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Influence of a Tunable Band Gap on Photoredox Catalysis by Various Two-Dimensional Transition-Metal Dichalcogenides

Jaiswal, K and Girish, YR and De, M (2020) Influence of a Tunable Band Gap on Photoredox Catalysis by Various Two-Dimensional Transition-Metal Dichalcogenides. In: ACS Applied Nano Materials, 3 (1). pp. 84-93.

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Official URL: https://doi.org/10.1021/acsanm.9b01711


Transition-metal dichalcogenides (TMDs) show a diverse range of properties and are highly promising for organic transformations owing to their large surface-to-volume ratio that confers good selectivity and sensitivity by increasing the number of active sites. Herein, we have prepared the semiconducting (2H) and mixed-phase (2D) TMDs by mechanical and chemical exfoliation, respectively. The materials have been characterized by various forms of spectroscopy and microscopy. Further, we have explored the potential of the four classes of TMDs to participate in aerobic oxidative coupling of amines to imines upon irradiation with visible light. Our efforts are directed toward determining the most suitable material for this reaction at conditions that are not too harsh. 2H WSe2 is most effective for the transformation, most likely because of a suitable band gap. Given their broad applications, these materials can be of interest in several industrial synthetic pathways as well

Item Type: Journal Article
Publication: ACS Applied Nano Materials
Publisher: American Chemical Society
Additional Information: The copyright for this article belongs to the American Chemical Society
Keywords: Amines; Catalysis; Photocatalysis; Selenium compounds; Transition metals; Tungsten compounds, Chemical exfoliations; Heterogeneous electron transfer; Number of active sites; Organic transformations; photoredox; Selectivity and sensitivity; TMDs; Transition metal dichalcogenides, Energy gap
Department/Centre: Division of Chemical Sciences > Organic Chemistry
Date Deposited: 02 Feb 2023 09:51
Last Modified: 02 Feb 2023 09:51
URI: https://eprints.iisc.ac.in/id/eprint/79763

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