Thiol ligand-mediated exfoliation of bulk sulfur to nanosheets and nanodots: applications in antibacterial activity

Mondal, A and Salampuriya, R and Umesh, A and De, M (2023) Thiol ligand-mediated exfoliation of bulk sulfur to nanosheets and nanodots: applications in antibacterial activity. In: Journal of Materials Chemistry B .

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Abstract

Reducing bulk materials to layers or dots results in profound alterations in their physiochemical and optoelectronic properties, leading to a wide array of applications, spanning from device manufacturing to biomedicine. In this regard, the preparation of sulfur nanomaterials has garnered significant attention due to their low toxicity. Traditional methods for sulfur nanomaterial synthesis often involve harsh reaction conditions, leaving a gap for convenient approaches to create nanomaterials, such as nanosheets (NSs) and nanodots (NDs). Herein, the mechanical exfoliation of bulk sulfur using a surfactant thiol ligand with probe sonication is reported, making a unique contribution to existing methods. In the reported method, the thiol group binds to sulfur surfaces, facilitating exfoliation and stabilization, while the hydrophilic ends provide functional groups for exfoliated nanomaterials. Exfoliation can yield either nanosheets or nanodots, depending on the thiol ligand and exfoliation time. This approach offers the opportunity to exfoliate bulk sulfur using bioactive thiol ligands. With this goal in mind, bulk sulfur was exfoliated with 4-mercaptophenylboronic acid (BA) to target Gram-positive bacteria. This innovative exfoliation strategy of bulk sulfur using thiol ligands holds immense promise for synthesizing functionalized sulfur nanomaterials with wide-ranging applications, particularly in biomedicine. © 2024 The Royal Society of Chemistry.

Item Type:	Journal Article
Publication:	Journal of Materials Chemistry B
Publisher:	Royal Society of Chemistry
Additional Information:	The copyright for this article belongs to author
Keywords:	Bacteria; Exfoliation (materials science); Ligands; Nanodots; Nanosheets; Nanostructured materials, Anti-bacterial activity; Bulk materials; Low toxicity; Mechanical exfoliation; Nanodots; Optoelectronics property; Physio-chemical properties; Probe sonication; Reaction conditions; Thiol groups, Sulfur
Department/Centre:	Division of Chemical Sciences > Organic Chemistry
Date Deposited:	01 Mar 2024 09:14
Last Modified:	01 Mar 2024 09:14
URI:	https://eprints.iisc.ac.in/id/eprint/84072

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