Selective aerobic coupling of amines to imines using solar spectrum-responsive flower-like Nen-graphene quantum dots (GQDs) decorated with 2, 4-dinitrophenylhydrazine (PH) as a photocatalyst

Kumar, N and Yadav, RK and Umar, A and Ibrahim, AA and Singh, S and Shahin, R and Singh, AP and Gupta, AK and Gupta, NK and Baeg, JO and Dwivedi, DK and Baskoutas, S (2023) Selective aerobic coupling of amines to imines using solar spectrum-responsive flower-like Nen-graphene quantum dots (GQDs) decorated with 2, 4-dinitrophenylhydrazine (PH) as a photocatalyst. In: Chemosphere, 341 .

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Abstract

Indeed, the development of ecologically benign molecular fabrication methods for highly efficient graphene quantum dots-based photocatalysts is of great significant. Graphene quantum dots-based photocatalysts have promising applications in various field, including environmental remediation, energy conversion, and splitting of water. However, ensuring resource reusability and minimizing the environmental impact are crucial considerations in the development. From this perspective, attention has also been paid to the creation of easy to make solar light harvesting graphene quantum dots-based photocatalysts for synthesising pharmaceuticals and functional imines compounds. Imines are excellent significant building blocks in pharmaceutical chemistry and excellent examples of these valuable compounds' synthetic intermediates, and the environmentally friendly oxidative synthesis of imines from amines. Therefore, herein, we designed a facile and efficient condensation route to synthesize the Nen-GQDs@PH photocatalyst. This route involves coupling of 2,4-dinitrophenylhydrazine (PH) with nitrogen-enriched graphene quantum dots (Nen-GQDs). The Nen-GQDs@PH as photocatalyst functions in a highly selective and efficient manner, leading to high amines conversion efficiency to imines (95). Our results highlight a novel and environmentally safe approach for generating highly selective imines from various types of amines, setting a new benchmark in the current research field. © 2023 Elsevier Ltd

Item Type:	Journal Article
Publication:	Chemosphere
Publisher:	Elsevier Ltd
Additional Information:	The copyright for this article belongs to the Elsevier Ltd.
Keywords:	Conversion efficiency; Environmental impact; Graphene; Graphene quantum dots; Nanocrystals; Quantum efficiency; Reusability; Semiconductor quantum dots, 4-flurobenzylamine; Aerobic; Dinitrophenylhydrazine; Environmental remediation; Fabrication method; Nitrogen-enriched; Nitrogen-enriched graphene quantum dot; Nitrogen-enriched graphene quantum dot@PH; Solar spectrum, Amines
Department/Centre:	Division of Mechanical Sciences > Centre for Sustainable Technologies (formerly ASTRA)
Date Deposited:	21 Nov 2023 08:52
Last Modified:	21 Nov 2023 08:52
URI:	https://eprints.iisc.ac.in/id/eprint/83188

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