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Scientist develop a method to convert microplastics and into luminescent particles similar to quantum dots

C–H activation in long-chain organic molecules remains largely unexplored. Here, the authors report light-driven C–H activation mediated by 2D TMDCs and the resultant synthesis of luminescent carbon dots.

Here, we report light-driven C–H activation in complex organic materials mediated by 2D transition metal dichalcogenides (TMDCs) and the resultant solid-state synthesis of luminescent carbon dots in a spatially-resolved fashion. To verify the theoretical hypothesis, we conducted control experiments on mechanically exfoliated WSe 2 flakes with fewer surface defects 41, and the results show that a much higher optical power is required for this reaction to occur (Supplementary Fig. These theoretical analyses and experiments indicate that the Se vacancy and O substitution in WSe 2 can both lead to a more facile C–H activation capacity due to either higher reactivity of a defected surface or an O-promotion effect.

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