申请人:Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung E.V.
公开号:US09273247B2
公开(公告)日:2016-03-01
The invention relates to the use of a substituted, chiral amino alcohol, comprising one or more structural units of the following formula (1), wherein the abbreviations A, Y, R1 and R3 to R5 have the following meanings: is a covalent bond or a hydrocarbon group, Y is a covalent bond or a hydrocarbon group that can have an oxygen atom at one of its ends through which it is bonded to R1, R1 is an aliphatic or heterocyclic or aromatic radical, the carbon chain of which may be interrupted by one or more B groups, R5 is selected from the group consisting of (a) aliphatic radicals, wherein individual carbon atoms may be replaced by oxygen atoms or carbonyl groups, and wherein the carbon chains of same radicals may be optionally interrupted by a B group, and (b) araliphatic, cycloaliphatic, aromatic and heterocyclic radicals, wherein the carbon chain can be interrupted by one or more B structural elements and/or by one or more D coupling groups, R3, R4 are hydrogen or aliphatic or araliphatic substituents, which are independent of one another, wherein the carbon chain can be interrupted by one or more B groups, B is selected from polymerizable or crosslinkable structural elements from the group comprising C1-C16-alkenyl, C1-C16-alkenyloxy, —C═C—, —CH═CH—COO—, —CH═CH—, —CX═CH—COO— with X═C1-C16-alkyl, and the trans-form of —OOC—CH═CH—COO—, and D is selected from —O—, —NH—, —N(CH3)—, —N(C2H5)—, —SO2—, —CO—, —COO—, —CH═CH—, —OCOO—, —OCH2—, CH═N, —CF2CF2—, as a chiral dopant in liquid crystal (mixtures), e.g., in electro-optical systems.
该发明涉及使用一种取代的手性氨基醇,包括以下式(1)的一个或多个结构单元,其中缩写A、Y、R1和R3至R5具有以下含义:A是共价键或碳氢基团,Y是共价键或碳氢基团,可以在其一端具有氧原子,通过该氧原子与R1键合,R1是脂肪族、杂环或芳香基,其碳链可能被一个或多个B基团中断,R5选自以下组成的群体:(a)脂肪基,其中个别碳原子可被氧原子或羰基取代,同一基团的碳链可能选择性地被B基团中断;(b)芳基脂肪族、环脂肪族、芳香和杂环基,其碳链可被一个或多个B结构元素和/或一个或多个D偶联基中断,R3、R4是氢或脂肪族或芳基脂肪族取代基,彼此独立,其碳链可能被一个或多个B基团中断,B选自以下群体中的可聚合或可交联的结构单元:C1-C16-烯基、C1-C16-烯氧基、—C═C—、—CH═CH—COO—、—CH═CH—、—CX═CH—COO—,其中X=C1-C16-烷基,以及—OOC—CH═CH—COO—的反式形式,D选自—O—、—NH—、—N(CH3)—、—N(C2H5)—、—SO2—、—CO—、—COO—、—CH═CH—、—OCOO—、—OCH2—、CH═N、—CF2CF2—,作为液晶(混合物)中的手性掺杂剂,例如在电光系统中。