Turmeric carbon quantum dots enhanced chitosan nanocomposite films based on photodynamic inactivation technology for antibacterial food packaging

Carbohydrate Polymers, Journal Year: 2023, Volume and Issue: 311, P. 120784 - 120784

Published: March 8, 2023

Language: Английский

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Friends against the Foe: Synergistic Photothermal and Photodynamic Therapy against Bacterial Infections

Pharmaceutics, Journal Year: 2023, Volume and Issue: 15(4), P. 1116 - 1116

Published: March 31, 2023

Multidrug-resistant (MDR) bacteria are rapidly emerging, coupled with the failure of current antibiotic therapy; thus, new alternatives for effectively treating infections caused by MDR required. Hyperthermia-mediated photothermal therapy (PTT) and reactive oxygen species (ROS)-mediated photodynamic (PDT) have attracted extensive attention as antibacterial therapies owing to advantages such low invasiveness, toxicity, likelihood causing bacterial resistance. However, both strategies notable drawbacks, including high temperature requirements PTT weak ability PDT-derived ROS penetrate target cells. To overcome these limitations, a combination PDT has been used against bacteria. In this review, we discuss unique benefits limitations The mechanisms underlying synergistic effects PTT–PDT also discussed. Furthermore, introduced advancements in methods using nano-based agents treat Finally, highlight existing challenges future perspectives We believe that review will encourage PTT- PDT-based research can be referenced clinical applications.

Language: Английский

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Fluorescent carbon quantum dots with controllable physicochemical properties fantastic for emerging applications: A review

Carbon Neutralization, Journal Year: 2024, Volume and Issue: 3(2), P. 245 - 284

Published: March 1, 2024

Abstract Carbon quantum dots (CQDs) have emerged as prominent contenders in the realm of luminescent nanomaterials over past decade owing to their tunable optical properties, robust photostability, versatile surface functionalization and doping potential, low toxicity, straightforward synthesis utilizing environmentally friendly precursors. In this review, we commence with a concise introduction, presenting both top‐down bottom‐up strategies for eco‐friendly CQDs. Subsequently, delve into comprehensive examination CQDs' structure characteristics, encompassing ultraviolet–visible absorption confinement effects, state emissions contributing room‐temperature photoluminescence (PL). This review proceeds elucidate recent advancements modification CQDs, specifically focusing on oxidation, passivation, incorporation heteroatoms. These serve afford control physicochemical facilitating enhancement PL through decoration highly visible‐responsive is achieved by suppressing nonradiative recombination electron‐hole pairs, enabling red/blue shifts CQDs generation full‐color emission spectrum, regulating band‐gap states broaden photoabsorption range. Finally, offer an overview most developments applications fluorescent emphasizing utility biomedicine, sensors, lighting, displays, well photocatalysis.

Language: Английский

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Therapeutic contact lenses for the treatment of corneal and ocular surface diseases: Advances in extended and targeted drug delivery

International Journal of Pharmaceutics, Journal Year: 2023, Volume and Issue: 638, P. 122740 - 122740

Published: Feb. 20, 2023

Language: Английский

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Antimicrobial carbon materials-based quantum dots: From synthesis strategies to antibacterial properties for diagnostic and therapeutic applications in wound healing

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 522, P. 216211 - 216211

Published: Sept. 18, 2024

Language: Английский

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A Comprehensive Review on Nitrogen-Doped Carbon Dots for Antibacterial Applications

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: unknown, P. 114444 - 114444

Published: Oct. 1, 2024

Language: Английский

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Carbon dots for photothermal applications

Frontiers in Chemistry, Journal Year: 2022, Volume and Issue: 10

Published: Oct. 12, 2022

Carbon dots are zero-dimensional nanomaterials that have garnered significant research interest due to their distinct optical properties, biocompatibility, low fabrication cost, and eco-friendliness. Recently, light-to-heat conversion ability has led several novel photothermal applications. In this minireview, we categorize describe the application of carbon along with methods incorporated enhance efficiency. We also discuss possible mechanisms by which effect is realized in these carbon-based nanoparticles. Taken together, hope provide a comprehensive landscape highlighting promising directions for using

Language: Английский

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Caffeic acid-grafted chitosan/sodium alginate/nanoclay-based multifunctional 3D-printed hybrid scaffolds for local drug release therapy after breast cancer surgery

Carbohydrate Polymers, Journal Year: 2023, Volume and Issue: 324, P. 121441 - 121441

Published: Oct. 4, 2023

Language: Английский

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Carbon Dots in Photodynamic/Photothermal Antimicrobial Therapy

Nanomaterials, Journal Year: 2024, Volume and Issue: 14(15), P. 1250 - 1250

Published: July 25, 2024

Antimicrobial resistance (AMR) presents an escalating global challenge as conventional antibiotic treatments become less effective. In response, photodynamic therapy (PDT) and photothermal (PTT) have emerged promising alternatives. While rooted in ancient practices, these methods evolved with modern innovations, particularly through the integration of lasers, refining their efficacy. PDT harnesses photosensitizers to generate reactive oxygen species (ROS), which are detrimental microbial cells, whereas PTT relies on heat induce cellular damage. The key effectiveness lies utilization photosensitizers, especially when integrated into nano- or micron-scale supports, amplify ROS production enhance antimicrobial activity. Over last decade, carbon dots (CDs) a highly nanomaterial, attracting increasing attention owing distinctive properties versatile applications, including PTT. They can not only function but also synergistically combine other overall This review explores recent advancements CDs, underscoring significance potential reshaping advanced therapeutics.

Language: Английский

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Antimicrobial activity and mechanisms of carbon quantum dot decorated modified zinc oxide nanoparticles against oral pathogenic bacteria

Results in Chemistry, Journal Year: 2024, Volume and Issue: 9, P. 101655 - 101655

Published: July 1, 2024

Caries represents one of the most prevalent bacterial infectious diseases in oral cavity. Over decades, researchers have been actively seeking nanomaterials capable inhibiting pathogenic bacteria. We utilized a one-pot hydrothermal method to synthesize CQDs with multicolor luminescence and CQD-loaded ZnO composite nanomaterials. FE-SEM revealed that rod-like structure CQDs/ZnO becomes finer increased content. XRD XPS confirmed presence all components within nanocomposites. compared antimicrobial activities ZnO, 7.7% 14.3% against Streptococcus mutans, Enterococcus faecalis, Escherichia coli, Staphylococcus aureus. The exhibited effective antibacterial activity. ONPG assays demonstrated disrupted membrane alters permeability. ESR, DPBF ROS assayed further 1O2 produced by accumulated at cell disrupts its structure.

Language: Английский

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