Preparation and Characterization of Highly Luminescent Water-Soluble CdTe Quantum Dots as Optical Temperature Probes

被引：22

作者：

Liu, Jiwei ^{[1
,2
]}

Zhang, Yu ^{[1
]}

Ge, Cunwang ^{[3
]}

Jin, Yonglong ^{[1
]}

Hu, Sunling ^{[1
]}

Gu, Ning ^{[1
]}

机构：

[1] Southeast Univ, State Key Lab Bioelect, Jiangsu Key Lab Biomat & Devices, Nanjing 210096, Peoples R China

[2] Southeast Univ, Sch Chem & Chem Engn, Nanjing 210096, Peoples R China

[3] Nantong Univ, Dept Chem, Nantong 226007, Peoples R China

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2010年 / 10卷 / 11期

关键词：

Quantum Dots; Temperature-Dependent Photoluminescence; Fluorescence Thermometry; CDSE NANOCRYSTALS; SEMICONDUCTOR NANOCRYSTALS; PHOTOLUMINESCENCE; NANOPARTICLES; THERMOMETRY; PRECURSOR; ROUTES; SHAPE;

D O I：

10.1166/jnn.2010.2851

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Highly luminescent water-soluble CdTe quantum dots were synthesized with an electrogenerated precursor. The size, morphology, optical properties as well as fluorescence stability were characterized by transmission electron microscope, high-resolution transmission electron microscope, powder X-ray diffraction, UV-vis-NIR spectrophotometer, and fluorescence spectrophotometer. The results show that the CdTe QDs with diameter ranging from 2.0 nm to 3.5 nm have good crystal-lizability, high quantum yield and favorable fluorescence stability. Moreover, the CdTe QDs demonstrate temperature-dependent reversible PL intensity variations at moderate temperatures above room temperature. It is also found that the QDs with different sizes possess different sensitivity to the temperature. All the studies indicate that the CdTe QDs are expected to be promising candidates for a variety of biological and biomedical applications.

引用

页码：7578 / 7582

页数：5

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