Results 31 to 40 of about 301,103 (302)
Spectroscopic Characteristics of Carbon Dots (C-Dots) Derived from Carbon Fibers and Conversion to Sulfur-Bridged C-Dots Nanosheets [PDF]
, 2015 We synthesized sub‐10 nm carbon nanoparticles (CNPs) consistent with photoluminescent carbon dots (C-dots) from carbon fiber starting material. The production of different C-dots fractions was monitored over seven days. During the course of the reaction,
Bright, Frank V. +6 more
core +1 more source
Carbon “quantum” dots for bioapplications
Experimental Biology and Medicine, 2021 Carbon “quantum” dots or carbon dots (CDots) exploit and enhance the intrinsic photoexcited state properties and processes of small carbon nanoparticles via effective nanoparticle surface passivation by chemical functionalization with organic species.
Dekai Yuan +4 more
openaire +2 more sources
Coal based carbon dots: Recent advances in synthesis, properties, and applications
Nano Select, 2021 Carbon dots are zero‐dimensional carbon nanomaterials with quantum confinement effects and edge effects, which have aroused great interests in many disciplines such as energy, chemistry, materials, and environmental applications.
Ziguo He +9 more
doaj +1 more source
Nanomaterials, 2022 In this work, carbon dots were created from activated and non-activated pyrolytic carbon black obtained from waste tires, which were then chemically oxidized with HNO3.
Reyna Berenice González-González +5 more
doaj +1 more source
Reversible Photoswitching of Carbon Dots [PDF]
Scientific Reports, 2015 AbstractWe present a method of reversible photoswitching in carbon nanodots with red emission. A mechanism of electron transfer is proposed. The cationic dark state, formed by the exposure of red light, is revived back to the bright state with the very short exposure of blue light.
Syamantak Khan +3 more
openaire +2 more sources
Editorial for the Special Issue Entitled “Carbon-Based Quantum Dots”
Nanomaterials, 2023 Carbon-based quantum dots, also known as carbon dots (CDs), are a unique class of carbon-based nanoparticles with sizes below 10 nm [...]
Su Chen
doaj +1 more source
Electronic transport properties of double-wall carbon nanotubes [PDF]
, 2011 We studied the discretized electronic spectra of double-wall carbon nanotube (DWCNT) quantum dots (QDs) in the Coulomb-blockade regime. At low temperatures, the stability diagrams show a clear and regular eight-electron periodicity, which is due to the ...
Datta, Subhadeep +6 more
core +4 more sources
Resculpting carbon dots via electrochemical etching
Scientific Reports, 2023 Abstract Substantial efforts are directed into exploring the structure-properties relationships of photoluminescent Carbon dots (C-dots). This study unravels a resculpting mechanism in C-dots that is triggered by electrochemical etching and proceeds via extensive surface oxidation and carbon–carbon breakage. The process results in the
Qingsong Yang +7 more
openaire +3 more sources
Carbon Dot‐Based Biosensors [PDF]
Advanced NanoBiomed Research, 2021 0D fluorescent carbon dots (CDs), consisting of sp2/sp3 carbon skeletons with functional groups, have the advantages of good chemical stability, high biocompatibility, excellent dispersibility in water, and low photobleaching, as well as low toxicity and low cost. These interesting features allow CDs to be applicable in the field of biological imaging,
Wei Jiang +4 more
openaire +2 more sources
Single wall carbon nanotube double quantum dot
, 2006 We report on two top-gate defined, coupled quantum dots in a semiconducting single wall carbon nanotube, constituting a tunable double quantum dot system.
Grove-Rasmussen, K. +3 more
core +1 more source