Synthesis, chiroptical properties and photoresponsive behaviour of optically active poly[(S)-4-(2-methacryloyloxypropanoyloxy)azobenzene]

被引：63

作者：

Angiolini, L

Caretti, D

Giorgini, L

Salatelli, E

Altomare, A

Carlini, C

Solaro, R

机构：

[1] Univ Pisa, Dipartimento Chim & Chim Ind, I-56126 Pisa, Italy

[2] Univ Bologna, Dipartimento Chim Ind & Mat, I-40136 Bologna, Italy

来源：

POLYMER | 1998年 / 39卷 / 25期

关键词：

photochromic chiral polymers; azobenzene-containing polymers; photoresponsive properties;

D O I：

10.1016/S0032-3861(98)00161-X

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A novel optically active monomer containing a photochromic chromophore, such as trans-(S)-4-(2methacryloyloxypropanoyloxy)azobenzene and its low molecular weight model compound trans-(S)-4-(2-pivaloyloxypropanoyloxy)azobenzene were prepared. Free radically initiated homopolymerization of the methacrylic monomer afforded in fairly high yield a rather high molecular weight polymer which was molecularly and structurally characterized. The molecular mobility of the polymer in all trans configuration, as well as chiroptical properties, photoisomerization kinetics and photochromic behaviour were investigated and compared with those of the low and high molecular weight related compounds. The polymer photoresponsive properties were evaluated by circular dichroism measurements at various extents of photoisomerization. All the results are discussed in terms of structural requirements of the macromolecules. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

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页码：6621 / 6629

页数：9

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