http://www.cnr.it/ontology/cnr/individuo/prodotto/ID47910
Electrochemical, magnetic, and electrical properties of a,w-capped sexithiohene films. 1. Neutral-polaron and polaron-bipolaron conductivities (Articolo in rivista)
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- Label
- Electrochemical, magnetic, and electrical properties of a,w-capped sexithiohene films. 1. Neutral-polaron and polaron-bipolaron conductivities (Articolo in rivista) (literal)
- Anno
- 2005-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1021/cm051798u (literal)
- Alternative label
Zotti G.; Zecchin S.; Vercelli B.; Berlin A.; Grimoldi S.; Pasini M.C.; Raposo M.M.M. (2005)
Electrochemical, magnetic, and electrical properties of a,w-capped sexithiohene films. 1. Neutral-polaron and polaron-bipolaron conductivities
in Chemistry of materials
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Zotti G.; Zecchin S.; Vercelli B.; Berlin A.; Grimoldi S.; Pasini M.C.; Raposo M.M.M. (literal)
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- http://pubs.acs.org (literal)
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- Rivista
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- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- CNR-IENI; CNR-ISTM; CNR-ISMAC; Department of Chemistry, UniVersity of Minho, Portugal (literal)
- Titolo
- Electrochemical, magnetic, and electrical properties of a,w-capped sexithiohene films. 1. Neutral-polaron and polaron-bipolaron conductivities (literal)
- Abstract
- Thin solid films of 14 sexithiophenes variously substituted at the terminal R,?-positions were
electrochemically deposited on electrodes by anodic coupling of the corresponding half-capped
terthiophenes. Sexithiophene films were investigated by cyclic voltammetry, EQCM, in situ ESR, and in
situ conductivity. Reversible oxidation is composed by two separate one-electron steps, the first of which
is split into two 0.5-electron steps for most 3,4-ethylenedioxy-substituted terthiophenes. ESR indicates
strong magnetic dimerization for the one-electron oxidized species. Conductivity (in the range 10-4-
10-1 S cm-1) is redox type and develops at the neutral-cation (neutral-polaron) and cation-dication
(polaron-bipolaron) levels with values 5-10 times higher for the latter. The influence of steric, electron
donor-acceptor, and conjugative effects on conductivity was evaluated by a suitable choice of endcapping
substituents. (literal)
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