Substituent modification of electro-optic chromophores with 4-cyano-5-dicyanomethylene-2,5-dihydro-1H-pyrrol-2-one as an acceptor
摘要:
Electro-optic chromophores with 4-cyano-5-dicyanomethylene-2,5-dihydro-1H-pyrrol-2-one (CDCOP) and aniline moieties as an acceptor and a donor, respectively, were synthesized with modification of three substituents, among which two were attached to the aniline moiety (R) and one was introduced to the CDCOP ring (R). Butyl and hexyl groups were introduced as R and R, and higher melting points were observed when R and R were the same. For the chromophore fixation, thermal crosslinking based on cyanate trimerization was performed. The chromophore with cyanate moiety in R was combined with bisphenol A dicyanate, and the thermal chromophore fixation was confirmed with almost no chromophore degradation.
A process for the preparation of functional molecules using the thiol-ene coupling reaction and a process for the preparation of protected functional thiols, specifically thioesters is provided. The methods may be used to make functional polymers and other molecules. The method of making a functionalized polymer using a thiol-ene reaction comprises: providing a functionalized thioester having the following formula:
wherein R is a functional group and COR′ is a protecting group; cleaving the functionalized thioester, forming a functional thiol and an acyl group; providing a polymer having a pendant vinyl group; and reacting the polymer with the functional thiol whereby a functionalized polymer is formed, wherein the functional thiol is not isolated prior to reacting with the polymer.
Chemische Konstitution und lokalanästhetische Wirkung bei Alkaminestern von p-Oxybenzoesäureäthern
作者:C. Rohmann、B. Scheurle
DOI:10.1002/ardp.19362740204
日期:——
US7847019B2
申请人:——
公开号:US7847019B2
公开(公告)日:2010-12-07
US8283438B2
申请人:——
公开号:US8283438B2
公开(公告)日:2012-10-09
[EN] FUNCTIONALIZED POLYMERS USING PROTECTED THIOLS<br/>[FR] POLYMÈRES FONCTIONNALISÉS UTILISANT DES THIOLS PROTÉGÉS
申请人:CALIFORNIA INST OF TECHN
公开号:WO2009052148A1
公开(公告)日:2009-04-23
A process for the preparation of functional molecules using the thiol-ene coupling reaction and a process for the preparation of protected functional thiols, specifically thioesters is provided. The methods may be used to make functional polymers and other molecules. The method of making a functionalized polymer using a thiol-ene reaction comprises: providing a functionalized thioester having the following formula: (I) wherein R is a functional group and COR' is a protecting group; cleaving the functionalized thioester, forming a functional thiol and an acyl group; providing a polymer having a pendant vinyl group; and reacting the polymer with the functional thiol whereby a functionalized polymer is formed, wherein the functional thiol is not isolated prior to reacting with the polymer.