Formation and Photoresponsive Properties of Giant Microvesicles Assembled from Azobenzene-Containing Amphiphilic Diblock Copolymers
Diblock copolymers composed of poly(acrylic acid) and poly{6‐[4‐(4‐methylphenylazo)phenoxy]hexyl acrylate} (PAA‐block‐PAzoM) were synthesized by RAFT polymerization. In a mixture of H2O and THF, PAA‐block‐PAzoM self‐assembled into giant spherical microvesicles, which were dispersed in the mixture. U...
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Published in | Macromolecular chemistry and physics Vol. 208; no. 9; pp. 955 - 963 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Weinheim
WILEY-VCH Verlag
04.05.2007
WILEY‐VCH Verlag Wiley |
Subjects | |
Online Access | Get full text |
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Summary: | Diblock copolymers composed of poly(acrylic acid) and poly{6‐[4‐(4‐methylphenylazo)phenoxy]hexyl acrylate} (PAA‐block‐PAzoM) were synthesized by RAFT polymerization. In a mixture of H2O and THF, PAA‐block‐PAzoM self‐assembled into giant spherical microvesicles, which were dispersed in the mixture. Using UV‐vis spectroscopy and optical microscopy, it is demonstrated that the spherical shape of the vesicles results from a framework composed of the azobenzene H‐aggregate skeleton. A plausible structural model of the microvesicles is proposed, and a discussion on the formation of H‐aggregates and the photoresponsive properties is presented. |
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Bibliography: | Chinese Academy of Sciences - No. kjcx3.syw.HO2 ArticleID:MACP200600628 istex:B9F82EB6C96B7977DCED4BE9CA33E35D2A2383D3 ark:/67375/WNG-PM2D19QN-0 National Science Foundation of China - No. 50025309; No. 50533040; No. 50573071 National Basic Research Program of China - No. 2006cb302900 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 1022-1352 1521-3935 |
DOI: | 10.1002/macp.200600628 |