Zero-Dimensional Carbon Nanomaterials for Fluorescent Sensing and Imaging

Chemical Reviews, Год журнала: 2023, Номер 123(18), С. 11047 - 11136

Опубликована: Сен. 7, 2023

Advances in nanotechnology and nanomaterials have attracted considerable interest play key roles scientific innovations diverse fields. In particular, increased attention has been focused on carbon-based exhibiting extended structures unique properties. Among these materials, zero-dimensional structures, including fullerenes, carbon nano-onions, nanodiamonds, dots, possess excellent bioaffinities superior fluorescence properties that make suitable for application to environmental biological sensing, imaging, therapeutics. This review provides a systematic overview of the classification structural properties, design principles preparation methods, optical sensing applications nanomaterials. Recent interesting breakthroughs sensitive selective imaging heavy metal pollutants, hazardous substances, bioactive molecules as well information encryption, super-resolution photoacoustic phototherapy nanomedicine delivery are main focus this review. Finally, future challenges prospects materials highlighted envisaged. presents comprehensive basis directions designing, developing, applying fascinating fluorescent sensors fabricated based specific requirements numerous research

Язык: Английский

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Carbon Dots‐Inked Paper with Single/Two‐Photon Excited Dual‐Mode Thermochromic Afterglow for Advanced Dynamic Information Encryption

Advanced Materials, Год журнала: 2024, Номер 36(31)

Опубликована: Май 13, 2024

Achieving thermochromic afterglow (TCAG) in a single material for advanced information encryption remains significant challenge. Herein, TCAG carbon dots (CDs)-inked paper (CDs@Paper) is achieved by tuning the temperature-dependent dual-mode of room temperature phosphorescence (RTP) and thermally activated delayed fluorescence (TADF). The CDs are synthesized through thermal treatment levofloxacin melting boric acid with postpurification via dialysis. CDs@Paper exhibit both excitation-dependent color properties. exhibits dynamic changes from blue at high temperatures to yellow low adjusting proportion TADF phosphorescence. Notably, two-photon CDs-based materials time-dependent colors first time. Moreover, leveraging opposite emission responses temperature, demonstrate temperature-sensing capabilities across wide range. Furthermore, CDs@Paper-based 3D code containing successfully developed encryption.

Язык: Английский

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Direct Z‐Scheme Xylan‐Based Carbon Dots@TiO_2‐x Nanocomposites for Visible Light Driven Photocatalytic of Dye Degradation and Antibacterial

Advanced Functional Materials, Год журнала: 2024, Номер 34(32)

Опубликована: Май 13, 2024

Abstract TiO 2 photocatalysis has gained attention as a cost‐effective way of degrading contaminants. However, it relies on UV excitation and experiences rapid carrier recombination. To address these drawbacks, novel xylan‐based carbon dots@hydrogenated (CDs@TiO 2‐x ) composited by direct Z‐scheme heterojunction is fabricated visible light‐driven photocatalytic material, which broadens the range light absorption to suppresses recombination photogenerated carriers. The spindle‐shaped CDs@TiO C/N/O/S groups, positive charges, oxygen vacancies its surface, can degrade 89% methylene blue 87% methyl orange within 90 min, 99% rhodamine B 60 min in light. It also eradicates 99.9% E. coli h 97.1% S. aureus 2.5 h. These performances surpass CDs , exhibit advantages similar composite materials. degradation pathways dyes specific antibacterial processes induced ROS are thoroughly investigated through LC‐MS testing related enzyme activity assays. DFT calculations study role vacancies, mechanism, catalytic sites. This developed nanocomposite with applications both dye sterilization, offering insights for multifunctional materials based heterojunction.

Язык: Английский

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CuS/Co-Ferrocene-MOF Nanocomposites for Photothermally Enhanced Chemodynamic Antibacterial Therapy

ACS Applied Nano Materials, Год журнала: 2024, Номер 7(9), С. 10998 - 11007

Опубликована: Апрель 29, 2024

Infections caused by bacteria pose a serious threat to public health, and there is need for numerous innovative, antibiotic-free antimicrobial medicines. Herein, we describe the synthesis of CuS/Co-ferrocene-MOF (CuS/Co-Fc-MOF) nanocomposites, formed coupling CuS nanoparticles (NPs) two-dimensional (2D) Co-Fc-MOF nanosheets, that constitutes an platform capable near-infrared (NIR) photothermal promotion chemodynamic antibacterial. 2D CuS/Co-Fc-MOF nanocomposites consist nanosheets with dimensions approximately 100–200 nm thicknesses 13.1–15.6 nm, where NPs, size about 8 are excellently dispersed on surface nanosheets. The diverse valence states cobalt iron in enable them undergo Fenton-like reactions H2O2, thus generating highly oxidizing ·OH therapy (CDT). utilization local plasmonic resonance effect NPs enables enhancement CDT activity under laser irradiation. More importantly, can achieve rapid (15 min) NIR laser-assisted killing both S. aureus E. coli bacterial infection microenvironment compared Therefore, be employed as promising nanoagent promote photothermally augmented antibacterial therapy.

