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Preparation and electrical conductivity of Langmuir–Blodgett films of poly(3-alkylthiophene)s

✍ Scribed by Yu Xu; Yunqi Liu; Jie Wu; Daoben Zhu

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
299 KB
Volume
69
Category
Article
ISSN
0021-8995

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✦ Synopsis

Five poly(3-alkylthiophene) s (P3ATs) with different alkyl side chains were synthesized. Pure P3ATs alone are not well suited for manipulation by the Langmuir-Blodgett (LB) technique, but their mixed systems with arachidic acid can be used to prepare high-quality Y-type films with the vertical dipping method, which was proved by UV-visible spectra and small-angle X-ray diffraction patterns. Conductivities of the LB films were measured using a two-probe method at room temperature. The conductivities exhibited obvious anisotropy and could increase by 2-4 orders of magnitude after iodine vapor doping. The influence of alkyl chain length on the conductivity in the LB films was revealed.

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