Charge Carrier Transport Properties in Liquid Crystalline 2-Phenylbenzothiazole Derivatives
摘要:
We synthesized liquid crystalline 2-phenylbenzothiazole derivatives and investigated their charge carrier transport properties by time-of-flight experiments. These materials show less ordered phases such as smectic A, smectic C, and nematic phases at temperature range lower than 100 degrees C, and their mobility was relatively small, from 10-5cm2/Vs to 10-4cm2/Vs. In addition, the mobility depends on temperature, while it did not depend on electric fields. According to these results, we estimated the eneregy distribution of density of states responsible for condition, sigma of Gaussian width, to be 78118meV.
[EN] HETEROBICYCLIC SPHINGOSINE 1-PHOSPHATE ANALOGS<br/>[FR] ANALOGUES DE SPHINGOSINE 1-PHOSPHATE HÉTÉROBICYCLIQUE
申请人:BIOGEN IDEC INC
公开号:WO2010051031A1
公开(公告)日:2010-05-06
Compounds that have agonist activity at one or more of the SlP receptors are provided. The compounds are sphingosine analogs that, after phosphorylation, can behave as agonists at SlP receptors.
Optically active compound, liquid crystal composition, liquid crystal
申请人:Canon Kabushiki Kaisha
公开号:US05194177A1
公开(公告)日:1993-03-16
An optically active compound represented by the following formula (I): ##STR1## wherein R.sub.1 denotes a linear or branched alkyl group having 1-18 carbon atoms optionally including one or non-neighboring two or more methylene groups which can be replaced with --X-- or ##STR2## with the proviso that X denotes O or S and Y denotes halogen; R.sub.2 denotes a linear alkyl group having 4-8 carbon atoms: and C* denotes an optically active asymmetric carbon atom. The mesomorphic compound is effective for providing a ferroelectric liquid crystal composition showing improved response characteristics and also effective for suppressing occurrence of reverse domain.
Compounds that have agonist activity at one or more of the S1P receptors are provided. The compounds are sphingosine analogs that, after phosphorylation, can behave as agonists at S1P receptors.
Optically active benzthiazoles, liquid crystal composition, liquid crystal device, display apparatus and display method
申请人:CANON KABUSHIKI KAISHA
公开号:EP0498277A1
公开(公告)日:1992-08-12
An optically active compound represented by the following formula (I):
wherein R₁ denotes a linear or branched alkyl group having 1 - 18 carbon atoms optionally including one or non-neighboring two or more methylene groups which can be replaced with -X- or
with the proviso that X denotes O or S and Y denotes halogen; R₂ denotes a linear alkyl group having 4 - 8 carbon atoms: and C* denotes an optically active asymmetric carbon atom. The mesomorphic compound is effective for providing a ferroelectric liquid crystal composition showing improved response characteristics and also effective for suppressing occurrence of reverse domain.