用于铜离子检测的单颗粒NaYF:Yb/Er/Zn纳米颗粒增强型上转换荧光探针

Enhanced upconversion fluorescent probe of single NaYF:Yb/Er/Zn nanoparticles for copper ion detection.

作者信息

Zhang Baobao, Meng Jiajia, Mi Xiaohu, Zhang Changjian, Zhang Zhenglong, Zheng Hairong

机构信息

School of Physics and Information Technology, Shaanxi Normal University Xi'an 710119 P. R. China

出版信息

RSC Adv. 2018 Nov 8;8(66):37618-37622. doi: 10.1039/c8ra07103a. eCollection 2018 Nov 7.

DOI:10.1039/c8ra07103a

PMID:35558603

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9089350/

Abstract

Surface modified NaYF:Yb/Er/Zn upconversion nanoparticles were obtained by using branched polyethylenimine (PEI). Strong fluorescence emission was observed and the influence of copper ions on the fluorescence emission of the PEI-modified NaYF:Yb/Er/Zn nanoparticles was investigated. It was found that the fluorescence emission can be quenched through luminescence resonance energy transfer from the particle to the copper ions. The results show that the PEI modified NaYF:Yb/Er/Zn nanoparticle can be used as a fluorescent probe for highly sensitive and selective detection of copper ions.

摘要

通过使用支化聚乙烯亚胺（PEI）获得了表面改性的NaYF:Yb/Er/Zn上转换纳米颗粒。观察到强烈的荧光发射，并研究了铜离子对PEI改性的NaYF:Yb/Er/Zn纳米颗粒荧光发射的影响。发现通过从颗粒到铜离子的发光共振能量转移可以淬灭荧光发射。结果表明，PEI改性的NaYF:Yb/Er/Zn纳米颗粒可作为用于高灵敏度和选择性检测铜离子的荧光探针。