Ratiometric Optical Thermometer Based on Dual Near-Infrared Emission in Cr3+-Doped Bismuth-Based Gallate Host

被引：259

作者：

Back, Michele ^{[1
,2
]}

Trave, Enrico ^{[2
]}

Ueda, Jumpei ^{[1
]}

Tanabe, Setsuhisa ^{[1
]}

机构：

[1] Kyoto Univ, Grad Sch Human & Environm Studies, Kyoto 6068501, Japan

[2] Ca Foscari Univ Venice, Dept Mol Sci & Nanosyst, Via Torino 155, I-30172 Venice, Italy

来源：

CHEMISTRY OF MATERIALS | 2016年 / 28卷 / 22期

关键词：

UPCONVERTING NANOPARTICLES; ORGANIC FRAMEWORK; GLASS-CERAMICS; TEMPERATURE; LUMINESCENCE; LIFETIME; EU3+; RED; SPECTROSCOPY; RANGE;

D O I：

10.1021/acs.chemmater.6b03625

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Detailed spectroscopic analysis of the electronic configuration of Cr3+ in Bi2Ga4O9 is reported. The material exhibits unique luminescent properties arising from the crystal field experienced by Cr3+, with simultaneous strong sharp and broadband near-infrared emissions from the E-2 and T-4(2) excited states, in a wide range of temperature. The system displays dual near-infrared emission characterized by a remarkable thermal sensitivity over the whole explored range of temperatures, reaching a value of 0.7%.K-1 in the physiological range. Moreover, the possibility to absorb and emit in the first biological window, allows one to consider the system as a new promising candidate for ratiometric fluorescent thermal sensing in biotechnological applications.

引用

页码：8347 / 8356

页数：10

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