THERMOSENSITIVE POLYION COMPLEX MICELLES PREPARED BY SELFASSEMBLY OF TWO OPPOSITELY CHARGED DIBLOCK COPOLYMERS

Pan He; Chang-wen Zhao; Chun-sheng Xiao; Zhao-hui Tang; Xue-si Chen

doi:10.1007/s10118-013-1226-7

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THERMOSENSITIVE POLYION COMPLEX MICELLES PREPARED BY SELFASSEMBLY OF TWO OPPOSITELY CHARGED DIBLOCK COPOLYMERS

PAPER | Updated：2023-01-03

- THERMOSENSITIVE POLYION COMPLEX MICELLES PREPARED BY SELFASSEMBLY OF TWO OPPOSITELY CHARGED DIBLOCK COPOLYMERS
- Chinese Journal of Polymer Science Vol. 31, Issue 2, Pages: 318-324(2013)
- Affiliations：
  
  a.Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun 130022, China
  b.Graduate School of Chinese Academy of Sciences, Beijing 100039, China
- Author bio：
  
  **Xue-si Chen (陈学思), E-mail: xschen@ciac.jl.cn
- Funds：
- DOI：10.1007/s10118-013-1226-7
  CLC：
- Received：18 May 2012，
  
  Revised：2012-07-16，
  
  Accepted：30 July 2012，
  
  Published：2013-02
- Accepted：
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Pan He, Chang-wen Zhao, Chun-sheng Xiao, et al. THERMOSENSITIVE POLYION COMPLEX MICELLES PREPARED BY SELFASSEMBLY OF TWO OPPOSITELY CHARGED DIBLOCK COPOLYMERS[J]. Chinese Journal of Polymer Science, 2013, 31(2): 318-324.
DOI：

Pan He, Chang-wen Zhao, Chun-sheng Xiao, et al. THERMOSENSITIVE POLYION COMPLEX MICELLES PREPARED BY SELFASSEMBLY OF TWO OPPOSITELY CHARGED DIBLOCK COPOLYMERS[J]. Chinese Journal of Polymer Science, 2013, 31(2): 318-324. DOI： 10.1007/s10118-013-1226-7.

摘要

Abstract

Polyion complex (PIC) micelles were spontaneously formed in aqueous solutions through electrostatic interaction between two oppositely charged block copolymers

poly(N-isopropylacrylamide)-

-poly(L-glutamic acid) and poly(

-isopropylacrylamide)-

-poly(L-lysine). Their controlled synthesis was achieved

via

the ring opening polymerization of

-carboxyanhydrides (NCA)

-benzyloxycarbonyl-L-lysine (Lys(Z)-NCA) or

-benzyl-L-glutamate (BLG-NCA) with amino-terminated poly(

-isopropylacrylamide) macroinitiator and the subsequent deprotection reaction. The formation of PIC micelles was confirmed by dynamic light scattering and transmission electron microscopy. Turbidimetric characterization suggested that the formed PIC micelles had a concentration-dependent thermosensitivity and their phase transition behaviors could be easily adjusted either by the block length of coplymers or the concentration of micelles.

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