Post-functionalization of sulfur quantum dots and their aggregation-dependent antibacterial activity

Mondal, Avijit; Pandit, Subrata; Sahoo, Jagabandhu; Subramaniam, Yogeswari; De, Mrinmoy

doi:10.1039/d3nr04287a

Cited by 8 publications

(3 citation statements)

References 83 publications

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“…Sublimed sulfur and p-phenylenediamine as the ratio of 1:1 were taken and hydrothermally heated at 200 ºC for 24 hours in the presence of TEG. For getting neutral charge hydroxyl group was incorporated, carboxyl group was incorporated for negative charge and quaternary ammonium group was incorporated for positive charge 43 .…”

Section: Fig 1: Applications Of Sulfur Quantum Dotsmentioning

confidence: 99%

“…Functionalized SQDs were prepared by using ligands synthesized with different head groups containing different charges. There was high antibacterial activity against Gram-positive bacteria Staphylococcus aureus and Enterococcus faecalis by using positively charged SQDs with a very low concentration of 10-25 ng/mL 43 . ethylbenzothiazoline-6-sulfonic acid) (ABTS) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging activity of SQDs compared to the widely used antioxidant ascorbic acid .…”

Section: Characterization Of Sulfur Quantum Dotsmentioning

confidence: 99%

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2024

IJPSR

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Day by day it is challenging to prepare a chemical reagent against antimicrobial resistant pathogenic for pharmaceutical and food sector. There are several types of quantum dots are invented among them Sulfur Quantum Dots (SQDs) a new type of luminescent quantum dots which is prepared from unused sublimed sulfur can be replaced for these purposes. SQDs are highly water soluble, low toxicity and have an antimicrobial and antioxidant activity. There are several uses of this quantum dots, but in this review the synthesis method and their comparison, antibacterial and antifungal activity and antioxidant activity are described from its invention to present state. SQDs with packaging film exhibited effective antimicrobial effects especially against foodborne microorganisms caused by the production of reactive oxygen species (ROS). SQDs could be a potential agent for food packaging, disinfectant for fabric and increase the shelf life of food. INTRODUCTION:Element sulfur is one of the most abundant and extensively used substances on earth. There is a huge demand of sulfur for various fields, such as sulfuric acid production, medicine, rubber production, lithium-sulfur batteries and agriculture. However, a large number of sulfur has not been used fully utilized, which produce waste of sulfur resources. So, it is a demand of time to develop novel pathway for the utilization of elemental sulfur in an efficient way for the economic and environmental perspectives 1, 2 .

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Section: Fig 1: Applications Of Sulfur Quantum Dotsmentioning

confidence: 99%

Section: Characterization Of Sulfur Quantum Dotsmentioning

confidence: 99%

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2024

IJPSR

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“…Recently, sulfur-based nanomaterials have garnered noteworthy attention due to their versatile applications, ranging from the advancement of Li–S batteries to antimicrobial uses. 24–29 Most existing synthetic methods for creating sulfur nanomaterials involve harsh reaction conditions, such as hydrothermal methods, and the usage of corrosive chemicals. 30–32 Until now, there have been limited investigations focused on stabilizing sulfur nanomaterials, particularly nanosheets and nanodots, under mild conditions.…”

Section: Introductionmentioning

confidence: 99%

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

Mondal,

Salampuriya,

Umesh

et al. 2024

J. Mater. Chem. B

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Development of Nanomaterials‐Based Agents for Selective Antibacterial Activity

Kaur,

Sahoo,

2024

ChemBioChem

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Bacterial infections continue to threaten public health due to limitations in rapid and accurate diagnostic techniques. While broad‐spectrum antibiotics offer empirical treatment, their overuse has fuelled the emergence of antimicrobial resistance (AMR) pathogens, posing a critical global public health challenge. In this critical scenario, nanomaterial‐based antibacterial agents emerge as a promising solution to combat bacteria and inhibit their proliferation. However, selective elimination of pathogenic bacteria is paramount. This review highlights recent advancements in developing nanomaterials for selective antibacterial activity. We categorize these agents based on their mode of action, exploring how they selectively interact with bacteria and their potential antibacterial mechanisms. This review offers crucial insights for researchers exploring the potential of nanotechnology to address the growing threat of AMR.

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Post-functionalization of sulfur quantum dots and their aggregation-dependent antibacterial activity

Abstract: Sulfur quantum dots (SQDs) exhibited potent antibacterial activity upon surface functionalization. Yet, hydrophobic ligand attachment diminished efficacy. This study underscores the impact of hydrophobicity on antibacterial agent development.

Cited by 8 publications

References 83 publications

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

Development of Nanomaterials‐Based Agents for Selective Antibacterial Activity

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