Results 271 to 280 of about 39,355 (307)

Carbon Nanotube Quantum Dots

physica status solidi (b), 2002
We present a theoretical study of the local electronic properties of quantum-dot nanotubes composed of different isolated nanotubes joined via modelled junctions (defect pairs composed of heptagon and pentagon along the axial direction of pure nanotubes).
C.G. Rocha, T.G. Dargam, A. Latg�
openaire   +1 more source

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
openaire   +1 more source

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 ...
openaire   +1 more source

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
openaire   +2 more sources

Rapid Detection of Bacteria by Carbon Quantum Dots

Journal of Biomedical Nanotechnology, 2011
This work demonstrated a fluorescence measurement method for rapid detection of bacteria and their counting by using water-soluble carbon quantum dots (CQDs) as a fluorescence marker while sewage water bacteria were detection target bacteria. Highly luminescent water-soluble CQDs were prepared by carbonizing waste part of rice straw materials in a ...
Tapas K, Mandal, Nargish, Parvin
openaire   +2 more sources

Carbon “Quantum” Dots for Fluorescence Labeling of Cells

ACS Applied Materials & Interfaces, 2015
The specifically synthesized and selected carbon dots of relatively high fluorescence quantum yields were evaluated in their fluorescence labeling of cells. For the cancer cell lines, the cellular uptake of the carbon dots was generally efficient, resulting in the labeling of the cells with bright fluorescence emissions for both one- and two-photon ...
Jia-Hui, Liu, Li, Cao, Gregory E, LeCroy, Ping, Wang, Mohammed J, Meziani, Yiyang, Dong, Yuanfang, Liu, Pengju G, Luo, Ya-Ping, Sun   +8 more
openaire   +2 more sources

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
openaire   +2 more sources

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
openaire   +2 more sources

Luminescence of carbon quantum dots in amorphous carbon

Journal of Optical Technology
Subject of study. The luminescence spectrum of amorphous protonated carbon (a-C:H) containing carbon quantum dots is studied. Aim of study. How the peak in the luminescence spectrum of a-C:H is affected by the presence of fragments with different configurations is determined. Method. The typical spectra are compared against those of the closest analogs:
Maksim S. Chekulaev, Sergey G. Yastrebov
openaire   +1 more source

Biogenic Carbon Quantum Dots: Synthesis and Applications

Current Medicinal Chemistry
Abstract: The new class of nanomaterials termed carbon dots: a quasi-spherical nanoparticle having a size less than 10 nm, possesses some unique characteristics like good aqueous solubility, colloidal stability, resistance to photobleaching, and fluorescence tunability, resulting in the unfolding of their various properties and their usage in ...
Ankita Deb, Devasish Chowdhury
openaire   +2 more sources