Mn2+ Doped ZnS/ZnS Core/shell Quantum Dots Capped with 3-Mercaptopropionic for Determination of Folic Acid
In this work,Zinc sulphide(ZnS)core-shell nanopaticles with the Mn2+ doped core and ZnS as the shell capped with 3-Mercaptopropionic acid(MPA)has been synthesized via chemical precipitation approach.Structure analysis was taken by XRD confirming phase purity.The TEM measurements depicted that the prepared nanoparticles are mono-dispersed and they have average diameter of 5nm.Photoluminescence property of ZnS:Mn/ZnS quantum dots was studied by PL-spectrometer.The fluorescence quenching of ZnS:Mn2+ QDs caused by folic acid(FA)was studied by Stern-Volmer equation.The linear range of quenching effect is concentration dependence from 2μM to 60μM.The prepared QDs were evaluated as a fluorescence probe for FA detection with a high sensitivity.The proposed method was applied in the determination of folic acid in folic acid tablet.The possible quenching mechanism is also studied.
Yao Zhao Niancai Peng Xueyong Wei Zhuangde Jiang Junjun Wu
School of Mechanical Engineering,Xi”an Jiaotong University,710049,Xi”an,China
国内会议
南京
英文
1-7
2015-10-16（万方平台首次上网日期，不代表论文的发表时间）