Cyclodextrin capped CdTe quantum dots as versatile fluorescence sensors for nitrophenol isomers

被引：68

作者：

Zhang, Zhixing ^{[1
]}

Zhou, Jie ^{[1
]}

Liu, Yun ^{[1
]}

Tang, Jian ^{[1
]}

Tang, Weihua ^{[1
]}

机构：

[1] Nanjing Univ Sci & Technol, Minist Educ China, Key Lab Soft Chem & Funct Mat, Nanjing 210094, Jiangsu, Peoples R China

来源：

NANOSCALE | 2015年 / 7卷 / 46期

基金：

中国国家自然科学基金;

关键词：

PERFORMANCE LIQUID-CHROMATOGRAPHY; BETA-CYCLODEXTRIN; P-NITROPHENOL; AMPEROMETRIC DETECTION; CHIRAL SEPARATION; MOLECULAR RECOGNITION; GOLD NANOPARTICLES; ALPHA-CYCLODEXTRIN; GAMMA-CYCLODEXTRIN; OPTICAL-DETECTION;

D O I：

10.1039/c5nr06073g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Cyclodextrin (CD) capped CdTe quantum dots (QDs) were prepared with uniform dimension (average diameter similar to 5 nm) and high quantum yield (ca. 65%). By taking advantage of the inclusion complexation of CD, beta-CD-CdTe QDs exhibited strong fluorescence quenching in a linear relationship with the concentration of o-, m-and p-nitrophenol in the range of 20-100 mu M. The detection limit reached 0.05 mu M for o-/p-nitrophenol and 0.3 mu M for m-nitrophenol. The fluorescence decay study revealed the stabilization effect of CD covering on CdTe QDs and fine-tuning of the fluorescence for selective ultrasensitive detection of nitrophenol isomers.

引用

收藏

页码：19540 / 19546

页数：7

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