Preparation, Characterization and Application of Water-soluble CdTe Luminescent Probes

ZHOU Hua-jian; CAO Li-xin; GAO Rong-jie; SU Ge; LIU Wei; ZHAO Yan-ling; WANG Lei

doi:10.3788/fgxb20133407.0829

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Preparation, Characterization and Application of Water-soluble CdTe Luminescent Probes

更新时间：2020-08-12

- Preparation, Characterization and Application of Water-soluble CdTe Luminescent Probes
- Chinese Journal of Luminescence Vol. 34, Issue 7, Pages: 829-835(2013)
- 作者机构：
  
  中国海洋大学材料科学与工程研究院,山东青岛,266100
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20133407.0829
  CLC： O657.3
- Received：03 April 2013，
  
  Revised：14 May 2013，
  
  Published：10 July 2013
- 稿件说明：
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周华健, 曹立新, 高荣杰, 苏革, 柳伟, 赵艳玲, 王磊. 水溶性CdTe量子点荧光探针的制备表征及应用[J]. 发光学报, 2013,34(7): 829-835

ZHOU Hua-jian, CAO Li-xin, GAO Rong-jie, SU Ge, LIU Wei, ZHAO Yan-ling, WANG Lei. Preparation, Characterization and Application of Water-soluble CdTe Luminescent Probes[J]. Chinese Journal of Luminescence, 2013,34(7): 829-835
周华健, 曹立新, 高荣杰, 苏革, 柳伟, 赵艳玲, 王磊. 水溶性CdTe量子点荧光探针的制备表征及应用[J]. 发光学报, 2013,34(7): 829-835 DOI： 10.3788/fgxb20133407.0829.

ZHOU Hua-jian, CAO Li-xin, GAO Rong-jie, SU Ge, LIU Wei, ZHAO Yan-ling, WANG Lei. Preparation, Characterization and Application of Water-soluble CdTe Luminescent Probes[J]. Chinese Journal of Luminescence, 2013,34(7): 829-835 DOI： 10.3788/fgxb20133407.0829.

摘要

采用水相合成法

在氮气气氛下

以3-巯基丙酸(MPA)为稳定剂制备了水溶性的CdTe量子点

并通过荧光 (PL)光谱、紫外可见(UV-Vis)光谱、透射电子显微镜(TEM)和X射线粉末衍射(XRD)对样品进行了表征。XRD结果表明量子点为立方闪锌矿结构

TEM结果表明量子点分散性较好

形状为球形

平均粒径为2.0 nm。进一步考察了回流时间、反应温度和体系pH值对量子点性能的影响

结果表明:回流时间、反应温度和体系pH值对量子点的粒径大小、粒径分布及生长速度均有影响。基于量子点对金属离子具有荧光响应的特性

以CdTe量子点为荧光探针实现了对水溶液中Ni

的检测。

Abstract

3-Mercaptopropionic acid capped CdTe quantum dots (QDs) were synthesized in aqueous solution under nitrogen protection. The samples were characterized by photoluminescence (PL) spectroscopy

Ultraviolet-Visible (UV-Vis) spectroscopy

transmission electron microscopy (TEM) and X-ray diffraction (XRD)

respectively. The XRD result show that CdTe QDs have a cubic zinc-blende structure

and the TEM result show that CdTe QDs are spherical with good dispersibility. The effects of reflux time

reflux temperature and pH on the property of QDs were studied. Experimental results show that reflux time

reflux temperature and pH can influence the particle size

size distribution and the rate of growth. The obtained CdTe QDs are water-soluble and have fluorescence sensitivity to Ni

ions

thus CdTe QDs can be used as the fluorescent probe to investigate Ni

ion in water.

关键词

Keywords

references

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