Synthesis and characterisation of functional manganese doped ZnS quantum dots for bio-imaging application

被引：10

作者：

Singhal, Manju ^{[1
]}

Sharma, J. K. ^{[1
]}

Jeon, H. C. ^{[2
]}

Kang, T. W. ^{[2
]}

Kumar, Sunil ^{[2
]}

机构：

[1] Maharishi Markandeshwar Univ, Dept Phys, Ambala, India

[2] Dongguk Univ, Nano Informat Technol Acad, Seoul 100715, South Korea

来源：

ADVANCES IN APPLIED CERAMICS | 2019年 / 118卷 / 06期

基金：

新加坡国家研究基金会;

关键词：

ZnS:Mn; quantum dots; glutathione; photoluminescence; biological window; GLUTATHIONE; FLUORESCENCE; PHOTOLUMINESCENCE; SENSOR;

D O I：

10.1080/17436753.2019.1587937

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Fluorescent quantum dots (QDs) are potential candidates for bio-imaging but major problems in using them for bio-imaging applications are either bandgap lying in UV region or the cytotoxicity of the visible light-excited cadmium-based QDs. Keeping these things in mind, glutathione (GLT) functionalised Mn-doped ZnS QDs has been studied to make a desired fluorescent system forbioimaging application. XRD measurements show that grain size decreases at higher concentration of GLT capping on Mn-doped quantum dots. UV-visible studies show that the band gap shows a blue shift at higher GLT concentration. FTIR studies confirm GLT functionalisation on the surface of ZnS QDs. Both UV excited and IR excited photoluminescence spectrum of samples exhibited a tunable orange emission intensity with increase in GLT concentration however multiphoton infrared excited spectra was used to show the feasibility of GLT functionalised ZnS:Mn quantum dots for a real application in a biological window of 650-950nm.

引用

页码：321 / 328

页数：8

共 20 条

[11] In situ synthesis of highly luminescent glutathione-capped CdTe/ZnS quantum dots with biocompatibility [J].