申请人:——
公开号:US04933104A1
公开(公告)日:1990-06-12
A novel anthraquinone derivative is proposed, of the general formula ##STR1## where A,B,D are simultaneously or independently groups --NHCOR.sup.1, --NHCOAlk, --OCOAlk, --OCOR.sup.1, --OH, --OAlk, --NHAlk, H, wherein R.sup.1 is groups ##STR2## R.sup.4 is groups ##STR3## where Alk=C.sub.1 -C.sub.18 ; R.sup.5 is groups ##STR4## where Alk=C.sub.1 -C.sub.18 ; R.sup.6 is hydrogen or --Alk=C.sub.1 -C.sub.8 ; R.sup.7 -Alkyl=C.sub.1 -C.sub.8 ; R.sup.2, R.sup.3 are groups --Alk, --OAlk, --SAlk, where Alk=C.sub.1 -C.sub.8 or R.sup.3 - H, as a dichroic dye with negative dichrosim for a liquid-crystal material. Also proposed is a liquid-crystalline material containing a liquid-crystalline matrix and a dichroic dye representing at least one anthraquinone derivative of general formula /1/ taken in amount 1-15 mass %. An electrooptical device is proposed with a dichroic working body (1) made of said liquid-crystal material placed between transparent plates (2) on the inner sides of which electrodes (3) are located, fitted with conductors (6) connected to a power supply.
提出了一种新的蒽醌衍生物,其一般化学式为##STR1##其中A、B、D同时或独立地是基团--NHCOR.sup.1、--NHCOAlk、--OCOAlk、--OCOR.sup.1、--OH、--OAlk、--NHAlk、H,其中R.sup.1是基团##STR2##R.sup.4是基团##STR3##其中Alk=C.sub.1 -C.sub.18;R.sup.5是基团##STR4##其中Alk=C.sub.1 -C.sub.18;R.sup.6是氢原子或--Alk=C.sub.1 -C.sub.8;R.sup.7 -Alkyl=C.sub.1 -C.sub.8;R.sup.2、R.sup.3是基团--Alk、--OAlk、--SAlk,其中Alk=C.sub.1 -C.sub.8或R.sup.3 - H,作为一种具有负二色性的二色性染料,用于液晶材料。还提出了一种含有液晶基体和至少一种蒽醌衍生物的二色性染料的液晶材料,其通式为/1/,含量为1-15质量%。提出了一种电光设备,其具有由所述液晶材料制成的二色性工作体(1),位于透明板(2)之间的内侧,电极(3)位于透明板上,配有连接到电源的导体(6)。