Journal ArticleDOI
Quantum-sized carbon dots for bright and colorful photoluminescence.
Ya-Ping Sun,Bing Zhou,Yi Lin,Wei Wang,K. A. Shiral Fernando,Pankaj Pathak,Mohammed J. Meziani,Barbara A. Harruff,Xin Wang,Haifang Wang,Pengju G. Luo,Hua Yang,Muhammet E. Köse,Bailin Chen,L. Monica Veca,Su-Yuan Xie +15 more
Reads0
Chats0
TLDR
It is reported that nanoscale carbon particles (carbon dots) upon simple surface passivation are strongly photoluminescent in both solution and the solid state.Abstract:
We report that nanoscale carbon particles (carbon dots) upon simple surface passivation are strongly photoluminescent in both solution and the solid state. The luminescence emission of the carbon dots is stable against photobleaching, and there is no blinking effect. These strongly emissive carbon dots may find applications similar to or beyond those of their widely pursued silicon counterparts.read more
Citations
More filters
Journal ArticleDOI
Biogreen Synthesis of Carbon Dots for Biotechnology and Nanomedicine Applications
TL;DR: This review of carbon dot-based sensors for the selective and sensitive detection of a wide range of analytes, including heavy metals, cations, anions, biomolecules, biomarkers, nitroaromatic explosives, pollutants, vitamins, and drugs is provided.
Journal ArticleDOI
Carbon Dots-in-Matrix Boosting Intriguing Luminescence Properties and Applications.
TL;DR: The state-of-the-art strategies for introducing CDs in various host matrices, such as nanoporous materials, polyvinyl alcohol, polyurethane, potash alum, layered double hydroxides, amorphous silica, etc, and the resultant luminescent properties of the composites and their emission mechanisms are discussed.
Journal ArticleDOI
One-step synthesis of fluorescent hydroxyls-coated carbon dots with hydrothermal reaction and its application to optical sensing of metal ions
TL;DR: In this paper, the authors synthesize carbon dots with candle soot through hydrothermal reaction in sodium hydroxide aqueous solution, and the as-prepared CDs were covered with a lot of hydroxyls, possessed properties of good water-solubility, anti-photobleaching, salt tolerance, and low cytotoxicity.
Journal ArticleDOI
Lignin from Micro- to Nanosize: Applications.
TL;DR: This review focuses on the application of micro- and nanostructured lignin in final products or processes that all show potential for high added value.
Journal ArticleDOI
Magnetic iron oxide–fluorescent carbon dots integrated nanoparticles for dual-modal imaging, near-infrared light-responsive drug carrier and photothermal therapy
Hui Wang,Jing Shen,Yingyu Li,Zengyan Wei,Guixin Cao,Zheng Gai,Kunlun Hong,Probal Banerjee,Shuiqin Zhou +8 more
TL;DR: The hybrid NPs can absorb and convert near-infrared (NIR) light to heat due to the existence of CDs, and thus, can realise NIR-controlled drug release and combined photothermo/chemotherapy for high therapeutic efficacy.
References
More filters
Journal ArticleDOI
Quantum Dots for Live Cells, in Vivo Imaging, and Diagnostics
Xavier Michalet,Fabien Pinaud,Laurent A. Bentolila,James M. Tsay,Sören Doose,J. Jack Li,Gobalakrishnan Sundaresan,Anna M. Wu,Sanjiv S. Gambhir,Sanjiv S. Gambhir,Shimon Weiss +10 more
TL;DR: The new generations of qdots have far-reaching potential for the study of intracellular processes at the single-molecule level, high-resolution cellular imaging, long-term in vivo observation of cell trafficking, tumor targeting, and diagnostics.
Journal ArticleDOI
Probing the Cytotoxicity Of Semiconductor Quantum Dots.
TL;DR: This work found that CdSe-core QDs were indeed acutely toxic under certain conditions and modulated by processing parameters during synthesis, exposure to ultraviolet light, and surface coatings, and suggests that cytotoxicity correlates with the liberation of free Cd2+ ions due to deterioration of the Cd Se lattice.
Journal ArticleDOI
Fluorescence intermittency in single cadmium selenide nanocrystals
M. Nirmal,M. Nirmal,B. O. Dabbousi,Moungi G. Bawendi,John J. Macklin,John J. Macklin,J. K. Trautman,J. K. Trautman,Timothy D. Harris,Timothy D. Harris,Louis E. Brus,Louis E. Brus +11 more
TL;DR: In this article, it was shown that light emission from single fluorescing nanocrystals of cadmium selenide under continuous excitation turns on and off intermittently with a characteristic timescale of about 0.5 seconds.
Journal ArticleDOI
Cytotoxicity of colloidal CdSe and CdSe/ZnS nanoparticles.
Christian Kirchner,Tim Liedl,Stefan Kudera,Teresa Pellegrino,Almudena Muñoz Javier,Hermann E. Gaub,Sonja Stölzle,Niels Fertig,Wolfgang J. Parak +8 more
TL;DR: The data suggest that in addition to the release of toxic Cd(2+) ions from the particles also their surface chemistry, in particular their stability toward aggregation, plays an important role for cytotoxic effects.
Journal ArticleDOI
Control of Thickness and Orientation of Solution-Grown Silicon Nanowires
TL;DR: Bulk quantities of defect-free silicon nanowires with nearly uniform diameters were grown to a length of several micrometers with a supercritical fluid solution-phase approach, and visible photoluminescence due to quantum confinement effects was observed, as were discrete optical transitions in the ultraviolet-visible absorbance spectra.