The photo-activated oxidase-like activity of gold nanoclusters: Implication for singlet oxygen generation

被引：7

作者：

Yu, Po-Yen ^{[1
]}

Chen, Yu-Shan ^{[1
]}

Yu, Hui-Hsuan ^{[1
]}

Chen, Fang-, I ^{[1
]}

Chen, Zhi-Wen ^{[1
]}

Liu, Ching-Ping ^{[1
]}

机构：

[1] Fu Jen Catholic Univ, Dept Chem, New Taipei 242062, Taiwan

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2022年 / 432卷

关键词：

Gold nanoclusters; Gold nanoparticles; Oxidase; Singlet oxygen; Photocatalysis; PHOTOCATALYTIC ACTIVITY; METAL NANOCLUSTERS; NANOPARTICLES; EXCITATION; CONVERSION; SOLAR;

D O I：

10.1016/j.jphotochem.2022.114063

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Gold-based nanomaterials have been widely used as photocatalysts, but little is known about their catalytic mechanism. In this work, we systematically investigated the oxidase-like activity of bovine serum albumin stabilized gold nanoclusters (BSA-Au25NCs) and gold nanoparticles (AuNPs) upon with different wavelengths. Our experiments showed that only BSA-Au25NCs could possess the photo-activated oxidase-like activity because the generation of reactive oxygen species (ROS) from BSA-Au25NCs was relatively efficient as compared to that of AuNPs. In addition, the interaction of BSA-Au25NCs with copper ions (Cu2+) further verified that singlet oxygen (O-1(2)) was the key reactive species in the dominant involvement of the photo-oxidase reaction. This work provides new insight into regulating the O-1(2) generation of BSA-Au25NCs, which might help in the design of AuNCs for other photocatalytic and photodynamic applications.

引用

页数：8

共 44 条

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[44] Glutathione-capped gold nanoclusters: photoinduced energy transfer and singlet oxygen generation§\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$^{\S }$$\end{document}
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