, 34095 Montpellier Cedex 5, France, and Institut des Nanosciences de Paris - UMR CNRS 7588-UPMC, Université Pierre et Marie Curie-Paris 6, Campus Boucicaut, 140 rue de Lourmel, 75015 Paris, France
| | - Jérôme Deschamps
- Institut Charles Gerhardt Montpellier, UMR 5253 CNRS-UM2-ENSCM-UM1, Université Montpellier 2, Place E. Bataillon, 34095 Montpellier Cedex 5, France, and Institut des Nanosciences de Paris - UMR CNRS 7588-UPMC, Université Pierre et Marie Curie-Paris 6, Campus Boucicaut, 140 rue de Lourmel, 75015 Paris, France
| | - Sylvain G. Dutremez
- Institut Charles Gerhardt Montpellier, UMR 5253 CNRS-UM2-ENSCM-UM1, Université Montpellier 2, Place E. Bataillon, 34095 Montpellier Cedex 5, France, and Institut des Nanosciences de Paris - UMR CNRS 7588-UPMC, Université Pierre et Marie Curie-Paris 6, Campus Boucicaut, 140 rue de Lourmel, 75015 Paris, France
| | - Bruno Boury
- Institut Charles Gerhardt Montpellier, UMR 5253 CNRS-UM2-ENSCM-UM1, Université Montpellier 2, Place E. Bataillon, 34095 Montpellier Cedex 5, France, and Institut des Nanosciences de Paris - UMR CNRS 7588-UPMC, Université Pierre et Marie Curie-Paris 6, Campus Boucicaut, 140 rue de Lourmel, 75015 Paris, France
| | - Thierry Barisien
- Institut Charles Gerhardt Montpellier, UMR 5253 CNRS-UM2-ENSCM-UM1, Université Montpellier 2, Place E. Bataillon, 34095 Montpellier Cedex 5, France, and Institut des Nanosciences de Paris - UMR CNRS 7588-UPMC, Université Pierre et Marie Curie-Paris 6, Campus Boucicaut, 140 rue de Lourmel, 75015 Paris, France
| | - Laurent Legrand
- Institut Charles Gerhardt Montpellier, UMR 5253 CNRS-UM2-ENSCM-UM1, Université Montpellier 2, Place E. Bataillon, 34095 Montpellier Cedex 5, France, and Institut des Nanosciences de Paris - UMR CNRS 7588-UPMC, Université Pierre et Marie Curie-Paris 6, Campus Boucicaut, 140 rue de Lourmel, 75015 Paris, France
| | - Michel Schott
- Institut Charles Gerhardt Montpellier, UMR 5253 CNRS-UM2-ENSCM-UM1, Université Montpellier 2, Place E. Bataillon, 34095 Montpellier Cedex 5, France, and Institut des Nanosciences de Paris - UMR CNRS 7588-UPMC, Université Pierre et Marie Curie-Paris 6, Campus Boucicaut, 140 rue de Lourmel, 75015 Paris, France
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Kew SJ, Hall EAH. Triggering blue–red transition response in polydiacetylene vesicles: an electrochemical surface plasmon resonance method. Analyst 2007; 132:801-10. [PMID: 17646880 DOI: 10.1039/b704921h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electrochemical surface plasmon resonance (E-SPR) was used to investigate whether the chromic properties of a polydiacetylene (PDA) vesicle films, adsorbed onto an ultra-thin gold electrode, could be triggered by applied potential. This approach constitutes a preliminary model for a novel approach to the use of a triggered chromic transition, as an indicator of biorecognition headgroup binding in these materials. A PDA chromic blue-red transition was identified in E-SPR against the background Deltaepsilon(e) and Deltaepsilon(m). The latter resulted in a ca. 100 mDeg V(-1) shift in the SPR minimum, in the presence of PDA, with the PDA shielding changes in epsilon(e). Electrochemical charge transfer processes in the pre-oxide/oxide anodic region with adsorbed oxygen and hydroxide, involving a change in Au redox state (Au(0)/Au(+)) were visible in the SPR, due to a change in the gold layer thickness and gold oxide layer. However, the cathodic processes, not involving a change in the Au redox state or a increase/decrease in the surface layer dielectric, did not cause a change in the SPR. Based on this, dramatic changes in the optical properties of the adsorbed PDA film could be triggered at an applied cathodic potential, and were identified using SPR. These correlated with a pH-induced chromic transition. Both protonation and ion binding, linked with headgroup environment, were implicated in causing structural transitions in the adsorbed vesicle layer that may also be linked with their bulk optical properties.
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Affiliation(s)
- Simon J Kew
- Institute of Biotechnology, University of Cambridge, Tennis Court Road, UK CB2 1QT
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