Journal
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
Volume 48, Issue 13, Pages 2855-2861Publisher
WILEY
DOI: 10.1002/pola.24062
Keywords
block copolymers; micelle; microencapsulation; nanocarrier; nanoparticles; photo responsive; reverse micelle; stimuli-sensitive polymers
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Funding
- Natural Science Foundation of China [20774082, 50830106]
- 863 National High-Tech RD Program [2006AA03Z329]
- Ph.D. Programs Foundation of Ministry of Education [20070335024]
- NSFC-ZJ [Y4080250]
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A novel photo and thermo double-responsive block copolymer was developed to fabricate micelles and reverse micelles in aqueous solution. The block copolymer was synthesized by ATRP block copolymerization of a spiropyran-containing methacrylate (SPMA) with di(ethylene glycol) methyl ether methacrylate (DEGMMA). By facile control of the photo irradiation and solution temperature, PSPMA-core and PDEGMMA-core micelles can be obtained, respectively. The thermo- and photo-responsive micelles were used as smart polymeric nanocarriers for controlled encapsulation, triggered release, and re-encapsulation of model drug coumarin 102. The double-responsive self-assembly and disassembly were tracked by dynamic light scattering, transmission electron microscopy, and fluorescence spectroscopy. (C) 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 28552861, 2010
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