Improving 800 nm Triggered Upconversion Emission for Lanthanide-Doped CaF2 Nanoparticles through Sodium Ion Doping

doi:10.1021/acs.jpcc.7b05639

	Improving 800 nm Triggered Upconversion Emission for Lanthanide-Doped CaF2 Nanoparticles through Sodium Ion Doping
	Gu, ZJ; Ma, Y; Zhai, TY; Xu, B; He, HM; Gu ZJ(谷战军); Jin, SY
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2017
卷号	121 期号:33 页码:18280-18287
ISSN号	1932-7447
DOI	10.1021/acs.jpcc.7b05639
文献子类	Article
英文摘要	Lanthanide ions (Ln(3+))-doped CaF2 luminescent nanoparticles exhibit unique optical properties and represent promising candidates for bioapplications; however, their inherent weak luminescence intensity greatly limits their application, especially for Nd3+-sensitized ones. We have doped Ln(3+) ions along with Na+ ion into CaF2 lattice to maintain charge neutrality and investigated the influence of Na+ ion on the 800 nm triggered upconversion process. As compared with Na+-free (shell layer) nanoparticles, the crystallinity of Na+-ion-codoped ones has been improved greatly, and the average lifetimes of the excited Nd3+, Yb3+, and Er3+ states have been prolonged after Na+ ion codoping in the sensitizing shell. Thus the energy-transfer efficiency from sensitizers (Nd3+) to activators (Er3+) has been increased by 67%. As a result, the upconversion luminescence intensity of the nanoparticles with suitable Na+ doping reaches 67 times higher than Na+-free nanoparticles upon 800 nm irradiation, although fewer Ln(3+) ions were doped into CaF2 in this case. The as-synthesized CaF2:Yb/Er@CaF2:Nd/Yb core-shell structured (CS) UCNPs may be good candidates as excellent imaging nanoprobes because of their good biocompatibility.
WOS关键词	IN-VIVO BIOAPPLICATIONS ; NEAR-INFRARED LIGHT ; PHOTODYNAMIC THERAPY ; SHELL NANOPARTICLES ; BIOIMAGING PROBES ; ENERGY-TRANSFER ; LUMINESCENT ; ND3+ ; NANOCRYSTALS ; NANOMATERIALS
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
语种	英语
WOS记录号	WOS:000408598600077
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285262]
专题	高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Gu, ZJ,Ma, Y,Zhai, TY,et al. Improving 800 nm Triggered Upconversion Emission for Lanthanide-Doped CaF2 Nanoparticles through Sodium Ion Doping[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2017,121(33):18280-18287.
APA	Gu, ZJ.,Ma, Y.,Zhai, TY.,Xu, B.,He, HM.,...&Jin, SY.(2017).Improving 800 nm Triggered Upconversion Emission for Lanthanide-Doped CaF2 Nanoparticles through Sodium Ion Doping.JOURNAL OF PHYSICAL CHEMISTRY C,121(33),18280-18287.
MLA	Gu, ZJ,et al."Improving 800 nm Triggered Upconversion Emission for Lanthanide-Doped CaF2 Nanoparticles through Sodium Ion Doping".JOURNAL OF PHYSICAL CHEMISTRY C 121.33(2017):18280-18287.