The light of carbon dots: From mechanism to applications

Matter, Год журнала: 2022, Номер 5(1), С. 110 - 149

Опубликована: Янв. 1, 2022

Язык: Английский

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Carbon Dots in Bioimaging, Biosensing and Therapeutics: A Comprehensive Review

Small Science, Год журнала: 2022, Номер 2(6)

Опубликована: Май 8, 2022

Carbon dots (CDs), comprising crystalline graphitized carbon cores and polymer surface groups, are currently attracting a lot of interest in biological fields owing to their fluorescent properties, high photostability, biocompatibility low toxicity. In addition, the easy preparation functionalization CDs stimulate development CDs‐based composite materials with specific functions. Presently, applications growing at remarkable speed, justifying need for up‐to‐date review articles that capture recent progress this blossoming field. review, breakthroughs synthesis, modification, optical toxicology biocatalytic platforms described. Further, research related bioimaging, biosensing, drug delivery, antibacterial, anticancer (photothermal therapy, photodynamic therapy synergistic therapy) antiviral therapies involving discussed detail. Finally, perspective on prospects challenges biomedicine biotechnology is provided.

Язык: Английский

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Flexible Bicolorimetric Polyacrylamide/Chitosan Hydrogels for Smart Real‐Time Monitoring and Promotion of Wound Healing

Advanced Functional Materials, Год журнала: 2021, Номер 31(34)

Опубликована: Июнь 17, 2021

Abstract Real‐time monitoring of wound healing remains a major challenge in clinical tissue regeneration, calling the need for development biomaterial‐guided on‐site technology. In this study, multifunctional double colorimetry‐integrated polyacrylamide‐quaternary ammonium chitosan‐carbon quantum dots (CQDs)‐phenol red hydrogels are presented, aiming to simultaneously detect pH level, reduce bacterial infection, and promote healing. The hybridization CQDs indicator (phenol red) with enables their high responsiveness, reversibility, accurate indication variability reflect dynamic status context both ultraviolet visible light. Furthermore, these visual images can be collected by smartphones converted into signals, allowing real‐time evaluation conditions remote approach. Notably, exhibit excellent hemostatic adhesive properties, maintain sufficient moisture, via antibacterial activity (against Staphylococcus Aureus , Escherichia Coli ) skin repair function. Overall, resulting have potential as novel smart flexible dressing platform theranostic regeneration.

Язык: Английский

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Fluorescent-based nanosensors for selective detection of a wide range of biological macromolecules: A comprehensive review

International Journal of Biological Macromolecules, Год журнала: 2022, Номер 206, С. 115 - 147

Опубликована: Фев. 26, 2022

Thanks to their unique attributes, such as good sensitivity, selectivity, high surface-to-volume ratio, and versatile optical electronic properties, fluorescent-based bioprobes have been used create highly sensitive nanobiosensors detect various biological chemical agents. These sensors are superior other analytical instrumentation techniques like gas chromatography, high-performance liquid capillary electrophoresis for being biodegradable, eco-friendly, more economical, operational, cost-effective. Moreover, several reports also highlighted application in the early detection of biomarkers associated with drug-induced organ damage liver, kidney, or lungs. In present work, we comprehensively overviewed electrochemical that employ nanomaterials (nanoparticles/colloids quantum dots, carbon nanoscaled metal-organic frameworks, etc.) a variety macromolecules based on fluorescent emission spectra. addition, most important mechanisms methods sense amino acids, protein, peptides, enzymes, carbohydrates, neurotransmitters, nucleic vitamins, ions, metals, electrolytes, blood gases, drugs (i.e., anti-inflammatory agents antibiotics), toxins, alkaloids, antioxidants, cancer biomarkers, urinary metabolites urea, uric acid, creatinine), pathogenic microorganisms were outlined compared terms selectivity sensitivity. Altogether, small dimensions capability these nanosensors sensitive, label-free, real-time sensing chemical, biological, pharmaceutical could be array-based screening in-vitro in-vivo diagnostics. Although nanoprobes widely applied determining macromolecules, unfortunately, they many challenges limitations. Efforts must made minimize limitations utilizing an emphasis commercial developments. We believe current review can foster wider incorporation nanomedicine will particular interest researchers working fluorescence technology, material chemistry, coordination polymers, related research areas.

