Structure and photoconductive behaviour of a sanidic liquid crystal

被引:27
作者
Haristoy, D
Méry, S
Heinrich, B
Mager, L
Nicoud, JF
Guillon, D
机构
[1] Inst Phys & Chim Mat Strasbourg, Grp Mat Organ, F-67037 Strasbourg, France
[2] Inst Phys & Chim Mat Strasbourg, Opt Nonlineaire & Optoelect Grp, F-67037 Strasbourg, France
关键词
D O I
10.1080/026782900202769
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A series of [1]benzothieno [3,2-b][1] benzothiophene-2,7-dicarboxylate derivatives consisting of 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 a smectic liquid crystalline phase, the stability of which was found to be strongly dependent on the length and the nature of the terminal chains. In the mesophase, the molecular arrangement within the smectic layer is characterized by a local stacking of the rigid parts similar to that found in discotic columnar systems. Finally, clear photoconductive behaviour was found in mechanically aligned samples of these liquid crystals.
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收藏
页码:321 / 328
页数:8
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