OPTICALLY-ACTIVE POLYMERS CONTAINING SIDE-CHAIN AZOBENZENE CHROMOPHORES - CHIROPTICAL PROPERTIES AND PHOTOCHROMIC BEHAVIOR OF 4-METHACRYLOXYAZOBENZENE (-)-MENTHYL METHACRYLATE COPOLYMERS

被引：39

作者：

ALTOMARE, A ^{[1
]}

CARLINI, C ^{[1
]}

CIARDELLI, F ^{[1
]}

SOLARO, R ^{[1
]}

机构：

[1] UNIV BOLOGNA,DIPARTIMENTO CHIM IND & MAT,I-40136 BOLOGNA,ITALY

来源：

POLYMER JOURNAL | 1988年 / 20卷 / 09期

关键词：

Benzene; -; Isomerization; Copolymers; Materials; Monomers; Polymerization; Copolymerization;

D O I：

10.1295/polymj.20.801

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Copolymers of trans-4-methacryloxyazobenzene (MAB) with (-)-menthyl methacrylate (MtMA) have been prepared by using AIBN as free radical initiator. The resulting polymer samples are characterized by a substantially random distribution of monomeric co-units, as evaluated from reactivity ratios. Kinetics of photoinduced trans to cis and thermally induced cis to trans back-isomerization of azobenzene side chains have been examined and the relevant kinetic parameters evaluated. Dependence of chiroptical properties on both copolymer composition and extent of cis/trans isomerization has been investigated. The circular dischroism induced on azobenzene chromophores has been shown to arise mainly from isolated MAB units, as the chiral perturbation is not appreciably transmitted along MAB sequences.

引用

页码：801 / 809

页数：9

共 25 条

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