Synthesis, characterization and comparative OFET behaviour of indenofluorene-bithiophene and terthiophene alternating copolymers

Sonar, P., Oldridge, L., Grimsdale, A. C., Müllen, K., Surin, M., Lazzaroni, R., Leclère, P., Pinto, J., Chua, L. L., Sirringhaus, H., & Friend, R. H. (2010) Synthesis, characterization and comparative OFET behaviour of indenofluorene-bithiophene and terthiophene alternating copolymers. Synthetic Metals, 160(5-6), pp. 468-474.

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The synthesis of alternating copolymers of tetraalkylindenofluorene with bithiophene and terthiophene using Suzuki polycondensation route is reported. We report on the optical and electrochemical properties of these copolymers. AFM analysis of the microscopic morphology of thin deposits showed that the copolymer with terthiophene units produced the more ordered films, with well-defined fibrillar structures, resulting from highly-regular dense packing due to strong π-π interchain interactions, in contrast to the amorphous bithiophene copolymer. Upon testing these materials in FETs the terthienyl copolymers displayed the higher charge mobilities among the studied compounds, with values of over 10-4 cm2 V-1 s-1 being obtained.

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5 citations in Scopus
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6 citations in Web of Science®

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ID Code: 75244
Item Type: Journal Article
Refereed: Yes
Keywords: Carrier Mobility, Charge, Indenofluorene copolymers, Microscopic Morphology, Semiconducting Materials, AFM, Alternating copolymer, Bithiophenes, Charge mobilities, Dense packing, Fibrillar structures, Interchain interactions, Suzuki polycondensation, Terthiophenes, Amorphous films, Copolymerization, Copolymers, Electrochemical properties, Materials testing, Morphology, Optical properties, Organic polymers, Plastic products, Polycondensation
DOI: 10.1016/j.synthmet.2009.11.033
ISSN: 03796779 (ISSN)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Crown Copyright © 2009
Deposited On: 29 Oct 2014 05:14
Last Modified: 30 Oct 2014 02:44

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