Structure and photoconductive behaviour of a sanidic liquid crystal
作者： D. Haristoy , S. Mery , B. Heinrich , L. Mager , J. F. Nicoud
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摘要: A series of [1]benzothieno[3,2-b][1]benzothiophene-2,7-dicarboxylate derivatives consisting a flat, conjugated aromatic moiety containing sulphur hetero-atoms and substituted by terminal chains - ethyl, decyl, Z-4-decenyl or 2-(2-butoxyethoxy)ethyl has been synthesized. These materials exhibit smectic liquid crystalline phase, the stability which was found to be strongly dependent on length nature chains. In mesophase, molecular arrangement within layer is characterized local stacking rigid parts similar that in discotic columnar systems. Finally, clear photoconductive behaviour mechanically aligned samples these crystals.
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