Zero-Dimensional Carbon Nanomaterials for Fluorescent Sensing and Imaging

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(18), P. 11047 - 11136

Published: Sept. 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

Language: Английский

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Carbon Dots for Electroluminescent Light‐Emitting Diodes: Recent Progress and Future Prospects

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(44)

Published: March 24, 2023

Abstract Carbon dots (CDs), as emerging carbon nanomaterials, have been regarded promising alternatives for electroluminescent light‐emitting diodes (LEDs) owing to their distinct characteristics, such low toxicity, tuneable photoluminescence, and good photostability. In the last few years, despite remarkable progress achieved in CD‐based LEDs, device performance is still inferior that of well‐developed organic, heavy‐metal‐based QDs, perovskite LEDs. To better exploit LED applications boost performance, this review, a comprehensive overview currently explored CDs presented, focusing on key optical which are closely related structural design from core surface modifications, macroscopic engineering, including embedding matrix or spatial arrangement CDs. The LEDs display lighting based fluorescence, phosphorescence, delayed fluorescence emission also highlighted. Finally, it concluded with discussion regarding challenges plausible prospects field. It hoped review inspires more extensive research new perspective promotes practical multiple directions current future research.

Language: Английский

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Multicolor Afterglow Carbon Dots: Luminescence Regulation, Preparation, and Application

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(25)

Published: Feb. 6, 2024

Abstract Afterglow materials have attracted much attention owing to their long luminescence lifetimes, large Stokes shifts, and emission without real‐time excitation. Compared with traditional organic afterglow materials, carbon dots (CDs), as a new material, superior properties such easy preparation, low toxicity, cost. The color of CDs can be regulated by external factors excitation wavelength, temperature, time, which is highly significant for expanding the diversified applications make them available biotechnology information applications. This review summarizes research progress multicolor in recent years, including regulation strategies, preparation methods, First, are classified into three strategies: room temperature phosphorescence (RTP), thermally activated delayed fluorescence converted RTP, based on Förster resonance energy transfer, strategies regulating analyzed. Second, methods achieving summarized both matrix‐free matrix‐confined aspects. Then, anticounterfeiting encryption, sensing bioimaging introduced detail. Finally, future challenges opportunities prospected provide ideas controlled design wide application.

Language: Английский

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Combination of Efficient Red Fluorescence and High Photothermal Conversion in the Second Near‐Infrared Window from Carbon Dots through Photoinduced Sodium‐Doping Approach

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(38)

Published: April 12, 2024

Abstract Carbon dots (CDs) are highly desired in biological applications. However, achieving a balance between photoluminescence (PL) efficiency and photothermal conversion (PTCE) is challenging. In this study, an unprecedent combination of efficient red fluorescence high PTCE the second near‐infrared (NIR‐II) window sodium‐doped CDs system reported. Upon 808 nm laser irradiation, photo‐induced oxidation–reduction reactions happened on surface sodium cation‐functionalized (Na‐CDs), leading to partial reduction surface‐functionalized (Na) ions. The photo‐reduced Na atoms coordinated with sp 2 C domains core, resulting Na‐doped (ir‐Na‐CDs) enhanced absorption band NIR‐II 43% under 1064 irradiation (1 W cm −2 ). Composing ir‐Na‐CDs bovine serum albumin (BSA) PLQY emission 31% water without diminishing region. Transient spectra revealed that no energy transfer occurred center band, revealing novel independent Janus photophysical processes. Moreover, ir‐Na‐CDs@BSA exhibited negligible low cytotoxicity demonstrated tumor accumulation capacity after intravenous injection, enabling effective therapy

Language: Английский

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

Small, Journal Year: 2024, Volume and Issue: 20(29)

Published: Feb. 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.

Language: Английский

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Nitrogen and Sulfur Co-Doped Carbon Dots with Excellent Fluorescent Thermal Stability for Anti-Counterfeiting and Information Encryption

Organic Electronics, Journal Year: 2025, Volume and Issue: 139, P. 107197 - 107197

Published: Jan. 18, 2025

Language: Английский

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Synthesis Processes, Photoluminescence Mechanism, and the Toxicity of Amorphous or Polymeric Carbon Dots

Accounts of Chemical Research, Journal Year: 2022, Volume and Issue: 55(23), P. 3312 - 3321

Published: Nov. 23, 2022

ConspectusFluorescence is the emission of light following photon absorption. This optical phenomenon has many applications in daily life, such as LED lamps, forensics, and bioimaging. Traditionally, small-molecule fluorophores were most common, but types molecules particles with compelling fluorescence properties have expanded. For example, green fluorescent protein (GFP) was isolated from jellyfish won Nobel prize 2008 due to its significant utility a biomarker. Using intrinsic GFP, previously invisible biological processes substances can now be observed studied. Other materials also been developed, greatly expanding potential applications. Semiconductor quantum dots (QDs), which bright narrow bandwidth, are popular choice for display technologies. However, QDs made heavy metal elements Cd Se, pose safety concerns environment human health. Thus, new organic being developed mitigate toxicological while maintaining QD advantages.One type material attracting great attention an environmentally friendly substitute semiconductor carbon (CDs). CDs strong fluorescence, good photostability, low toxicity using variety precursors, some synthesis scale-up. since they through different methods, structure differ preparation preparation. There three major CDs: graphene (GQDs), (CQDs), amorphous or polymeric (PCDs). Account focuses on PCDs their unique by comparing it other CDs. The processes, properties, mechanisms, discussed below emphasis distinct attributes PCDs.PCDs synthesized small polymers. They cross-linked polymer fluorescence. possibly cross-link-enhanced clusteroluminescence that arises through-space interactions heteroatomic-rich functional groups. mechanisms CDs, including contributions core surface states, may contribute. profiles influenced chemical composition, functionalization, illumination. generally thought toxicity, this further improved removing toxic byproducts, functionalizing surface, reducing exposure minimize generation reactive oxygen species.

Language: Английский

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Kilogram-scale synthesis of carbon dots with high-efficiency full-color solid-state fluorescence using an aggregation-induced emission strategy

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 476, P. 146405 - 146405

Published: Oct. 11, 2023

Language: Английский

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Nitrogen, sulfur, and phosphorus Co-doped carbon dots-based ratiometric chemosensor for highly selective sequential detection of Al3+ and Fe3+ ions in logic gate, cell imaging, and real sample analysis

Chemosphere, Journal Year: 2022, Volume and Issue: 313, P. 137444 - 137444

Published: Nov. 30, 2022

Language: Английский

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Calcination temperature tuning of RTP and TADF with wide range of emission color from carbon dots confined in Al2O3

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 474, P. 145597 - 145597

Published: Aug. 23, 2023

Language: Английский

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