Monolayered transition metal dichalcogenides (TMDs) were exfoliated by an amphiphilic polymer in water under mild ultrasonication. Exfoliated TMDs had a thickness of 1.4 nm and a lateral size of 80 nm, indicating that they were monolayers. The exfoliated TMDs were stably dispersed in water without aggregation for a while. In addition, as-prepared TMDs clearly exhibited A-excitonic electron transitions in visible range, and emitted very strong and stable photoluminescence, indicating that the polymer-assisted exfoliation was very effective to produce monolayered TMDs in aqueous solution.

Effective exfoliation of transition metal dichalcogenides in aqueous solution

254th National Meeting (2017)

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