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Issue 20, 2013
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A water-soluble polythiophene for organic field-effect transistors

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Synthesis of a non-ionic, water-soluble poly(thiophene) (PT) derivative, poly(3-(2-(2-(2-methoxyethoxy)ethoxy)ethoxy)methylthiophene) (P3TEGT) with a hydrophilic tri-ethylene glycol side group, is reported and thin films of the polymer suitable for organic field-effect transistors (OFETs) are characterized by combining analysis techniques that include UV-Vis absorption and fluorescence spectroscopy, X-ray diffraction, and atomic force microscopy. After thermal annealing, P3TEGT films exhibit a well-organized nanofibrillar lamellar nanostructure that originates from the strong π–π stacking of the thiophene backbones. P-type organic field-effect transistors (OFETs) with hole mobilities of 10−5 cm2 V−1 s−1 were fabricated from this water-soluble poly(thiophene) derivative, demonstrating the possibility that environmentally friendly solvents may be promising alternatives for the low-cost, green solvent processed organic electronic device manufacturing of OFETs, organic photovoltaics (OPVs), and biosensors.

Graphical abstract: A water-soluble polythiophene for organic field-effect transistors

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Article information

22 Nov 2012
20 Dec 2012
First published
21 Dec 2012

Polym. Chem., 2013,4, 5270-5274
Article type

A water-soluble polythiophene for organic field-effect transistors

M. Shao, Y. He, K. Hong, C. M. Rouleau, D. B. Geohegan and K. Xiao, Polym. Chem., 2013, 4, 5270
DOI: 10.1039/C2PY21020G

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