Journal ArticleDOI
Solvent-dependent carbon dots and their applications in the detection of water in organic solvents
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TLDR
In this article, solvent-dependent emitting carbon dots (CDs) were synthesized by simple one-step hydrothermal treatment of o-phenylenediamine (oPD).Abstract:
In this study, solvent-dependent emitting carbon dots (CDs) were synthesized by simple one-step hydrothermal treatment of o-phenylenediamine (oPD). The as-prepared carbon dots (o-CDs) exhibited multi-color emission and strict excitation-independent luminescence characteristics in different solvents. Moreover, multi-color emissive o-CDs/polymer films were achieved through integrating the o-CDs with different polymer matrices. Interestingly, our experimental results demonstrated that distinctive o-CDs can also be used as fluorescent probes directly for visual and quantitative detection of water in different organic solvents. These investigations broaden the application of CDs and provide an easy method to quantitatively detect the presence of water in organic solvents.read more
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Red carbon dots: Optical property regulations and applications
Zhijun Zhu,Yanling Zhai,Zhenhua Li,Peiyuan Zhu,Sui Mao,Chengzhou Zhu,Dan Du,Laurence A. Belfiore,Laurence A. Belfiore,Jianguo Tang,Yuehe Lin +10 more
TL;DR: In this article, the most recent efforts in the development of CDs with intensive emission at a long wavelength, with a focus on the regulation methods for the optical properties of CDs, including particle size, surface state, and heteroatom doping.
Bright Multicolor Bandgap Fluorescent Carbon Quantum Dots for Electroluminescent Light-Emitting Diodes
TL;DR: For the first time, monochrome electroluminescent light-emitting diodes (LEDs) with MCBF-CQDs directly as an active emission layer are fabricated and the maximum luminance of blue LEDs reaches 136 cd m-2, which is the best performance for CQD-based monochrominescent LEDs.
Journal ArticleDOI
Orange-Emissive Carbon Quantum Dots: Toward Application in Wound pH Monitoring Based on Colorimetric and Fluorescent Changing.
TL;DR: Novel orange-emissive carbon quantum dots (O-CDs) are synthesized via microwave-assisted heating of 1,2,4-triaminobenzene and urea aqueous solution and exhibit distinctive colorimetric response to pH changing, and also display pH-sensitive fluorescence.
Journal ArticleDOI
Recent advances in crystalline carbon dots for superior application potential
TL;DR: In this paper, the authors highlight the green synthesis of Cdots along with recent speculations, demonstrating the origin of their exciting photoluminescence properties, and discuss the important challenges such as production of crystalline carbon Dots and future directions of Cdot based research.
Journal ArticleDOI
N-doped carbon dots with tunable emission for multifaceted application: solvatochromism, moisture sensing, pH sensing, and solid state multicolor lighting
Moniruzzaman,Jongsung Kim +1 more
TL;DR: In this article, N-doped green-emitting carbon dots (N-GCDs) were synthesized from β-resorcylic acid and ethylenediamine using a hydrothermal process followed by a reflux method.
References
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Journal ArticleDOI
Solvatochromic Dyes as Solvent Polarity Indicators
TL;DR: In this paper, a review compiles positively and negatively solvatochromic compounds which have been used to establish empirical scales of solvent polarity by means of UV/vis/near-IR spectroscopic measurements in solution.
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Carbon quantum dots and their applications
TL;DR: The progress in the research and development of CQDs is reviewed with an emphasis on their synthesis, functionalization and technical applications along with some discussion on challenges and perspectives in this exciting and promising field.
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Highly Photoluminescent Carbon Dots for Multicolor Patterning, Sensors, and Bioimaging
Shoujun Zhu,Qingnan Meng,Lei Wang,Junhu Zhang,Yubin Song,Han Jin,Kai Zhang,Hongchen Sun,Hai-Yu Wang,Bai Yang +9 more
TL;DR: A facile and highoutput strategy for the fabrication of CDs, which is suitable for industrial-scale production and is almost equal to fluorescent dyes, is discussed.
Journal ArticleDOI
Carbon nanodots: synthesis, properties and applications
TL;DR: In this article, a review of the photo and electron properties of carbon nanodots is presented to provide further insight into their controversial emission origin and to stimulate further research into their potential applications, especially in photocatalysis, energy conversion, optoelectronics, and sensing.
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Carbon-Based Dots Co-doped with Nitrogen and Sulfur for High Quantum Yield and Excitation-Independent Emission†
Yongqiang Dong,Hongchang Pang,Hongbin Yang,Chunxian Guo,Jingwei Shao,Yuwu Chi,Chang Ming Li,Chang Ming Li,Ting Yu +8 more
TL;DR: A new type and high density of surface state of GQDs arises, leading to high yields (more than 70 %) and excitation-independent emission and FLQY = fluorescence quantum yield.