Aldol polymerization as a novel polyaddition based on Mukaiyama aldol reaction and its application to the synthesis of optically active polymer
作者:Kenichi Komura、Shinichi Itsuno、Koichi Ito
DOI:10.1039/a808357f
日期:——
Repetitive Mukaiyama aldol reaction between bis(silyl ketene acetal) and dialdehyde proceeded in the presence of Lewis acid to afford poly(hydroxy ester).
Liquid crystal photoalignment agent and liquid crystal display including the same
申请人:Samsung Display Co., Ltd.
公开号:US11156874B2
公开(公告)日:2021-10-26
A liquid crystal photoalignment agent includes: a copolymer of diamine and dianhydride; and a compound Formula 1 below, wherein an amount of the compound of Formula 1 is less than about 10 weight %, based on a total weight of the liquid crystal photoalignment agent:
R1 is a substituted or unsubstituted tetravalent organic group derived from an acid dianhydride, wherein the acid dianhydride is at least one of an aliphatic cyclic acid dianhydride or an aromatic acid dianhydride, R2 is a substituted or unsubstituted trivalent organic group derived from an aromatic diamine, at least one of R1 and R2 is substituted with CF3 or a silyl group, R3 is a residue of a compound including a substituted or unsubstituted aromatic group with a carbon number that is equal to or greater than 6, n is 1 to 5, and * represents a point of attachment.
LIQUID CRYSTAL PHOTOALIGNMENT AGENT AND LIQUID CRYSTAL DISPLAY INCLUDING THE SAME
申请人:Samsung Display Co., Ltd.
公开号:US20200073182A1
公开(公告)日:2020-03-05
A liquid crystal photoalignment agent includes: a copolymer of diamine and dianhydride; and a compound Formula 1 below, wherein an amount of the compound of Formula 1 is less than about 10 weight %, based on a total weight of the liquid crystal photoalignment agent:
R
1
is a substituted or unsubstituted tetravalent organic group derived from an acid dianhydride, wherein the acid dianhydride is at least one of an aliphatic cyclic acid dianhydride or an aromatic acid dianhydride, R
2
is a substituted or unsubstituted trivalent organic group derived from an aromatic diamine, at least one of R
1
and R
2
is substituted with CF
3
or a silyl group, R
3
is a residue of a compound including a substituted or unsubstituted aromatic group with a carbon number that is equal to or greater than 6, n is 1 to 5, and * represents a point of attachment.
Suzuki, Tsuneo; Tanemura, Kiyoshi; Horaguchi, Takaaki, Journal of Chemical Research, Miniprint, 1996, # 3, p. 735 - 784