[Synthesis and spectral studies of functionalized L-Cys-CdS nanoparticles as fluorescence probes].
In this work, nano-CdS was successfully prepared. The nano-CdS was also modified with L-cysteine. Absorption and fluorescence spectra of CdS nanoparticles for different pH values, reaction times and different Cys/Cd2+/S ratios were investigated. Meanwhile a fluorescence enhancing effect was observed between trace zinc ions and the functionalized L-Cys-CdS nanoparticles. The response is linearly proportional to the concentration of zinc ions from 1.0 to 15 micromol x L(-1). The functionalized nanoparticles are hopeful of use as fluorescence probes in detecting trace elements in biological samples.
Dai
Mei-Ling
ML
Department of Analytical Chemistry, China Pharmaceutical University, Nanjing 210038, China.
Yan
Zheng-Yu
ZY
Pang
Dai-Wen
DW
Shao
Xiu-Fen
XF
Qu
Ping
P
Zhao
Jing-Tian
JT
D019187:Cadmium Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D003545:Cysteine / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D053758:Nanoparticles / Q000737:chemistry*; D013050:Spectrometry, Fluorescence / Q000379:methods*; D013056:Spectrophotometry, Ultraviolet; D013440:Sulfides / Q000138:chemical synthesis / Q000737:chemistry*
D019187:Cadmium Compounds; D005456:Fluorescent Dyes; D013440:Sulfides; C034939:cadmium sulfide; D003545:Cysteine