Results 261 to 270 of about 111,252 (299)

Carbon Quantum Dots

2018
Carbon quantum dots (CQDs) are the latest generation of carbon nanomaterials in applications where fullerenes, carbon nanotubes, and graphene are abundantly used. With several attractive properties such as tunable optical property, edge-functionalization, and defect-rich chemical structure, CQDs have the potential to revolutionize optoelectronics ...
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Carbon-Nanotube-Based Quantum Dot

Physical Review Letters, 1998
A pure carbon quantum dot can be designed by introducing pentagon-heptagon defects in a carbon nanotube. This system has completely confined electronic states induced by the presence of topological defects. By varying the distance between the pentagon-heptagon pairs, the energy difference, spatial confinement, and number of discrete levels can be ...
L. Chico, M. P. López Sancho, M. C. Muñoz   +2 more
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Carbon Quantum Dots in Nanobiotechnology

2019
There has been an outburst of attraction in the use of nanoparticles and nanomaterials for bioimaging, biosensing and other chemical and biological applications. At the leading edge of the new trend of the emerging nanoparticles in the carbonic nanomaterials family, fluorescent carbon quantum dots have drawn considerable attention due to their unique ...
Hamidreza Behboudi, Golnaz Mehdipour, Nooshin Safari, Mehrab Pourmadadi, Arezoo Saei, Meisam Omidi, Lobat Tayebi, Moones Rahmandoust   +7 more
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Fluorescent carbon nanomaterials: “quantum dots” or nanoclusters?

Phys. Chem. Chem. Phys., 2014
Despite many efforts, the mechanisms of light absorption and emission of small fluorescent carbon nanoparticles (C-dots) are still unresolved and are a subject of active discussion.
Mariia O, Dekaliuk, Oleg, Viagin, Yuriy V, Malyukin, Alexander P, Demchenko   +3 more
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Graphene Quantum Dots Derived from Carbon Fibers

Nano Letters, 2012
Graphene quantum dots (GQDs), which are edge-bound nanometer-size graphene pieces, have fascinating optical and electronic properties. These have been synthesized either by nanolithography or from starting materials such as graphene oxide (GO) by the chemical breakdown of their extended planar structure, both of which are multistep tedious processes ...
Juan, Peng, Wei, Gao, Bipin Kumar, Gupta, Zheng, Liu, Rebeca, Romero-Aburto, Liehui, Ge, Li, Song, Lawrence B, Alemany, Xiaobo, Zhan, Guanhui, Gao, Sajna Antony, Vithayathil, Benny Abraham, Kaipparettu, Angel A, Marti, Takuya, Hayashi, Jun-Jie, Zhu, Pulickel M, Ajayan   +15 more
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Observing Carbon Dots in Putative Boron Nitride Quantum Dots

Nano Letters
Boron nitride quantum dots (BNQDs) have garnered a significant amount of attention in recent years due to their attractive optical properties, high stability, low toxicity, and good biocompatibility. However, our study reveals a critical mischaracterization in this field, demonstrating that some so-called BNQDs are, in fact, carbon dots (CDs) formed ...
Junkai Ren, Dan Qu, Jiaolong Liu, Bing Wei, Plinio Innocenzi   +4 more
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Toward quantitatively fluorescent carbon-based “quantum” dots

Nanoscale, 2011
Carbon-based "quantum" dots (or "carbon dots") are generally defined as surface-passivated small carbon nanoparticles that are brightly fluorescent. Apparently, the carbon particle surface passivation in carbon dots is critical to their fluorescence performance. An effective way to improve the surface passivation is to dope the surface of the precursor
Parambath, Anilkumar, Xin, Wang, Li, Cao, Sushant, Sahu, Jia-Hui, Liu, Ping, Wang, Katerina, Korch, Kenneth N, Tackett, Alexander, Parenzan, Ya-Ping, Sun   +9 more
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Bioinspired Carbon Quantum Dots: An Antibiofilm Agents

Journal of Nanoscience and Nanotechnology, 2019
Carbon dots, very tiny carbon material with various surface passivations, have emerged as a new class of nanomaterials for various applications. Herein, we describe a simple, economical, and green approach for the synthesis of colloidal luminescent carbon dots (C-dots) by solvothermal method from fruit juice of Citrus limetta, an abundantly available ...
Asiya F, Shaikh, Mohaseen S, Tamboli, Rajendra H, Patil, Ashita, Bhan, Jalindar D, Ambekar, Bharat B, Kale   +5 more
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Graphene quantum dots, graphene oxide, carbon quantum dots and graphite nanocrystals in coals

Nanoscale, 2014
Six coal samples of different ranks were revealed to contain large amounts of graphene quantum dots, graphene oxide, carbon quantum dots, agglomerated GQDs and agglomerated carbon nanocrystals.
Yongqiang, Dong, Jianpeng, Lin, Yingmei, Chen, Fengfu, Fu, Yuwu, Chi, Guonan, Chen   +5 more
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Carbon Quantum Dots

2023
Karan Surana, Bhaskar Bhattacharya
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