A rapid microwave synthesis of green-emissive carbon dots with solid-state fluorescence and pH-sensitive properties.

ABSTRACT: The emerging carbon quantum dots (CQDs) have been attracting significant attention for their prominent fluorescence, excellent stability and outstanding biocompatibility. Here, we report a facile one-step synthesis of highly fluorescent CQDs by using phthalic acid and triethylenediamine hexahydrate as precursors through a simple microwave-assisted method. The reaction time needed is only 60 s, which is less time-consuming than most previous reports. The phthalic acid with a benzene ring can improve the photoluminescence properties of CQDs as it can provide foreign sp² conjugating units, and then finally result in long-wavelength emission. The synthesized CQDs were fully characterized by transmission electron microscopy, X-ray photoelectron spectroscopy and Fourier transfo

SUBMITTER: Yu T 

PROVIDER: S-EPMC6083653 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature