Aggregation-Induced Structure Transition of Protein-Stabilized Zinc/Copper Nanoclusters for Amplified Chemiluminescence

被引：93

作者：

Chen, Hui ^{[1
,2
]}

Lin, Ling ^{[3
]}

Li, Haifang ^{[2
]}

Li, Jianzhang ^{[1
]}

Lin, Jin-Ming ^{[2
]}

机构：

[1] Beijing Forestry Univ, MOE Key Lab Wooden Mat Sci & Applicat, Beijing 100083, Peoples R China

[2] Tsinghua Univ, Dept Chem, Beijing Key Lab Microanalyt Methods & Instrumenta, Key Lab Bioorgan Phosphorus Chem & Chem Biol, Beijing 100084, Peoples R China

[3] Univ Tokyo, Fac Engn, Tokyo 1138654, Japan

来源：

ACS NANO | 2015年 / 9卷 / 02期

基金：

中国国家自然科学基金;

关键词：

nanoclusters; nanoparticles; surface plasmon resonance; fluorescence; chemiluminescence; METAL NANOCLUSTERS; HYDROGEN-PEROXIDE; CU NANOCLUSTERS; ACTIVE-SITE; LABEL-FREE; GOLD; FLUORESCENCE; CLUSTERS; MECHANISM; SIZE;

D O I：

10.1021/acsnano.5b00141

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A stable, water-soluble fluorescent Zn/Cu nanocluster (NC) capped with a model protein, bovine serum albumin (BSA), was synthesized and applied to the reaction of hydrogen peroxide and sodium hydrogen carbonate. A significantly amplified chemiluminescence (CL) from the accelerated decomposition of peroxymonocarbonate (HCO4 ) by the nanosluster was observed. The CL reaction led to a structure change of BSA and aggregation of Zn/Cu NCs. In the presence of H2O2, Zn/CuS bonding between BSA scaffolds and the encapsulated Zn/Cu@BSA NC was oxidized to form a disulfide product. Zn/Cu@BSA NCs were prone to aggregate to form larger nanoparticles without the protection of scaffolds. It is revealed that the strong CL emission was initiated from the catalysis of Zn/Cu@BSA NC and the surface plasmon coupling of the formed Zn/Cu nanoparticles in a single chemical reaction. This amplified CL was successfully exploited for selective sensing of hydrogen peroxide in environmental samples.

引用

页码：2173 / 2183

页数：11

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