Citation: Yao-hui Xing, Shao-liang Lin, Jia-ping Lin, Xiao-hua He. SYNTHESIS, SELF-ASSEMBLY AND RESPONSIVE PROPERTIES OF PEG-b-PDMAEMA-b-PMMAzo TRIBLOCK COPOLYMERS[J]. Chinese Journal of Polymer Science, ;2013, 31(5): 833-840. doi: 10.1007/s10118-013-1283-y shu

SYNTHESIS, SELF-ASSEMBLY AND RESPONSIVE PROPERTIES OF PEG-b-PDMAEMA-b-PMMAzo TRIBLOCK COPOLYMERS

Received Date: 31 December 2012
Revised Date: 30 January 2013

Fund Project: This work was financially supported by the National Natural Science Foundation of China (Nos. 51103044, 21174038 and 50925308), Projects of Shanghai Municipality (11QA1401600 and 13ZZ041) and Fundamental Research Funds for the Central Universities (20100074120001, NCET-12-0857 and WD1213002).

A novel amphiphilic copolymer poly(ethylene glycol)-block-poly(N,N-dimethylamino-2-ethylmethacrylate)-block-poly[6-(4-methoxy-azobenzene-4'-oxy) hexyl methacrylate] (PEG-b-PDMAEMA-b-PMMAzo) was prepared by ATRP polymerization. The self-assembly and responsive behaviors were investigated by SEM, TEM, LLS and UV-Vis spectra. The results indicated that the copolymers can self-assemble into spherical structures in aqueous media. The aggregate size can be tuned by pH and temperature. The trans-cis isomerization behavior of the formed aggregates was also examined. Upon irradiation with a linear polarized light, the elongation degree of the aggregates was increased with the irradiation time.
- Azobenezene,
- Copolymer,
- Self-assemble,
- Responsive
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