Alkylated indacenodithieno[3, 2-b]thiophene-based all donor ladder-type conjugated polymers for organic thin film transistors. Issue 8 (8th February 2018)

• Record Type: Journal Article
• Authors: Lu, Rimei; Han, Yang; Zhang, Weimin; Zhu, Xiuxiu; Fei, Zhuping; Hodsden, Thomas; Anthopoulos, Thomas D.; Heeney, Martin
• Is Part Of: Journal of materials chemistry. Volume 6:Issue 8(2018)
• Page Start: 2004
• Page End: 2009
• Publication Date: 2018-02-08
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c7tc05162j
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Three copolymers based alkylated indacenodithieno[3, 2- b ]thiophene (IDTT) are reported. Abstract : We report the synthesis of a series of indacenodithieno[3, 2- b ]thiophene (IDTT) based conjugated polymers by copolymerization with three different electron rich co-monomers [thiophene (T), thieno[3, 2- b ]thiophene (TT) and dithieno[3, 2- b :2′, 3′- d ]thiophene (DTT)] under Stille coupling conditions. The resulting all-donor polymers show very good solubility in common solvents and exhibit similar optical, thermal and electronic properties. However, the performance of these semiconductors in thin film transistor devices varied and was highly dependent on the nature of the co-monomer. All polymers exhibited unipolar p-type charge transport behaviour, with the mobility values following the trend ofIDTT-TT >IDTT-DTT >IDTT-T . The peak saturation mobility value ofIDTT-TT was extracted to be 1.1 cm 2 V −1 s −1, amongst the highest mobility for all-donor conjugated polymers reported to date.