Stability and quantum yield effects of small molecule additives on solutions of semiconductor nanoparticles

被引：55

作者：

Gaunt, JA

Knight, AE

Windsor, SA

Chechik, V ^{[1
]}

机构：

[1] Univ York, Dept Chem, York YO10 5DD, N Yorkshire, England

[2] Natl Phys Lab, Teddington TW11 0LW, Middx, England

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2005年 / 290卷 / 02期

关键词：

CdSe; CdSe/ZnSe; CdSe/ZnS; nanoparticles; photostability; photooxidation; amine; phosphine; antioxidant;

D O I：

10.1016/j.jcis.2005.04.073

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：

The effect of additives on the photostability of semiconductor nanoparticles was studied using CdSe, CdSe/ZnSe and CdSe/ZnS particles of various sizes and composition. The additives included phosphine oxides, amines, and antioxidants. Strong initial enhancement of band edge emission by hexadecylamine was observed for the uncoated particles but stability over a week period in light and air was shown to be poor. Inorganic coatings rendered the nanoparticles initially insensitive to additive but provided little extra stability in terms of photoluminescence. Antioxidant was shown to be effective at reducing the rate of photooxidative degradation for all particles in chloroform but not in toluene. (c) 2005 Elsevier Inc. All rights reserved.

引用

页码：437 / 443

页数：7

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