Premium
Stable Fluorescence of Green‐Emitting Carbon Nanodots as a Potential Nanothermometer in Biological Media
Author(s) -
Jiang Kaili,
Wu Jiapeng,
Wu Qian,
Wang Xiaojie,
Wang Chuanxi,
Li Yunxing
Publication year - 2017
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.201600197
Subject(s) - fluorescence , nanodot , quantum yield , biocompatibility , materials science , carbon fibers , nanotechnology , analytical chemistry (journal) , chemistry , optics , chromatography , composite material , physics , composite number , metallurgy
Temperature measurement in biology and medical diagnostics is of great importance. Herein, a novel carbon nanodot (CND) based fluorescent nanothermometry device for spatially resolved temperature measurements is demonstrated. The fluorescence CNDs are prepared by a simple one‐pot solvothermal method using sucrose as carbon source. Resultant CNDs show stable green fluorescence at 520 nm with high quantum yield (≈6%). The fluorescence of resultant CNDs exhibits a reversible linear response to temperature in a wide range of 20–85 °C. Moreover, the temperature resolution better than 0.5 °C and high sensitive variation of ≈1.3% °C −1 are observed in a broad physiological temperature range of 20–40 °C. Therefore, the as‐prepared CNDs possess high water solubility, stable fluorescence, small size, and good biocompatibility, which make them promising candidate for thermometry and cell imaging in biological media.