Layer-by-layer self-assembly thin film based on carboxymethyl-β-cyclodextrins and diazoresin

Jun Ge Zhi*, Xu Ling Tian, Bin Tong, Xiu Ling Xu, Wei Zhao, Jian Bing Shi, Yu Ping Dong

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Carboxymethyl-β-cyclodextrins (CM-β-CDs) having different carboxymethylated degrees were synthesized. Their structures and carboxymethylated degrees were characterized by H-NMR. A self-assembled multilayer thin-film was fabricated with CM-β-CD as an anion and photosensitive diazoresin (DR) as a polycation based on ionic interaction. The quantity of deposition of self-assembled CM-β-CD/DR films increased with increasing the degree of carboxymethylation of CM-β-CD and the ionic strength of solvent from which CM-β-CD deposited. However, the concentration and pH value of the CM-β-CD aqueous solution had little effect on the self-assembled multilayer films. Under UV irradiation, following the decomposition of diazonium group, between the adjacent interfaces of the multilayers, the ionic bonds of the self-assembly film converted to covalent bonds, which improves the stablity of the film effectively.

Original languageEnglish
Pages (from-to)85-89
Number of pages5
JournalBeijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
Volume28
Issue number1
Publication statusPublished - Jan 2008

Keywords

  • Carboxymethyl-β-cyclodextrins
  • Diazoresin
  • Self-assembled multilayer film

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