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Facile synthesis of optical pH-sensitive molybdenum disulfide quantum dots
Shan Zhang1, Xiaofang Jia2, Erkang Wang2
1State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China. ekwang@ciac.ac.cn and Graduate School of the Chinese Academy of Sciences, Beijing, 100039, P. R. China.
Abstract:
An effective fabrication of MoS2 quantum dots (QDs) has been developed using alkali metal-intercalation and exfoliation. The obtained MoS2 QDs are monolayers with a uniform lateral size of 4.26 ± 0.96 nm, which exhibit distinct blue fluorescence with a quantum yield of 2.28%, robust dispersibility, storage stability and pH dependent optical properties.
