Enhanced chemiluminescence from reactions between CdTe/CdS/ZnS quantum dots and periodate

被引：20
作者：
Li, Yu [1 ]
Zheng, Yong-Zan [1 ]
Zhang, Ding-Kun [1 ]
Li, Hai-Fang [1 ]
Ma, Yuan [1 ]
Lin, Jin-Ming [1 ]
机构：
[1] Tsinghua Univ, Beijing Key Lab Microanalyt Methods & Instrumenta, Dept Chem, Beijing 100084, Peoples R China
来源：
CHINESE CHEMICAL LETTERS | 2017年 / 28卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Chemiluminescence; CdTe/CdS/ZnS quantum dots; Periodate; Electron injection; Hole injection; ELECTROGENERATED CHEMILUMINESCENCE; SELECTIVE DETECTION; CARBON NANODOTS; WATER; BIOLUMINESCENCE; NANOCRYSTALS; OXIDATION; PEROXIDE; SYSTEM; IONS;
D O I：
10.1016/j.cclet.2016.07.020
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A novel chemiluminescence (CL) performance of CdTe/CdS/ZnS quantum dots (QDs) with periodate (1(104) was studied. Effects of concentration and pH on the CL system were investigated. Electron spin resonance (ESR) and the effects of radical scavenger analysis were employed for identification of intermediate species. The CL spectra for this system showed only one maximum emission peak centered around 620 nm, which was similar with photoluminescence (PL) spectra of CdTe/CdS/ZnS QDs. The CL of CdTe/CdS/ZnS QDs was induced by direct chemical oxidation and the possible mechanism could be explained by radiative recombination of injected holes and electrons. This investigation not only provided new sight into the optical characteristics of CdTe/CdS/ZnS QDs, but also broadened their potential optical utilizations.(C) 2016 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：184 / 188
页数：5
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