Novel photocatalytic carbon dots: efficiently inhibiting amyloid aggregation and quickly disaggregating amyloid aggregates

Nanoscale, Год журнала: 2024, Номер 16(16), С. 8074 - 8089

Опубликована: Янв. 1, 2024

Novel photocatalytic carbon dots: efficiently inhibiting amyloid aggregation, quickly disaggregating aggregates and alleviating Aβ42-induced cytotoxicity.

Язык: Английский

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Single‐Atom Iridium‐doped Carbon Dots Nanozyme with High Peroxidase‐Like Activity as Colorimetric Sensors for Multimodal Detection of Mercury Ions

Small, Год журнала: 2025, Номер unknown

Опубликована: Янв. 16, 2025

Nanozyme-based colorimetric sensors are promising approaches for environmental monitoring, food safety, and medical diagnostics. However, developing novel nanozymes that exhibit high catalytic activity, good dispersion in aqueous solution, sensitivity, selectivity, stability is challenging. In this study, the first time, single-atom iridium-doped carbon dot (SA Ir-CDs) synthesized via a simple situ pyrolysis process. Doping dots with iridium form of single atoms to achieve maximum atomic utilization not only enhances peroxidase (POD)-like activity 178.81 U mg-1 but also improves dispersibility solutions over 30 days. Hence, SA Ir-CD platform developed mercury ions (Hg2+) detection exhibited linear relationship from 0.01 10 µm limit 4.4 nm. Notably, changes color can be observed through naked eye smartphone, enabling convenient field onsite monitoring without need sophisticated analytical equipment. an approach fabricating metal-based POD-like developed, new effective easy-to-use sensor Hg2+ constructed.

Язык: Английский

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Antimicrobial properties of carbon “quantum” dots for food safety applications

Journal of Nanoparticle Research, Год журнала: 2025, Номер 27(2)

Опубликована: Янв. 31, 2025

Abstract Carbon dots represent a rapidly advancing and expanding research field, with large number of literature reports on their potential technological applications including those relevant to food safety. In this article, the dot samples prepared by deliberate chemical functionalization preexisting small carbon nanoparticles or thermal carbonization various organic precursors under different processing conditions are highlighted critiqued for similarities differences in sample structure-morphology properties, especially antimicrobial properties safety–related uses. Also discussed representative recent examples use inactivate foodborne pathogens, disrupt biofilms prevent formation, extend shelf life products, which involve antibacterial mechanisms. Some perspectives further development dots–based/derived platform related excellent application opportunities safety provided.

Язык: Английский

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Near‐infrared Emission Carbon Dots Derived from Bromo‐Substituted Perylene Derivatives with Simultaneously High Type I/II ROS Generation for Effective Bacterial Elimination and Tumor Ablation

Small, Год журнала: 2025, Номер unknown

Опубликована: Фев. 17, 2025

Abstract Bacterial infections and tumor tissues are characterized by complex microenvironments with uneven oxygen availability. Effective photodynamic therapy for these conditions requires photosensitizers that can perform optimally within such environments, specifically generating both type I II reactive species (ROS) simultaneously. Carbon dots (CDs), a of fluorescent nanomaterial smaller than 10 nm, commonly used to treat bacterial tumors. However, their current limitations, as short maximum absorption emission wavelengths, significantly restrict therapeutic efficacy in deep tissues. In response challenges, new carbon near‐infrared (NIR) properties is reported, featuring peak beyond 700 nm (NIR‐I region). These CDs offer strong tissue penetration reduced advantages. Additionally, bromine atom doping enhances the generation ROS through efficient processes. vitro studies demonstrated high antibacterial antitumor applications. Ultimately, findings translate into significant effectiveness treating skin tumors vivo. This study employs bromine‐doped nanomaterials, which demonstrate fluorescence NIR region, achieve treatment ablation microenvironments.

Язык: Английский

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Recent advances in photothermal nanomaterials for ophthalmic applications

Beilstein Journal of Nanotechnology, Год журнала: 2025, Номер 16, С. 195 - 215

Опубликована: Фев. 17, 2025

The human eye, with its remarkable resolution of up to 576 million pixels, grants us the ability perceive world astonishing accuracy. Despite this, over 2 billion people globally suffer from visual impairments or blindness, primarily because limitations current ophthalmic treatment technologies. This underscores an urgent need for more advanced therapeutic approaches effectively halt even reverse progression eye diseases. rapid advancement nanotechnology offers promising pathways development novel therapies. Notably, photothermal nanomaterials, particularly well-suited transparent tissues have emerged as a potential game changer. These materials enable precise and controllable therapy by manipulating distribution thermal field. Moreover, they extend beyond conventional boundaries therapy, achieving unparalleled effects through their diverse composite structures demonstrating enormous in promoting retinal drug delivery photoacoustic imaging. paper provides comprehensive summary structure-activity relationship between properties these nanomaterials innovative mechanisms. We review latest research on nanomaterial-based treatments various Additionally, we discuss challenges future perspectives this field, focus enhancing global health.

Язык: Английский

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Shining Light on Carbon Dots: New Opportunities in Photocatalysis

ChemCatChem, Год журнала: 2023, Номер 15(16)

Опубликована: Июнь 25, 2023

Abstract Photocatalysis is an emerging field that exploits light‐absorbing catalysts to yield transformations not even achievable in the dark. Considering drawbacks of metal‐based photocatalysts, Carbon Dots (CDs) recently emerged as suitable green alternatives for different photocatalytic reactions. These carbon nanoparticles are easy prepare, non‐toxic and potentially recyclable. Moreover, CDs usually display core‐shell structures which highly tunable via synthetic post‐synthetic strategies. This Concept Article focuses on recent advancements CD‐based photocatalysis, highlighting link between their superficial core composition resulting photo‐redox abilities, giving future perspectives application cutting‐edge areas.

Язык: Английский

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Xylan derived carbon dots composite with PCL/PLA for construction biomass nanofiber membrane used as fluorescence sensor for detection Cu2+ in real samples

International Journal of Biological Macromolecules, Год журнала: 2023, Номер 252, С. 126431 - 126431

Опубликована: Авг. 19, 2023

Язык: Английский

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A shining transmutation of lignin into multicolor carbon dots via the dynamic solvent-fractionation engineering

Chemical Engineering Journal, Год журнала: 2023, Номер 478, С. 147363 - 147363

Опубликована: Ноя. 18, 2023

Язык: Английский

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Catalyst regulation of o-phenylenediamine-based carbon dots to achieve single red emission

Applied Surface Science, Год журнала: 2024, Номер 652, С. 159367 - 159367

Опубликована: Янв. 11, 2024

Язык: Английский

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Unveiling the role of a ground state charge transfer complex in carbon nanoparticles for highly efficient metal-free solar hydrogen production

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(8), С. 4712 - 4726

Опубликована: Янв. 1, 2024

A ground state charge transfer complex of N, P-CNPs and TEOA promotes long-lived free carriers modifies the electronic energy levels for complete metal-free solar H 2 generation. Free molecules act as effective SEDs during photocatalysis.

Язык: Английский

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