Sub-10 nm lanthanide-doped SrFCl nanoprobes:Controlled synthesis,optical properties and bioimaging

Sub-10 nm lanthanide-doped SrFCl nanoprobes:Controlled synthesis,optical properties and bioimaging

论文摘要

Alkaline-earth dihalide nanocrystals(NCs) such as SrFCl, owing to their high chemical stability and low phonon energy, are excellent host materials for lanthanide(Ln3+) doping to achieve desirable optical properties for various bioapplications, Herein, we report a novel strategy for the synthesis of sub-10 nm Ln3+-doped SrFCl NCs with efficient upconverting and downshifting luminescence through a facile onestep hot-injection method. Utilizing the temperature-dependent upconverting luminescence(UCL) from the thermally coupled 2H11/2and4S3/2 levels of Er3+, we showed the potential of SrFCl:Yb,Er NCs as sensitive UCL nanoprobes for non-contact thermal sensing with a maximum detection sensitivity of 0.0066 K-1, which is among the highest values for thermal sensing based on Er3+-activated UCL nanoprobes. Furthermore, by employing the intense downshifting luminescence from Tb3+ and Eu3+, we demonstrated the successful use of biotinylated SrFCl:Ce,Tb and SrFCl:Eu3+ nanoprobes for biotin receptor-targeted cancer cell imaging, thus revealing the great promise of SrFCl:Ln3+ nanoprobes for versatile bioapplications.

论文目录

文章来源

类型: 期刊论文

作者: Jiaojiao Wei,Wei Lian,Wei Zheng,Xiaoying Shang,Meiran Zhang,Tao Dai,Xueyuan Chen

来源: Journal of Rare Earths 2019年07期

年度: 2019

分类: 工程科技Ⅰ辑

专业: 化学,材料科学

单位: College of Chemistry, Fuzhou University,CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences

基金: Project supported by the CAS,SAFEA International Partnership Program for Creative Research Teams,the National Natural Science Foundation of China(21771185,11774345,21875250,21650110462),the CAS Youth Innovation Promotion Association(2016277),the Chunmiao Project of Haixi Institutes of the CAS(CMZX-2016-002),Natural Science Foundation of Fujian Province(201710018)

分类号: O657.3;TB383.1

页码: 691-698

总页数: 8

文件大小: 1526K

下载量: 7

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Sub-10 nm lanthanide-doped SrFCl nanoprobes:Controlled synthesis,optical properties and bioimaging
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