CdSe quantum dots decorated by mercaptosuccinic acid as fluorescence probe for Cu2+

被引：85

作者：

Chen, Shutang ^{[1
]}

Zhang, Xiaoling ^{[1
]}

Zhang, Qiuhua ^{[1
]}

Hou, Xiaomiao ^{[1
]}

Zhou, Qi ^{[1
]}

Yan, Jilin ^{[2
]}

Tan, Weihong ^{[3
]}

机构：

[1] Beijing Inst Technol, Dept Chem, Sch Sci, Minist Educ,Key Lab Cluster Sci, Beijing 100081, Peoples R China

[2] Soochow Univ, Dept Chem, Suzhou 215123, Peoples R China

[3] Univ Florida, Dept Chem, Ctr Res Bio Nano Interface, Gainesville, FL 32611 USA

来源：

JOURNAL OF LUMINESCENCE | 2011年 / 131卷 / 05期

关键词：

CdSe; Quantum dots; Probes; Copper ions; SEMICONDUCTOR NANOCRYSTALS; SURFACE MODIFICATION; CDTE NANOCRYSTALS; AQUEOUS-SOLUTION; NANOPARTICLES; IONS; AGGREGATION; MECHANISM;

D O I：

10.1016/j.jlumin.2010.12.029

中图分类号：

O43 [光学];

学科分类号：

070207 [光学];

摘要：

Water-soluble CdSe quantum dots (QDs) were synthesized using mercaptosuccinic acid (MSA) as a stabilizer. The growth process and characterization of CdSe quantum dots were determined by transmission electron microscopy (TEM), X-ray diffraction (XRD), photoluminescence (PL) spectroscopy, Ultraviolet-visible (UV-vis) spectroscopy, and Fourier transform infrared (FT-IR) spectroscopy. Results demonstrated the MSA-capped CdSe QDs were highly crystalline and possessed good optical properties. Further, the resulting products could be used as fluorescent probes to detect Cu2+ ions in physiological buffer solution. The response was linearly proportional to the concentration of Cu2+ ion in the range 2 x 10(-8)- 3.5 x 10(-7) mol L-1 with a detection limit of 3.4 nmol L-1. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：947 / 951

页数：5

共 32 条

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