Journal ArticleDOI
Tunable multicolor carbon dots prepared from well-defined polythiophene derivatives and their emission mechanism.
TLDR
A tunable photoluminescence mechanism is proposed to result from variations in the surface state and N content, and the C-dots are candidates for bio-imaging.Abstract:
Various functional precursors based on polythiophene derivatives are designed to prepare carbon dots (C-dots) with tunable emissions ranging from blue to near-infrared (NIR) at a single excitation wavelength (400 nm). The as-prepared C-dots demonstrate homogeneous size, superior optical properties, excellent water solubility, and low cytotoxicity. Thus, the C-dots are candidates for bio-imaging. A tunable photoluminescence mechanism is proposed to result from variations in the surface state and N content.read more
Citations
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Journal ArticleDOI
Shining carbon dots: Synthesis and biomedical and optoelectronic applications
TL;DR: In this paper, the authors reviewed the latest researches on the synthesis, structure, optical and electronic properties of CDs as well as their advanced applications in biomedicine and optoelectronics.
Journal ArticleDOI
Graphitic Nitrogen Triggers Red Fluorescence in Carbon Dots.
Kateřina Holá,Mária Sudolská,Sergii Kalytchuk,Dana Nachtigallová,Dana Nachtigallová,Andrey L. Rogach,Michal Otyepka,Radek Zbořil +7 more
TL;DR: The presented findings identify graphitic nitrogen as another crucial factor that can red-shift the CD photoluminescence and generate midgap states within the HOMO-LUMO gap of the undoped systems.
Journal ArticleDOI
Solvent-Controlled Synthesis of Highly Luminescent Carbon Dots with a Wide Color Gamut and Narrowed Emission Peak Widths.
TL;DR: A series of CDs with tunable emission from 443 to 745 nm, quantum yield within 13-54%, and narrowed full width at half maximum (FWHM) from 108 to 55 nm, are obtained by only adjusting the reaction solvents in a one-pot solvothermal route.
Journal ArticleDOI
The fluorescence mechanism of carbon dots, and methods for tuning their emission color: a review
TL;DR: In this review, the studies performed in the past 5 years on the relationship between the fluorescence mechanism and modes for modulating the emission color of CDs are summarized and the applications of such CDs in sensors and assays are outlined.
Journal ArticleDOI
Carbon dots: materials, synthesis, properties and approaches to long-wavelength and multicolor emission
TL;DR: The long-wavelength and multicolor emission properties of CDs and ways to achieve these goals including surface state and size controlled by synthesis strategies, proper precursors, chemical doping and modification, solvatochromic effects and energy transfer are reviewed in detail.
References
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Journal ArticleDOI
Luminescent Carbon Nanodots: Emergent Nanolights
Sheila N. Baker,Gary A. Baker +1 more
TL;DR: This Review summarize recent advances in the synthesis and characterization of C-dots and speculate on their future and discuss potential developments for their use in energy conversion/storage, bioimaging, drug delivery, sensors, diagnostics, and composites.
Journal ArticleDOI
Metal-free efficient photocatalyst for stable visible water splitting via a two-electron pathway
Juan Liu,Yang Liu,Naiyun Liu,Yuzhi Han,Xing Zhang,Hui Huang,Yeshayahu Lifshitz,Yeshayahu Lifshitz,Shuit-Tong Lee,Jun Zhong,Zhenhui Kang +10 more
TL;DR: The design and fabrication of a metal-free carbon nanodot–carbon nitride (C3N4) nanocomposite is reported and its impressive performance for photocatalytic solar water splitting is demonstrated.
Journal ArticleDOI
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.
Journal ArticleDOI
Electrophoretic analysis and purification of fluorescent single-walled carbon nanotube fragments.
Xiaoyou Xu,Robert Ray,Yunlong Gu,Harry J. Ploehn,Latha A. Gearheart,Kyle Raker,Walter A. Scrivens +6 more
TL;DR: Arc-synthesized single-walled carbon nanotubes have been purified through preparative electrophoresis in agarose gel and glass bead matrixes and promise to be interesting nanomaterials in their own right.
Journal ArticleDOI
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.