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
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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
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Photoluminescent carbon nanotags from harmful cyanobacteria for drug delivery and imaging in cancer cells
Hyun Uk Lee,So Young Park,Eun Sik Park,Byoungchul Son,Soon Chang Lee,Jae-Won Lee,Young-Chul Lee,Kyoung Suk Kang,Moon Il Kim,Hyun Gyu Park,Saehae Choi,Yun Suk Huh,Seung-Yeul Lee,Kyung-Bok Lee,You-Kwan Oh,Jouhahn Lee +15 more
TL;DR: The results indicate that these multifunctional T-tags can deliver doxorubicin to the targeted cancer cells and sense the delivery of doxorbicin by activating the fluorescence of G-tags.
Journal ArticleDOI
The synthetic strategies, photoluminescence mechanisms and promising applications of carbon dots: Current state and future perspective
TL;DR: In this paper, a review comprehensively summarizes the development of synthetic strategies, photoluminescence (PL) mechanisms and promising applications of CDs, and the prospects and challenges for research into CDs are discussed in depth.
Journal ArticleDOI
Graphitic Nitrogen and High-Crystalline Triggered Strong Photoluminescence and Room-Temperature Ferromagnetism in Carbonized Polymer Dots.
TL;DR: Findings identify graphitic nitrogen and high crystallinity as crucial to the enhancement of the CPDs' photoluminescence and room‐temperature ferromagnetism which suggests that they deserve more research attention to develop practical applications.
Journal ArticleDOI
Photoluminescent C-dots@RGO probe for sensitive and selective detection of acetylcholine.
TL;DR: This study opens an avenue for the detection of various analytes by use of C-dots@RGO in conjunction with different enzymes, substrates, and/or inhibitors.
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Graphene quantum dots: multifunctional nanoplatforms for anticancer therapy
TL;DR: Recent advances in the study of the application of GQDs as nanoplatforms for anticancer therapy are reviewed, taking into account the methods used for their synthesis and functionalization procedures, which can deeply affect their biocompatibility and their electronic and optical features.
References
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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.
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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.