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Polyterthiophenes Incorporating 3,4‐Difluorothiophene Units: Application in Organic Field‐Effect Transistors
Author(s) -
Crouch David J.,
Sparrowe David,
Heeney Martin,
McCulloch Iain,
Skabara Peter J.
Publication year - 2010
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201000363
Subject(s) - organic field effect transistor , cyclic voltammetry , organic semiconductor , field effect transistor , transistor , polymerization , polymer , materials science , absorption (acoustics) , electrochemistry , polymer chemistry , chloride , chemistry , spectroscopy , analytical chemistry (journal) , optoelectronics , organic chemistry , electrode , voltage , electrical engineering , composite material , engineering , physics , quantum mechanics
Two terthiophenes bearing core fluorinated thienyl units have been synthesised as potential semiconductor materials for organic field‐effect transistors. Polymerisation of these compounds has been achieved using conventional iron(III) chloride oxidative coupling methods and by electrochemical oxidation. Characterisation of the fluorinated materials has been achieved by absorption spectroscopy and cyclic voltammetry. A soluble hexyl‐functionalised polymer (poly 8b ) was used in an OFET device; hole mobilities were measured up to 3 × 10 −3 cm 2 · V −1 · s −1 , and the device had an on/off ratio of 10 5 and a turn‐on voltage of +4 V.