Journal of Colloid and Interface Science, Год журнала: 2022, Номер 617, С. 730 - 744
Опубликована: Март 17, 2022
Язык: Английский
Matter, Год журнала: 2022, Номер 5(1), С. 110 - 149
Опубликована: Янв. 1, 2022
Язык: Английский
Процитировано
664
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
Процитировано
252
Light Science & Applications, Год журнала: 2022, Номер 11(1)
Опубликована: Июнь 6, 2022
Abstract Due to the complex core–shell structure and variety of surface functional groups, photoluminescence (PL) mechanism carbon dots (CDs) remain unclear. o-Phenylenediamine (oPD), as one most common precursors for preparing red emissive CDs, has been extensively studied. Interestingly, emission CDs based on oPD have similar PL characteristics. Herein, we prepared six different oPD-based found that they had almost same absorption spectra after purification. Structural spectral characterization indicated core structures but polymer shells. Furthermore, single-molecule spectroscopy confirmed multi-modal those originated from transitions vibrational energy levels center in core. In addition, phenomenon “spectral splitting” single-particle was observed at low temperature, which these were unique materials with properties both organic molecules quantum dots. Finally, theoretical calculations revealed their potential polymerization mode structure. Moreover, proposed red-emitting precursors; is, regulates emission, shell intensity. Our work resolves controversy CDs. These findings provide a general guide exploration structural analysis other types
Язык: Английский
Процитировано
166
Trends in Chemistry, Год журнала: 2022, Номер 5(1), С. 76 - 87
Опубликована: Ноя. 10, 2022
Язык: Английский
Процитировано
166
Aggregate, Год журнала: 2022, Номер 3(2)
Опубликована: Янв. 20, 2022
Abstract The aggregate luminescence behavior of organic luminescent materials has been studied extensively. As a new kind nanomaterials, carbonized polymer dots (CPDs) not only inherit the stability and biocompatibility carbon materials, but also possess tunability, water solubility, high photoluminescence quantum yield rendering them strong candidate for next generation light‐emitting materials. Previously, people mainly understood its from perspective some mechanisms are still unclear. In this review, we discuss mechanism by referring to with emphasis on their aggregation behavior. Firstly, three representative phenomena briefly introduced. Chromophores present in CPDs elaborated further potential interactions between them, role crosslinked networks. On basis, special state summarized, relevant discussed detail consolidate statements.
Язык: Английский
Процитировано
139
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
Процитировано
130
Particle & Particle Systems Characterization, Год журнала: 2021, Номер 38(11)
Опубликована: Сен. 13, 2021
Abstract Carbon quantum dots (CQDs) are a unique class of 0D nanomaterials, featured by graphitic core and shell layers saturated with hydrogen atoms functional groups. CQDs prepared through top‐down bottom‐up strategies from natural synthetic precursors. can be modified chemical (e.g., surface functionalization/passivation, doping, etc.) physical core–shell architecture, composite material blending, to control their properties. This review highlights the effect such modifications on photophysical properties CQDs, as photoluminescence (PL), absorbance, relaxivity. The dependence PL upon size, orientation at edges, edge functionalization, excitation wavelength, concentration, pH, aggregate formation, etc., summarized along supporting theoretical evidence available in literature. Also, this outlines recent advancements, future prospective optical sensing, bioimaging, fluorescent ink) catalytic applications photocatalysis electrocatalysis) enhanced structure composition.
Язык: Английский
Процитировано
119
Small, Год журнала: 2022, Номер 18(11)
Опубликована: Янв. 17, 2022
Abstract Conventional synthesis of carbon dots (CDs) mostly involves a hydrothermal or solvent‐thermal reaction which needs relatively high temperature and pressure. In this work, ionic liquid is used to assist in fast synthesizing CDs with an ultrahigh photoluminescent quantum yield (98.5%) by heating at low (≤100 °C) atmospheric addition, through approach, tunable multicolor emissive can be successfully achieved for preparing high‐performance white light‐emitting diodes. Theoretical computation proves that the activity significantly enhanced liquids. Density functional theory calculation reveals size graphite nitrogen ratios have effect on bandgap reduction, resulting redshift emission, good agreement experimental results. This simple promising approach using affords facilitation CDs‐based luminescent materials manufacturing devices.
Язык: Английский
Процитировано
110
Advanced Science, Год журнала: 2023, Номер 10(12)
Опубликована: Фев. 3, 2023
Seeking clean energy as an alternative to traditional fossil fuels is the inevitable choice realize sustainable development of society. Photocatalytic technique considered a promising conversion approach store abundant solar into other wieldy carriers like chemical energy. Carbon dots, class fascinating carbon nanomaterials, have already become hotspots in numerous photoelectric researching fields and particularly drawn keen interests metal-free photocatalysts owing strong UV-vis optical absorption, tunable energy-level configuration, superior charge transfer ability, excellent physicochemical stability, facile fabrication, low toxicity, high solubility. In this review, classification, microstructures, general synthetic methods, photoelectrical properties dots are systematically summarized. addition, recent advances based photoinduced reactions including photodegradation, photocatalytic hydrogen generation, CO
Язык: Английский
Процитировано
97
Carbon Energy, Год журнала: 2022, Номер 4(1), С. 88 - 114
Опубликована: Янв. 1, 2022
Abstract Fluorescent carbon dots (CDs) have recently become a research hotspot in multidisciplinary fields owing to their distinctive advantages, including outstanding photoluminescence properties, high biocompatibility, low toxicity, and abundant raw materials. Among the promising CDs, narrow‐bandwidth emissive CDs with color purity emerged as rising star recent years because of significant potential applications bioimaging, information sensing, photoelectric displays. In this review, state‐of‐the‐art advances are systematically summarized, factors influencing emission bandwidth, preparation methods, described detail. Besides, existing challenges future perspectives for achieving high‐performance also discussed. This overview paper is expected generate more interest promote rapid development area.
Язык: Английский
Процитировано
89