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

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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.

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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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Authors and Affiliations

  1. State Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130012, China

    Xiangqiu Li, Zhenhui Qi, Kai Liang, Xiaolong Bai, Jiayun Xu, Junqiu Liu & Jiacong Shen

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  1. Xiangqiu Li
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  2. Zhenhui Qi
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  3. Kai Liang
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  4. Xiaolong Bai
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  5. Jiayun Xu
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Correspondence to Junqiu Liu.

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Li, X., Qi, Z., Liang, K. et al. An Artificial Supramolecular Nanozyme Based on β-Cyclodextrin-Modified Gold Nanoparticles. Catal Lett 124, 413–417 (2008). https://doi.org/10.1007/s10562-008-9494-5

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  • DOI: https://doi.org/10.1007/s10562-008-9494-5

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