Electrochromic Properties of a Polythiophene Bearing Dithiinoquinoxaline Units in the Repeat Unit

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dc.contributor.authorRory Berridge
dc.contributor.authorShaun Wright
dc.contributor.authorPeter Skabara
dc.contributor.authorAubrey L Dyer
dc.contributor.authorTimothy Steckler
dc.contributor.authorAvni Argun
dc.contributor.authorJohn Reynolds
dc.contributor.authorWilliam Clegg
dc.date.accessioned2024-05-08T19:07:41Z
dc.date.available2024-05-08T19:07:41Z
dc.description.abstractThe synthesis and electropolymerisation of a new terthiophene, 1,3-di-2-thienylthieno[3′,4′:5,6][1,4]dithiino[2,3-b]quinoxaline, is reported. The compound bears a quinoxaline unit fused to the central thiophene ring via a 1,4-dithiin ring; the latter unit ensures a non-planar structure for the molecule. The corresponding polymer, prepared electrochemically, has been characterized by cyclic voltammetry and UV-vis-NIR spectroelectrochemistry. The material is oxidised within the conjugated chain, but the reduction processes are complex and arise from both the polythiophene and the independent quinoxaline units. The polymer has two distinct colour states—orange in the neutral form and green–blue in the oxidised state. Electrochromic studies on poly(1,3-di-2-thienylthieno[3′,4′:5,6][1,4]dithiino[2,3-b]quinoxaline) reveal fast switching speeds that are superior to those of poly(3,4-ethylenedioxythiophene) (PEDOT) and a colouration efficiency of 381 cm2 C−1 at 650 nm.
dc.identifier.urihttps://hdl.handle.net/20.500.12951/486
dc.titleElectrochromic Properties of a Polythiophene Bearing Dithiinoquinoxaline Units in the Repeat Unit
dc.typeJournal Article, Professional Journal
dcterms.bibliographicCitationJournal of Materials Chemistry 17, 225, (November 2006)
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