期刊
MACROMOLECULAR CHEMISTRY AND PHYSICS
卷 212, 期 21, 页码 2319-2327出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/macp.201100319
关键词
atom transfer radical polymerization (ATRP); bent conformation; inclusion chemistry; polypseudorotaxane; gamma-cyclodextrin
资金
- Natural Science Foundation of China [20974015]
- Doctoral Program Foundation of Ministry of Education of China [20091101110029]
The unexpected formation of polypseudorotaxanes via attaching 2-bromoisobutyryl groups to both ends of poly(ethylene glycol) (PEG), which leads to the self-assembly with gamma-cyclodextrins in aqueous solution, is reported in this study. The resulting polypseudorotaxanes exhibit stable and unconventional single PEG bent conformations as evident from XRD, FTIR, GPC, C-13 CP/MAS, and H-1 NMR analyses. These polypseudorotaxane products are so stable that they can initiate the bulk ATRP of butyl methacrylate to give rise to the same conformational polypseudorotaxanes.
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