Columnar mesophase from a new disclike mesogen based on a 3,5-dicyano-2,4,6-tristyrylpyridine core

被引:87
作者
Attias, A
Cavalli, C
Donnio, B
Guillon, D
Hapiot, P
Malthête, J
机构
[1] Univ Paris 06, UMR 7610, F-75252 Paris 05, France
[2] Off Natl Etud & Rech Aerosp, Dept Mat & Syst Composites, F-92322 Chatillon, France
[3] Univ Strasbourg 1, Grp Mat Organ, Inst Phys & Chim Mat Strasbourg, UMR 7504,CNRS, F-67037 Strasbourg, France
[4] Univ Rennes 1, UMR 6510, F-35042 Rennes, France
[5] Inst Curie, Sect Rech, UMR 168, F-75248 Paris 05, France
关键词
D O I
10.1021/cm010725h
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We report on the design and synthesis of a new disclike mesogen based on a 3,5-dicyano-2,4,6-tristyrylpyridine core. This compound was characterized by spectroscopic methods (NMR, UV-vis, and photoluminescence) and cyclic voltammetry. The mesogenic behavior was investigated by differential scanning calorimetry, polarized-light optical microscopy, and X-ray diffraction. The disclike structure self-assembles into a hexagonal columnar mesophase and, because of the permanent dipole exhibited by the isolated molecule, the stacking along the columnar axis is antiparallel. Besides two-dimensional charge transfer and fluorescence, the disclike molecule exhibits high electron affinity as a result of the strong acceptor character of the 3,5-dicyanopyridine core.
引用
收藏
页码:375 / 384
页数:10
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