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Hexathienocoronenes: Synthesis and Self-Organization

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posted on 31.10.2012, 00:00 by Long Chen, Sreenivasa R. Puniredd, Yuan-Zhi Tan, Martin Baumgarten, Ute Zschieschang, Volker Enkelmann, Wojciech Pisula, Xinliang Feng, Hagen Klauk, Klaus Müllen
Here we report hexathienocoronenes (HTCs), fully thiophene-annelated coronenes in which six double bonds in the periphery are thieno-fused. The derivatives tetrasubstituted with hexyl and dodecyl chains show a phase formation that strongly depends on the chain length. HTCs are remarkably stronger donors than the known thiophene-annelated coronenes but do not readily assemble into well-ordered films when deposited from the vapor phase. Thus, thin-film transistors fabricated by vacuum deposition have only modest field-effect mobilities of 0.002 cm2 V–1 s–1.

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