Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 337, Issue 1, Pages 278-284Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2009.05.026
Keywords
Hyperbranched; Self-assembly; Polyglycerols; Vesicles; Micelles
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Funding
- National Natural Science Foundation of China [50633010, 20774057]
- National Basic Research Program [2007CB808000, 2009CB930400]
- Zhejiang Provincial Natural Science Foundation of China [Y405411]
- New Century Excellent Talents in University [NCET-07-0558]
- Fok Ying Tung Education Foundation [114029]
- Basic Research Foundation [07DJ14004]
- Shanghai Leading Academic Discipline [13202]
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A series of palmitoyl chloride-grafted hyperbranched polyglycerols were synthesized through cationic ring-opening polymerization and end-group modification. The obtained grafted copolymer of HPG-C16 possesses a hydrophilic hyperbranched polyether core and many hydrophobic alkyl arms, which shows interesting self-assembly behavior in THF and water. The results indicate that the copolymers with a relatively high alkyl grafting ratio can form unimolecular micelles in THF and will further assemble into giant vesicles around 1-10 mu m in THF/water mixed solvents. However, the HPG-C16 with a low alkyl grafting ratio of 15.6% can directly assemble into vesicles in THF and form micelles in water. (C) 2009 Elsevier Inc. All rights reserved.
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