Synthesis and characterization of water-soluble <Emphasis Type="SmallCaps">l</Emphasis>-cysteine-modified ZnS nanocrystals doped with silver |
| |
Authors: | Fenghua Huang Yaling Lan Peifeng Chen |
| |
Affiliation: | (1) College of Chemistry and Material Science, Fujian Normal University, Fuzhou, 350007, Fujian, People’s Republic of China;(2) Key Laboratory of Polymer Materials of Fujian Province, Fuzhou, 350007, Fujian, People’s Republic of China |
| |
Abstract: | The water-soluble Ag+-doped ZnS nanocrystals surface capped with cysteine (expressed as ZnS:Ag/Cys) were synthesized in aqueous solution by using
l-cysteine as surface modifier. The crystal structure, size, shape, component, and spectral properties of ZnS:Ag/Cys nanocrystals
were characterized by X-ray power diffraction, transmission electron microscope, energy dispersive X-ray analysis, inductively
coupled plasma atomic emission spectrometry, infrared spectrum, UV–Vis absorption spectrum, and photoluminescence spectrum.
The results show that the spherical ZnS:Ag/Cys nanocrystals with an average diameter of 2.6 nm have good fluorescent characteristics,
their fluorescence intensity is enhanced greatly after doped with Ag+. And the sulfur atoms in cysteine molecules are coordinated with metal ions on the surface of the nanocrystals, the cysteine
modified on the surface of ZnS:Ag/Cys nanocrystals renders the nanocrystals water soluble and biocompatible. The ZnS:Ag/Cys
nanocrystals have potential applications in molecular assembly and biological fluorescence analysis. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|