Construction of Photoresponsive Supramolecular Micelles Based on Ethyl Cellulose Graft Copolymer

Chun-mei Jian; Bo-wen Liu; Xi Chen; Si-tong Zhou; Tommy Fang; Jin-ying Yuan

doi:10.1007/s10118-014-1450-9

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Construction of Photoresponsive Supramolecular Micelles Based on Ethyl Cellulose Graft Copolymer

Updated：2021-06-21

- Construction of Photoresponsive Supramolecular Micelles Based on Ethyl Cellulose Graft Copolymer
- Construction of Photoresponsive Supramolecular Micelles Based on Ethyl Cellulose Graft Copolymer
- Chinese Journal of Polymer Science 2014年32卷第6期页码：690-702
- Affiliations：
  
  Key Lab of Organic Optoelectronic & Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China
- Author bio：
  
  **Jin-ying Yuan (袁金颖), E-mail: yuanjy@mail.tsinghua.edu.cn
- Funds：
  
  National Natural Science Foundation of China(21174076;21374053);Specialized Research Fund for the Doctoral Program of Higher Education of China(20120002110015)
- DOI：10.1007/s10118-014-1450-9
  中图分类号：
- 收稿：2014-01-22，
  
  修回：2014-03-04，
  
  录用：2014-03-04，
  
  纸质出版：2014-06
- Accepted：
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Chun-mei Jian, Bo-wen Liu, Xi Chen, 等. Construction of Photoresponsive Supramolecular Micelles Based on Ethyl Cellulose Graft Copolymer[J]. Chinese Journal of Polymer Science, 2014,32(6):690-702.

Chun-mei Jian, Bo-wen Liu, Xi Chen, et al. Construction of Photoresponsive Supramolecular Micelles Based on Ethyl Cellulose Graft Copolymer[J]. Chinese Journal of Polymer Science, 2014, 32(6): 690-702.
Chun-mei Jian, Bo-wen Liu, Xi Chen, 等. Construction of Photoresponsive Supramolecular Micelles Based on Ethyl Cellulose Graft Copolymer[J]. Chinese Journal of Polymer Science, 2014,32(6):690-702. DOI： 10.1007/s10118-014-1450-9.

Chun-mei Jian, Bo-wen Liu, Xi Chen, et al. Construction of Photoresponsive Supramolecular Micelles Based on Ethyl Cellulose Graft Copolymer[J]. Chinese Journal of Polymer Science, 2014, 32(6): 690-702. DOI： 10.1007/s10118-014-1450-9.

摘要

Abstract

In this work

a UV-Visible light controlled supramolecular system based on ethyl cellulose (EC) was constructed

combining the host-guest interaction of

-cyclodextrin (

-CD) group and trans-isomer of azobenzene (

Azo) group. To link

-CD to the hydrophobic section

renewable EC was used as macroinitiator to initiate the polymerization of ε-caprolactone (

-CL) to form biocompatible and biodegradable comb copolymer EC-

-PCL

and

-CD was attached to the end of PCL side chain

via

click reaction. Meanwhile

hydrophilic PEG-

Azo was obtained by

'-dicyclohexylcarbodiimide (DCC) coupling. Then

the structures of the products were characterized by nuclear magnetic resonance (NMR) and gel permeation chromatography (GPC). Subsequently

with the formation of inclusion complexes by

-CD and tAzo groups

the obtained EC-

-PCL-

-CD/PEG-

Azo supramolecular system self-assembled in water with hydrophobic EC-

-PCL-

-CD as core and hydrophilic PEG-

Azo as shell. Furthermore

dynamic light scattering (DLS) and transmission electron microscopy (TEM) were utilized to investigate the particle size and size distribution

while NMR and UV-Vis spectra were applied to explore the UV-Visible light stimuli-responsiveness of the micelles.

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