Dual-Mode Optical Thermometry Based on the Fluorescence Intensity Ratio Excited by a 915 nm Wavelength in LuVO4:Yb3+/Er-3(+)@SiO2 Nanoparticles

doi:10.1021/acs.inorgchem.9b01229

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	Dual-Mode Optical Thermometry Based on the Fluorescence Intensity Ratio Excited by a 915 nm Wavelength in LuVO4:Yb3+/Er-3(+)@SiO2 Nanoparticles
	G.T.Xiang; X.T.Liu; J.H.Zhang; Z.Liu; W.Liu; Y.Ma; S.Jiang
	2019
发表期刊	Inorganic Chemistry
ISSN	0020-1669
卷号	58 期号:12 页码:8245-8252
摘要	The optical thermometry properties of LuVO4:Yb3+/Er-3(+)@SiO2 nanoparticles (NPs) are studied in detail. In order to avoid the overheating effect for biological tissue caused by 980 nm radiation, 915 nm is employed as the excitation wavelength to investigate the upconversion (UC) and optical thermometry properties of the as-prepared NPs. In the visible region, the fluorescence intensity ratio (FIR) of the( 2)H(11/2) and S-4(3/2) levels of Er(3+)is utilized to measure the temperature. The relative sensitivity S R in this case can be written as 1077/T 2 , which is higher than that of beta-NaYF4:Yb3+/Er-3(+) NPs, beta-NaLuF4:Yb3+/Er3+ NPs, YVO4:Yb3+/Er3+ NPs, etc. In the near-infrared (NIR) region, an anomalous enhancement of the I-4(13/2) -> I-4(15/2) transition with increasing temperature is observed. What is more, the FIR of peak 2 (located at 1496 nm) to peak 1 (located at 1527 nm) is changed regularly with increasing temperature, which can also be used to measure the temperature. The combination of the visible and NIR regions for optical thermometry can provide a self-referenced temperature determination to make measurement of the temperature more precise. In addition, the UC mechanism is also investigated, especially the population route of the F-4(9/2) level of Er3+. Through analysis of the decay curves, we propose that the dominant way for populating the Er3+ F-4(9/2) level is energy transfer from the Yb3+ F-2(5/2) level to the Er3+4I13/2 level. All of the results reveal the potential application of LuVO4:Yb3+/Er-3(+)@SiO2 NPs for dual-mode optical thermometry.
关键词	up-conversion nanoparticles,temperature sensing properties,photodynamic therapy,yb3+,luminescence,emission,range,Chemistry
DOI	10.1021/acs.inorgchem.9b01229
收录类别	SCI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/62930
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	G.T.Xiang,X.T.Liu,J.H.Zhang,et al. Dual-Mode Optical Thermometry Based on the Fluorescence Intensity Ratio Excited by a 915 nm Wavelength in LuVO4:Yb3+/Er-3(+)@SiO2 Nanoparticles[J]. Inorganic Chemistry,2019,58(12):8245-8252.
APA	G.T.Xiang.,X.T.Liu.,J.H.Zhang.,Z.Liu.,W.Liu.,...&S.Jiang.(2019).Dual-Mode Optical Thermometry Based on the Fluorescence Intensity Ratio Excited by a 915 nm Wavelength in LuVO4:Yb3+/Er-3(+)@SiO2 Nanoparticles.Inorganic Chemistry,58(12),8245-8252.
MLA	G.T.Xiang,et al."Dual-Mode Optical Thermometry Based on the Fluorescence Intensity Ratio Excited by a 915 nm Wavelength in LuVO4:Yb3+/Er-3(+)@SiO2 Nanoparticles".Inorganic Chemistry 58.12(2019):8245-8252.

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