Язык: Английский

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The Emerging Development of Multicolor Carbon Dots

Small, Год журнала: 2022, Номер 18(51)

Опубликована: Ноя. 3, 2022

Abstract As a relatively new type of fluorescent carbon‐based nanomaterials, multicolor carbon dots (MCDs) have attracted much attention because their excellent biocompatibility, tunable photoluminescence (PL), high quantum yield, and unique electronic physicochemical properties. The emission characteristics (CDs) obviously depend on the source precursor, reaction conditions, environment, which directly or indirectly determines CDs. Therefore, this review is first systematic classification summary multiple regulation methods synthetic MCDs reviews recent research progress in synthesis from variety precursor materials such as aromatic molecules, small organic natural biomass, focusing how different produce corresponding MCDs. This also introduces innovative applications fields biological imaging, light‐emitting diodes (LEDs), sensing, anti‐counterfeiting due to PL It hoped that by selecting appropriate adjustment methods, can inspire guide future design tailored MCDs, provide help for development multifunctional

Язык: Английский

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Optical Properties of Carbon Dots in the Deep‐Red to Near‐Infrared Region Are Attractive for Biomedical Applications

Small, Год журнала: 2021, Номер 17(43)

Опубликована: Авг. 8, 2021

Carbon dots (CDs) represent a recently emerged class of luminescent materials with great potential for biomedical theranostics, and there are lot efforts to shift their absorption emission toward deep-red (DR) near-infrared (NIR) region falling in the biological transparency window. This review offers comprehensive insights into synthesis strategies aimed achieve this goal, current approaches modulating optical properties CDs over DR NIR region. The underlying mechanisms absorption, photoluminescence, chemiluminescence, as well related photophysical processes photothermal conversion formation reactive oxygen species considered. already available applications CDs, such photoacoustic imaging therapy, photodynamic use bioimaging agents drug carriers then shortly summarized.

Язык: Английский

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Ethanol-derived white emissive carbon dots: the formation process investigation and multi-color/white LEDs preparation

Nano Research, Год журнала: 2021, Номер 15(2), С. 942 - 949

Опубликована: Июнь 16, 2021

Язык: Английский

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Carbon dots as emerging luminophores in security inks for anti-counterfeit applications - An up-to-date review

Applied Materials Today, Год журнала: 2021, Номер 23, С. 101050 - 101050

Опубликована: Май 7, 2021

Язык: Английский

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Recent advances in nanotechnology for simultaneous detection of multiple pathogenic bacteria

Nano Today, Год журнала: 2021, Номер 38, С. 101121 - 101121

Опубликована: Март 11, 2021

Язык: Английский

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Multimodal-Responsive Circularly Polarized Luminescence Security Materials

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(7), С. 4246 - 4253

Опубликована: Фев. 1, 2023

Nations, industries, and aspects of everyday life have undergone forgery counterfeiting ever since the emergence commercialization. Securing documents products with anticounterfeit additives shows promise for authentication, allowing one to combat ever-increasing global counterfeiting. One most-used effective encryption strategy is combine optical-security markers on required protection objects; however, state-of-the-art labels still suffer from imitation due their poor complexity easy forecasting, as a result deterministic production. Developing advanced anticounterfeiting tags unusual optical characters further incorporating complex security features are desired achieve multimodal, unbreakable authentication capacity; unfortunately, this has not yet been achieved. Here, we prepare series stable circularly polarized luminescence (CPL) materials, composed toxicity-free, high-quality-emitting inorganic quantum dots (QDs) liquid crystals, using designed helical-coassembly strategy. This CPL system achieves figure merit (FM, assessing performance both dissymmetry yield) value 0.39, fulfilling practical demands applications. Based these structures, produce type multimodal-responsive materials (MRSMs) that exhibits six different stimuli-responsive modes, including light activation, polarization, temperature, voltage, pressure, view angle. Thus, show proof-of-principle blockchain-like integrated system, multimodal-responsive, interactive/changeable information encryption–decryption. We encapsulate obtained into fiber expand our work flexible fabrics, is, building an intelligent textile color-adaptable function along environmental change.

Язык: Английский

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