Journal ArticleDOI
Red, Green, and Blue Luminescence by Carbon Dots: Full‐Color Emission Tuning and Multicolor Cellular Imaging
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TLDR
The facile preparation and unique optical features make these CDs potentially useful in numerous applications such as light-emitting diodes, full-color displays, and multiplexed (UC)PL bioimaging.Abstract:
A facile approach for preparation of photoluminescent (PL) carbon dots (CDs) is reported. The three resulting CDs emit bright and stable red, green and blue (RGB) colors of luminescence, under a single ultraviolet-light excitation. Alterations of PL emission of these CDs are tentatively proposed to result from the difference in their particle size and nitrogen content. Interestingly, up-conversion (UC)PL of these CDs is also observed. Moreover, flexible full-color emissive PVA films can be achieved through mixing two or three CDs in the appropriate ratios. These CDs also show low cytotoxicity and excellent cellular imaging capability. The facile preparation and unique optical features make these CDs potentially useful in numerous applications such as light-emitting diodes, full-color displays, and multiplexed (UC)PL bioimaging.read more
Citations
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Journal ArticleDOI
Full-Color Light-Emitting Carbon Dots with a Surface-State-Controlled Luminescence Mechanism.
TL;DR: Carbon dots with tunable photoluminescence (PL) and a quantum yield of up to 35% in water were hydrothermally synthesized in one pot and separated via silica column chromatography, and these separated CDs emitted bright and stable luminescence in gradient colors under a single-wavelength UV light.
Journal ArticleDOI
Synthesis of Carbon Dots with Multiple Color Emission by Controlled Graphitization and Surface Functionalization.
TL;DR: It is demonstrated that the CDots can be uniformly dispersed into epoxy resins and be fabricated as transparent CDots/epoxy composites for multiple-color- and white-light-emitting devices.
Journal ArticleDOI
Recent progress in carbon quantum dots: synthesis, properties and applications in photocatalysis
TL;DR: In this paper, the authors discuss the challenges and future direction of CQD-based materials in this booming research field, with a perspective toward the ultimate achievement of highly efficient and long-term stable carbon quantum dot-based photocatalysts.
Journal ArticleDOI
Evolution and Synthesis of Carbon Dots: From Carbon Dots to Carbonized Polymer Dots
TL;DR: CPDs are revealed as an emerging class of CDs with distinctive polymer/carbon hybrid structures and properties, and critical insights into facilitating their potential in various application fields are proposed.
Journal ArticleDOI
Near-Infrared Photoluminescent Polymer-Carbon Nanodots with Two-Photon Fluorescence
TL;DR: Near-infrared-emissive polymer-carbon nanodots possess two-photon fluorescence; in vivo bioimaging and red-light-emitting diodes based on these PCNDs are demonstrated.
References
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Journal ArticleDOI
Semiconductor Clusters, Nanocrystals, and Quantum Dots
TL;DR: In this article, the authors focus on the properties of quantum dots and their ability to join the dots into complex assemblies creates many opportunities for scientific discovery, such as the ability of joining the dots to complex assemblies.
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
Taking advantage of luminescent lanthanide ions
TL;DR: This critical review has been tailored for a broad audience of chemists, biochemists and materials scientists; the basics of lanthanide photophysics are highlighted together with the synthetic strategies used to insert these ions into mono- and polymetallic molecular edifices.
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Recent advances in the chemistry of lanthanide-doped upconversion nanocrystals
Feng Wang,Xiaogang Liu +1 more
TL;DR: This tutorial review focuses on the recent development of various synthetic approaches and possibilities for chemical tuning of upconversion properties, as well as giving an overview of biological applications of these luminescent nanocrystals.
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.