Yuwu Chi

TL;DR: A new type and high density of surface state of GQDs arises, leading to high yields (more than 70 %) and excitation-independent emission and FLQY = fluorescence quantum yield.

TL;DR: An easy bottom-up method for the preparation of photoluminescent (PL) graphene quantum dots (GQDs) and graphene oxide (GO) has been developed by tuning the carbonization degree of citric acid and dispersing the carbonized products into alkaline solutions as mentioned in this paper.

TL;DR: It is demonstrated that this facile methodology can offer a rapid, reliable, and selective detection of Cu(2+) with a detection limit as low as 6 nM and a dynamic range from 10 to 1100 nM.

TL;DR: Water-soluble carbon nanocrystals with electrochemiluminescence activity were released into aqueous solution from a graphite rod by applying a scanning potential to suggest promising applications of CNCs in the development of new types of biosensors and display devices in the future on the basis of their strong and stable ECL emission.

TL;DR: In this paper, a facile, low cost and high yield method has been developed to prepare single and multi-layer graphene quantum dots (GQDs) from XC-72 carbon black by chemical oxidation.