Synthesis, physical properties and field-effect transistors of novel thiazolothiazole–phenylene co-oligomers?

Journal of Materials Chemistry Pub Date: 2006-11-20 DOI: 10.1039/B611814C

Abstract

A series of thiazolothiazole–phenylene co-oligomers was synthesized and their properties, particularly as semiconductors for OFETs, were investigated. The naphthyl and biphenyl- substituted derivatives showed p-type semiconducting behavior with hole mobilities ranging from 10?2 to 10?1 cm2 V?1 s?1. The hole mobility and on/off ratio were enhanced to 0.12 cm2 V?1 s?1 and 106 on the HMDS treated substrate. The introduction of phenyl groups as end substituents was found to be favorable for charge transport and air-stability.

Graphical abstract: Synthesis, physical properties and field-effect transistors of novel thiazolothiazole–phenylene co-oligomers
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