Towards New Oligomesogenic Phosphonic Acids as Stabilizers of Nanoparticles Colloids in Nematic Liquid Crystals
摘要:
Several synthetic strategies for the construction of linear and branched oligomesogenic phosphonic acids are examined, which differ in the method of building the key bimesogen unit. An efficient synthetic approach to the most promising compounds employs regioselective Kumada cross-coupling between [11-(4'-pentylbiphenyl-4-yl)undecyl] magnesium bromide and 4-(11-bromoundecyl)-4'-iodobiphenyl as the key step. Preliminary studies on the ability of the new ligands to stabilize nanoparticles colloids in nematic liquid crystals are undertaken for the example of quantum dots.
Substituted fused heterocyclic compounds of the formula (I) and pharmacologically acceptable salts thereof:
wherein R1 is a group of the formula (II) or (III):
R4 is a substituted phenyl or a pyridyl which may have a substituent. R5 is hydrogen or the like. R6 is hydrogen, a C1-6 alkyl group or the like. D is oxygen or sulfur. E is a CH group or nitrogen. R2 is hydrogen or the like. R3 is a 2,4-dioxothiazolidin-5-ylmethyl group or the like. A is a C1-6 alkylene group. B is oxygen or sulfur. These compounds and salts are useful as the active ingredient of pharmaceutical compositions which can be used to treat patients because these compounds and salts have excellent insulin-resistance improving action, lipid-peroxide-production inhibitory action, 5-lipoxygenase inhibitory action and the like.
New mesogenic compounds exhibiting unique, so called orthoconic, behavior at the synclinic smectic SmC* phase have been obtained.
已获得表现出在同向螺旋相SmC*阶段具有独特的所谓正圆锥行为的新向列相化合物。
중합가능한 화합물 및 액정 디스플레이에서 이의 용도
申请人:MERCK PATENT GMBH 메르크 파텐트 게엠베하(519980656531)
公开号:KR20150110369A
公开(公告)日:2015-10-02
본 발명은, 중합가능한 화합물, 상기 화합물의 제조를 위한 방법 및 중간체, 상기 화합물을 포함하는 액정(LC) 매질, 및 특히 LC 디스플레이에서, 특히 PSA("중합체-지속된 정렬") 유형의 LC 디스플레이에서, 광학, 전광 및 전자 목적을 위한 상기 중합가능한 화합물 및 상기 LC 매질의 용도에 관한 것이다.
Amine derivatives and process for producing the same
申请人:Showa Denko K.K.
公开号:US05166403A1
公开(公告)日:1992-11-24
An amine derivative having a liquid crystal property over a wide temperature range and a process for production thereof are disclosed, the amine derivative being represented by formula (I) ##STR1## wherein A represents ##STR2## X.sub.1 and X.sub.2, which may be the same or different, each represents ##STR3## Y represents --O-- or ##STR4## R.sub.1 and R.sub.3, which may be the same or different, each represents a straight chain or branched chain alkyl group having 1 to 18 carbon atoms; R.sub.2 represents a hydrogen atom or a methyl group; m and n each represents 0 or 1; and p and q each represents 1 or 2, provided that p and q are 1 when n is 0, and p and q are not 2 at the same time when n is 1.
Membrane-Length Amphiphiles Exhibiting Structural Simplicity and Ion Channel Activity
作者:Wei Wang、Ruiqiong Li、George W. Gokel
DOI:10.1002/chem.200900898
日期:2009.10.12
A number of synthetic ionchannels have been reported in recent years that incorporate unusual or sophisticated design elements. The present work demonstrates that extremely simple compounds can function as ionchannels (insert in bilayers, exhibit open–close behavior) if they meet minimum criteria. A simple membrane spanning structure may function as a channel if 1) it possesses polar headgroups (is