Chiroptical Switching Based on Photoinduced Proton Transfer between Homopolymers Bearing Side-Chain Spiropyran and Azopyridine Moieties

被引：24

作者：

Angiolini, Luigi ^{[1
,2
]}

Benelli, Tiziana ^{[1
,2
]}

Giorgini, Loris ^{[1
,2
]}

Raymo, Francisco M. ^{[3
]}

机构：

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

[2] Univ Bologna, INSTM, UdR Bologna, I-40136 Bologna, Italy

[3] Univ Miami, Dept Chem, Ctr Supramol Sci, Coral Gables, FL 33146 USA

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 2008年 / 209卷 / 19期

基金：

美国国家科学基金会;

关键词：

amplification of chirality; chiroptical switches; photochromism; polymeric azopyridine; polymeric spiropyran;

D O I：

10.1002/macp.200800192

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 polymeric methacrylate, bearing the (S)-3-hydroxy pyrrolidinyl group linked through the nitrogen atom to an azopyridine chromophore, was synthesized and investigated in combination with a polymeric methacrylate incorporating the photoisomerizable spiropyran chromophore in the side-chain. In the presence of acid, this system can be operated in solution to modulate the protonation of the azopyridine moieties by photoisomerizing the spiropyran component. In addition to UV-vis spectroscopy, the proton transfer process occurring between the macromolecular components can be also followed by CD spectroscopy, thus behaving as a chiroptical switch.

引用

页码：2049 / 2060

页数：12

共 68 条

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