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论文类型：期刊论文

发表时间：2019-02-15

发表刊物：SENSORS AND ACTUATORS B-CHEMICAL

收录刊物：SCIE、Scopus

卷号：281

页面范围：905-911

ISSN号：0925-4005

关键字：Hydrophilic carbon dots; Organophilic carbon dots; Fluorescent probe; Au3+ biosensing; White light-emitting devices

摘要：Hydrophilic and organophilic carbon dots (HCDs and OCDs) have been synthesized simultaneously by simple one-pot solvothermal carbonization of methylene blue and sulfuric acid using ethanol as the solvent. The synthesized HCDs and OCDs show evidently different properties, which can be respectively dissolved in distilled water and ethanol, exhibiting bright white and blue fluorescence under an UV illumination of 365 nm, and their fluorescence quantum yield reach up to 16.5% and 21.1%, respectively. The different functional groups on the surface are responsible for the distinction in fluorescence and solubility of these two kinds of carbon dots. Especially, HCDs can not only be used in visualizing detection of Au3+ in PC12 cells, but also fabricating the white-light-emitting diodes, implying their potential in exploiting low-cost CDs as replacements of phosphors for light-emitting devices.