Yb3+/Tm3+ co-doped NaNbO3 nanocrystals as three-photon-excited luminescent nanothermometers

被引：121

作者：

Pereira, A. F. ^{[1
]}

Upendra Kumar, K. ^{[1
]}

Silva, W. F. ^{[1
]}

Santos, W. Q. ^{[1
]}

Jaque, D. ^{[1
,2
,3
]}

Jacinto, C. ^{[1
]}

机构：

[1] Univ Fed Alagoas, Inst Fis, GFFC, BR-57072970 Maceio, AL, Brazil

[2] Univ Autonoma Madrid, Dept Fis Mat, Fluorescence Imaging Grp, E-28049 Madrid, Spain

[3] Hosp Ramon & Cajal, Inst Ramon y Cajal Invest Sanitaria, E-28034 Madrid, Spain

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2015年 / 213卷

关键词：

Nanosensor; Nanothermometry; Photo-thermal agent; Nanobiophotonics; UP-CONVERSION LUMINESCENCE; OPTICAL-TEMPERATURE SENSOR; NANOPARTICLES; EMISSION; THERMOMETRY; LANTHANIDE; DEPENDENCE; CELLS; ER3+;

D O I：

10.1016/j.snb.2015.01.136

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this paper we report on Thulium/Ytterbium codoped sodium niobate (NaNbO3) colloidal nanocrystals as high resolution luminescent nanothermometers operating under three-photon excitation. The spectral shape of the Thulium ((1)G(4)-> H-3(6)) luminescence band at 480 nm after 980 nm (Ytterbium) excitation has been analyzed in detail in the biophysical temperature range. It has been found that the population redistribution among the thermally coupled stark levels could be successfully used for ratiometric thermal sensing. The thermal sensitivity of the three photon excited luminescence has been successfully used to evaluate, in a single-beam experiment, the light induced thermal loading taking place in 940 nm excited NaNbO3:Tm3+/Yb3+ nanocrystals. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：65 / 71

页数：7

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