Synthesis and micellization behavior of stimuli-responsive polypeptide hybrid triblock copolymer

Jingyi Rao, Zhiyuan Zhu, Shiyong Liu

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Polypeptide hybrid triblock copolymer, poly(L-glutamic acid)-b- poly(propylene oxide)-b-poly (L-glutamic acid) (PLGA-b-PPO-b-PLGA), was synthesized by the ring-opening polymerization of benzyl-L-glutamic N-carboxyanhydride (BLG-NCA) using poly(propylene glycol) bis(2-aminopropyl ether) as initiator, followed by the subsequent deprotection step. The obtained double hydrophilic triblock copolymer exhibits "schizophrenic" micellization behavior in aqueous solution upon dually playing with solution pH and temperature. The multi-responsive micellization behavior of this polypeptide hybrid triblock copolymer has been thoroughly investigated by 1H NMR, laser light scattering (LLS), temperature-dependent optical transmittance, and circular dichroism spectroscopy (CD).

Original languageEnglish
Pages (from-to)1912-1917
Number of pages6
JournalChinese Science Bulletin
Volume54
Issue number11
DOIs
Publication statusPublished - 2009 Jun 1
Externally publishedYes

Fingerprint

Propylene Glycol
Micellization
Block copolymers
Peptides
Glutamic Acid
Circular dichroism spectroscopy
Polyphenylene oxides
Ring opening polymerization
Opacity
Light scattering
Ether
Nuclear magnetic resonance
Temperature
Lasers
polylactic acid-polyglycolic acid copolymer

Keywords

  • α-helix
  • Coil
  • Micellization
  • Poly(L-glutamic acid)
  • Poly(propylene glycol)

ASJC Scopus subject areas

  • General

Cite this

Synthesis and micellization behavior of stimuli-responsive polypeptide hybrid triblock copolymer. / Rao, Jingyi; Zhu, Zhiyuan; Liu, Shiyong.

In: Chinese Science Bulletin, Vol. 54, No. 11, 01.06.2009, p. 1912-1917.

Research output: Contribution to journalArticle

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N2 - Polypeptide hybrid triblock copolymer, poly(L-glutamic acid)-b- poly(propylene oxide)-b-poly (L-glutamic acid) (PLGA-b-PPO-b-PLGA), was synthesized by the ring-opening polymerization of benzyl-L-glutamic N-carboxyanhydride (BLG-NCA) using poly(propylene glycol) bis(2-aminopropyl ether) as initiator, followed by the subsequent deprotection step. The obtained double hydrophilic triblock copolymer exhibits "schizophrenic" micellization behavior in aqueous solution upon dually playing with solution pH and temperature. The multi-responsive micellization behavior of this polypeptide hybrid triblock copolymer has been thoroughly investigated by 1H NMR, laser light scattering (LLS), temperature-dependent optical transmittance, and circular dichroism spectroscopy (CD).

AB - Polypeptide hybrid triblock copolymer, poly(L-glutamic acid)-b- poly(propylene oxide)-b-poly (L-glutamic acid) (PLGA-b-PPO-b-PLGA), was synthesized by the ring-opening polymerization of benzyl-L-glutamic N-carboxyanhydride (BLG-NCA) using poly(propylene glycol) bis(2-aminopropyl ether) as initiator, followed by the subsequent deprotection step. The obtained double hydrophilic triblock copolymer exhibits "schizophrenic" micellization behavior in aqueous solution upon dually playing with solution pH and temperature. The multi-responsive micellization behavior of this polypeptide hybrid triblock copolymer has been thoroughly investigated by 1H NMR, laser light scattering (LLS), temperature-dependent optical transmittance, and circular dichroism spectroscopy (CD).

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