Upconversion luminescent nanoheater based on NaGd(MoO4)2: Yb3+/Tm3+ nanocrystals: Surfactant-free solvothermal synthesis, upconversion photoluminescence and photothermal conversion

被引：12

作者：

Li, Anming ^{[1
,2
]}

Li, Zhaohan ^{[1
]}

Pan, Lijun ^{[1
]}

Wang, Zhiwen ^{[1
]}

Chen, Weiguang ^{[1
]}

Shao, Qinqin ^{[1
]}

Wu, Bingjie ^{[1
]}

Tang, Yanan ^{[1
]}

机构：

[1] Zhengzhou Normal Univ, Sch Phys & Elect Engn, Lab Upconvers Luminescent Micro Nanocrystals, Zhengzhou 450044, Peoples R China

[2] Jinan Univ, Dept Optoelect Engn, Guangzhou 510632, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2022年 / 904卷

基金：

中国国家自然科学基金;

关键词：

Nanoheater; Upconversion luminescence; Photothermal conversion; Nanocrystals; Surfactant-free synthesis; MECHANISM; TM3+;

D O I：

10.1016/j.jallcom.2022.164087

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：

Multifunctional upconversion luminescent nanoheaters are realized based on NaGd(MoO4)(2):Yb3+/Tm3+ nanocrystals synthesized by surfactant-free solvothermal method. The structure, morphology and composition of the nanocrystals are analysed by XRD, SEM, EDS, TEM, HRTEM and SAED techniques. Under 980 nm irradiation, NaGd(MoO4)(2):Yb3+/Tm3+ nanocrystals emit blue luminescence with emission peaks located in the blue and near-infrared spectral regions. The electronic transition processes for the upconversion luminescence are discussed based on the excitation power-dependent upconversion luminescence, luminescent dynamics and Yb3+/Tm3+ energy levels. The nanocrystals show efficient photothermal conversion after irradiated by 980 nm laser. The photothermal conversion slope efficiency for NaGd (MoO4)(2):Yb3+/Tm3+ nanocrystals irradiated by 980 nm laser for 10 s duration is 17.43 degrees C/W for 10 mol% Yb3+ doping and 43.64 degrees C/W for 15 mol% Yb3+ doping. Multifunctional luminescent nanoheater NaGd (MoO4)(2):Yb3+/Tm3+ nanocrystals exhibit both upconversion photoluminescence and photothermal conversion capabilities, and are promising candidates for temperature self-monitoring photothermal therapy or other biological applications. (C) 2022 Elsevier B.V. All rights reserved.

引用

页数：7

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