期刊
CHINESE JOURNAL OF POLYMER SCIENCE
卷 31, 期 5, 页码 833-840出版社
SPRINGER
DOI: 10.1007/s10118-013-1283-y
关键词
Azobenezene; Copolymer; Self-assemble; Responsive
资金
- National Natural Science Foundation of China [51103044, 21174038, 50925308]
- Shanghai Municipality [11QA1401600, 13ZZ041]
- Fundamental Research Funds for the Central Universities [20100074120001, NCET-12-0857, WD1213002]
A novel amphiphilic copolymer poly(ethylene glycol)-block-poly(N,N-dimethylamino-2-ethylmethacrylate)-blockpoly[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.
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