Er:Yb:NaY2F5O up-converting nanoparticles for sub-tissue fluorescence lifetime thermal sensing

被引：139

作者：

Savchuk, Ol. A. ^{[1
]}

Haro-Gonzalez, P. ^{[2
]}

Carvajal, J. J. ^{[1
]}

Jaque, D. ^{[2
]}

Massons, J. ^{[1
]}

Aguilo, M. ^{[1
]}

Diaz, F. ^{[1
]}

机构：

[1] Univ Rovira & Virgili, Fis & Cristallog Mat & Nanomat FiCMA FiCNA EMaS, E-43007 Tarragona, Spain

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

来源：

NANOSCALE | 2014年 / 6卷 / 16期

关键词：

TEMPERATURE-MEASUREMENTS; THERMOGRAPHIC PHOSPHORS; POLYMERIC THERMOMETER; PHOTOTHERMAL THERAPY; LUMINESCENCE; POLARITY;

D O I：

10.1039/c4nr02305f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Non-contact thermometry is essential in biomedical studies requiring thermal sensing and imaging with high thermal and spatial resolutions. In this work, we report the potential use of Er:Yb:NaYF4 and Er:Yb:NaY2F5O up-conversion nanoparticles as thermal sensors by means of lifetime based luminescent thermometry. We demonstrate how Er:Yb:NaY2F5O nanocrystals present a higher thermal sensitivity than the Er:Yb:NaYF4 ones and that their lifetime thermal coefficient is comparable to those corresponding to other nano-sized luminescent systems already used for high resolution lifetime fluorescence thermal sensing. We evaluate the potential use of Er:Yb:NaY2F5O nanoparticles as lifetime based thermal probes by providing the first experimental evidence on sub-tissue lifetime fluorescence thermal sensing by using up-conversion nanoparticles in an ex vivo experiment.

引用

页码：9727 / 9733

页数：7

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