Open system synthesis of narrow-bandwidth red-fluorescent carbon quantum dots with a function of multi-metal ion sensing

Abstract

Carbon quantum dots (CQDs) are environmentally friendly phosphors. However, there have been few reports on red-emitting CQDs with narrow-bandwidths, all of which were synthesized via solvothermal methods using autoclaves. Here,...

Open system massive synthesis of narrow-band blue and green fluorescent graphene quantum dots and their application in water sensing

“…Further purification by silica gel column chromatography improved the PLQY to 64%. 27 The GQDs also exhibited negative fluorescence solvatochromism, showing blue fluorescence in highly polar solvents and green fluorescence in less polar solvents. 26 Despite the narrow fwhm, high PLQY, and multicolor luminescence achieved, the low product yield (PY) of dialysis-purified GQDs, 3%, remains a problem in the synthesis of GQDs in an open system using PG as a carbon source.…”