Catalysis Letters

, Volume 124, Issue 3–4, pp 413–417 | Cite as

An Artificial Supramolecular Nanozyme Based on β-Cyclodextrin-Modified Gold Nanoparticles

  • Xiangqiu Li
  • Zhenhui Qi
  • Kai Liang
  • Xiaolong Bai
  • Jiayun Xu
  • Junqiu Liu
  • Jiacong Shen
Article
First Online:
Received:
Revised:
Accepted:

Abstract

An artificial nanozyme model was developed by the supramolecular complexation of a β-cyclodextrin-modified gold nanoparticle and metal catalytic centers. The cyclodextrin-based monolayer was first constructed on the surface of gold nanoparticle by using the thiol modified cyclodextrin, subsequently the cyclodextrin-modified gold nanoparticle was utilized as a backbone to install metal catalytic centers by supramolecular assembly of the copper complex of triethylnetetramine-adamantane and β-cyclodextrin receptors immobilized on the surface of gold nanospheres via hydrophobic interaction. The catalytic behaviors of β-cyclodextrin-modified gold nanoparticles with adjacent multi-metal catalytic centers were investigated as an esterase mimic. Strong hydrolase activities for catalyzing the cleavage of an active ester 4,4′-dinitrodiphenyl carbonate (DNDPC) were observed. A detailed kinetic study on nanozyme-catalyzed hydrolysis of ester DNDPC has been described.

Keywords

Nanoenzyme Supermolecule Thiolated-cyclodextrin Gold nanoparticles Enzyme mimic 
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Notes

Acknowledgments

This work was supported by the Natural Science Foundation of China (No: 20534030, 20471023), the National Basic Research Program (2007CB808006), and the Innovative Research Team in University (IRT0422).

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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Xiangqiu Li
    • 1
  • Zhenhui Qi
    • 1
  • Kai Liang
    • 1
  • Xiaolong Bai
    • 1
  • Jiayun Xu
    • 1
  • Junqiu Liu
    • 1
  • Jiacong Shen
    • 1
  1. 1.State Laboratory of Supramolecular Structure and MaterialsJilin UniversityChangchunChina

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