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Temperature‐Dependent Dual Emission from Sucrose‐Derived Carbon Nanodots: A Ratiometric Fluorescent Thermometer
Author(s) -
Gan Zhixing,
Hao Yanling,
Shan Yun
Publication year - 2016
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.201500228
Subject(s) - thermometer , photoluminescence , nanodot , fluorescence , quenching (fluorescence) , materials science , aqueous solution , excited state , carbon fibers , hydrothermal circulation , analytical chemistry (journal) , photochemistry , optoelectronics , chemistry , optics , chemical engineering , atomic physics , physics , chromatography , quantum mechanics , composite number , composite material , engineering
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 % °C −1 .