Inherently Eu2+/Eu3+ Codoped Sc2O3 Nanoparticles as High-Performance Nanothermometers

被引:241
作者
Pan, Yue [1 ,2 ]
Xie, Xiaoji [1 ]
Huang, Qianwen [1 ]
Gao, Chao [1 ]
Wang, Yangbo [1 ]
Wang, Lingxiao [1 ]
Yang, Bingxiao [1 ]
Su, Haiquan [2 ]
Huang, Ling [1 ]
Huang, Wei [1 ]
机构
[1] Nanjing Tech Univ, Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM, Key Lab Flexible Elect KLOFE, IAM, 30 South Puzhu Rd, Nanjing 211816, Jiangsu, Peoples R China
[2] Inner Mongolia Univ, Sch Chem & Chem Engn, 235 West Daxue Rd, Hohhot 010021, Peoples R China
关键词
Eu2+; in situ reduction; nanothermometers; Sc2O3; ORGANIC FRAMEWORK THERMOMETER; INORGANIC-COMPOUNDS; DUAL EMISSION; TEMPERATURE; PHOSPHOR; PHOTOLUMINESCENCE; NANOCRYSTALS; REDUCTION; EU2+; TRANSITION;
D O I
10.1002/adma.201705256
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Luminescent nanothermometers have shown competitive superiority for contactless and noninvasive temperature probing especially at the nanoscale. Herein, we report the inherently Eu2+/Eu3+ codoped Sc2O3 nanoparticles synthesized via a one-step and controllable thermolysis reaction where Eu3+ is in-situ reduced to Eu2+ by oleylamine. The stable luminescence emission of Eu3+ as internal standard and the sensitive response of Eu2+ emission to temperature as probe comprise a perfect ratiometric nanothermometer with wide-range temperature probing (77-267 K), high repeatability (>99.94%), and high relative sensitivity (3.06% K-1 at 267 K). The in situ reduction of Eu3+ to Eu2+ ensures both uniform distribution in the crystal lattice and simultaneous response upon light excitation of Eu2+/Eu3+. To widen this concept, Tb3+ is codoped as additional internal reference for tunable temperature probing range.
引用
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页数:6
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