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Improving 800 nm Triggered Upconversion Emission for Lanthanide-Doped CaF2 Nanoparticles through Sodium Ion Doping
Xu, Bing1; He, Huimei1; Gu, Zhanjun2,3; Jin, Shengye4; Ma, Ying1; Zhai, Tianyou1
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
2017-08-24
DOI10.1021/acs.jpcc.7b05639
Volume121Issue:33Pages:18280-18287
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS KeywordIN-VIVO BIOAPPLICATIONS ; NEAR-INFRARED LIGHT ; PHOTODYNAMIC THERAPY ; SHELL NANOPARTICLES ; BIOIMAGING PROBES ; ENERGY-TRANSFER ; LUMINESCENT ; ND3+ ; NANOCRYSTALS ; NANOMATERIALS
AbstractLanthanide 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.
Language英语
WOS IDWOS:000408598600077
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/150004
Collection中国科学院大连化学物理研究所
Affiliation1.Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & & Mould Technol, Wuhan 430074, Hubei, Peoples R China
2.Chinese Acad Sci, Natl Ctr Nanosci & Technol, Key Lab Biomed Effects Nanomat & Nanosafety, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Natl Ctr Nanosci & Technol, Inst High Energy Phys, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
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GB/T 7714
Xu, Bing,He, Huimei,Gu, Zhanjun,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 Xu, Bing,He, Huimei,Gu, Zhanjun,Jin, Shengye,Ma, Ying,&Zhai, Tianyou.(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 Xu, Bing,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.
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