Язык: Английский

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Carbon Quantum Dot-Functionalized Dermis-Derived Transparent Electronic Skin for Multimodal Human Motion Signal Monitoring and Construction of Self-Powered Triboelectric Nanogenerator

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(35), С. 46771 - 46788

Опубликована: Авг. 21, 2024

Electronic skin (e-skin) is considered as a highly promising interface for human-computer interaction systems and wearable electronic devices. Through elaborate design assembly of various materials, it possesses multiple characteristics similar to human skin, including remarkable flexibility, stretchability, sensitivity temperature humidity, biocompatibility, efficient interfacial ion/electron transport capabilities. Here, we innovatively integrate multifunctional carbon quantum dots (CQDs), which exhibit conductivity, antibacterial properties, ultraviolet absorption, fluorescence emission, with poly(acrylic acid) glycerin (Gly) into three-dimensional network structure natural goatskin collagen fibers. top-down strategy enhanced by hydrogen bond reconstruction, successfully fabricated novel transparent e-skin (PAC-eSkin). This exhibited significant tensile properties (4.94 MPa strength 263.42% maximum breaking elongation), while also possessing Young's modulus (2.32 MPa). It noteworthy that the functionalized CQDs used was derived from discarded goat hair, addition Gly gave PAC-eSkin excellent antifreezing moisturizing properties. Due presence ultrasmall CQDs, creates channels within PAC-eSkin, could rapidly sense motion physiological signals (with gauge factor (GF) 1.88). Furthermore, had potential replace traditional electrode patches real-time monitoring electrocardiogram, electromyogram, electrooculogram signals, higher SNR (signal-to-noise ratio) 25.1 dB. Additionally, customizable size shape offer vast possibilities construction single-electrode triboelectric nanogenerator systems. We have reason believe development this based on CQDs-functionalized dermal matrices can pave new way innovations in human–computer interfaces their sensing application diverse scenarios.

Язык: Английский

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Long-lived dynamic room temperature phosphorescent carbon dots for advanced sensing and bioimaging applications

Coordination Chemistry Reviews, Год журнала: 2024, Номер 516, С. 215987 - 215987

Опубликована: Май 31, 2024

Язык: Английский

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Catalytic Nanodots‐Driven Pyroptosis Suppression in Nucleus Pulposus for Antioxidant Intervention of Intervertebral Disc Degeneration

Advanced Materials, Год журнала: 2024, Номер 36(19)

Опубликована: Фев. 1, 2024

Abstract Low back pain resulting from intervertebral disc degeneration (IVDD) is a prevalent global concern; however, its underlying mechanism remains elusive. Single‐cell sequencing analyses revealed the critical involvement of pyroptosis in IVDD. Considering reactive oxygen species (ROS) as primary instigator and lack an efficient intervention approach, this study developed carbonized Mn‐containing nanodots (MCDs) ROS‐scavenging catalytic biomaterials to suppress nucleus pulposus (NP) cells efficiently alleviate Catalytic MCDs have superior efficacy scavenging intracellular ROS rescuing homeostasis NP microenvironment compared with N‐acetylcysteine, classical antioxidant. The data validates that plays vital role mediating protective effects against oxidative stress. Systematic vivo assessments substantiate effectiveness puncture‐induced IVDD rat model, further demonstrating their ability pyroptosis. This highlights potential antioxidant nanomedicine inhibitor mechanistically unveils strategy for treatment

Язык: Английский

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Comprehensive Overview of Controlled Fabrication of Multifunctional Fluorescent Carbon Quantum Dots and Exploring Applications

Small, Год журнала: 2024, Номер 20(29)

Опубликована: Фев. 11, 2024

Abstract In recent years, carbon dots (CDs) have garnered increasing attention due to their simple preparation methods, versatile performances, and wide‐ranging applications. CDs can manifest various optical, physical, chemical properties including quantum yield (QY), emission wavelength (Em), solid‐state fluorescence (SSF), room‐temperature phosphorescence (RTP), material‐specific responsivity, pH sensitivity, anti‐oxidation oxidation, biocompatibility. These be effectively regulated through precise control of the CD process, rendering them suitable for diverse However, lack consideration given each feature during process poses a challenge in obtaining requisite features This paper is analyze existing research present novel concepts ideas creating with different distinct The synthesis methods are discussed first section, followed by comprehensive overview important modification strategy. Subsequently, application reviewed. Finally, outlines current challenges controlling applications, discusses potential solutions, offers suggestions future research.

Язык: Английский

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Nanotechnology of carbon dots with their hybrids for biomedical applications: A review

Chemical Engineering Journal, Год журнала: 2024, Номер 496, С. 153915 - 153915

Опубликована: Июль 14, 2024

Язык: Английский

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Programmed Transformation of Osteogenesis Microenvironment by a Multifunctional Hydrogel to Enhance Repair of Infectious Bone Defects

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Янв. 22, 2025

Abstract Repair of infectious bone defects remains a serious problem in clinical practice owing to the high risk infection and excessive reactive oxygen species (ROS) during early stage, residual bacteria delayed Osseo integrated interface later which jointly creates complex dynamic microenvironment leads non‐union. The melatonin carbon dots (MCDs) possess antibacterial osteogenesis abilities, greatly simplifying composition multifunctional material. Therefore, hydrogel containing MCDs (GH‐MCD) is developed meet multi‐stage repair needs injury this study. GH‐MCD can intelligently release responding acidic scavenge intracellular ROS exhibit good activity by inducing production inhibiting expression secA2 . Moreover, it has long‐lasting antimicrobial repair. RNA‐seq results reveal that hydrogels promote infected healing enhancing cellular resistance bacteria, balancing osteoclastogenesis, regulating immune microenvironment. In conclusion, through programmed transformation microenvironment, providing novel strategy for defects.

Язык: Английский

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