Temperature-Dependent Dual Emission from Sucrose-Derived Carbon Nanodots: A Ratiometric Fluorescent Thermometer

被引：18

作者：

Gan, Zhixing ^{[1
]}

Hao, Yanling ^{[2
]}

Shan, Yun ^{[3
]}

机构：

[1] Nanjing Normal Univ, Sch Phys Sci & Technol, Key Lab Optoelect Technol Jiangsu Prov, Nanjing 210023, Jiangsu, Peoples R China

[2] XingYi Normal Univ Nationalities, Dept Phys, Xingyi 562400, Guizhou, Peoples R China

[3] Nanjing Xiaozhuang Univ, Sch Environm Sci, Nanjing 211171, Jiangsu, Peoples R China

来源：

CHEMNANOMAT | 2016年 / 2卷 / 03期

基金：

中国博士后科学基金;

关键词：

carbon nanodots; defects; photoluminescence; ratiometric sensors; GRAPHENE QUANTUM DOTS; PHOTOLUMINESCENCE; MECHANISM; SENSOR; CELLS; LIGHT;

D O I：

10.1002/cnma.201500228

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Carbon nanodots (CNDs) with conspicuous dual emission (at 450 and 517 nm) were fabricated by hydrothermal treatment of aqueous sucrose solution. The temperature-dependent photoluminescence (PL) and time-resolved PL were investigated. The trapping of excited electrons by the nonradiative defects should substantially account for the PL quenching as the temperature increases. The sucrose-derived CNDs show great potential for applications as ratiometric fluorescent thermometers with a sensitivity of approximately 2.15% degrees C-1.

引用

页码：171 / 175

页数：5

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