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Updated: Jul 19, 2026

Synthesis of Wavelength-shifting DNA Hybridization Probes by Using Photostable Cyanine Dyes
Published on: July 6, 2016
[Synthesis and spectral studies of functionalized L-Cys-CdS nanoparticles as fluorescence probes]
Mei-Ling Dai1, Zheng-Yu Yan, Dai-Wen Pang
1Department of Analytical Chemistry, China Pharmaceutical University, Nanjing 210038, China.
Abstract:
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.
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