Results 221 to 230 of about 94,353 (263)

Fluorescent carbon dot (C-dot) nanoclusters

Nanotechnology, 2014
Fluorescent carbon dot (C-dot) nanoclusters composed of C-dot-loaded hollow silica spheres are obtained via the dehydration of mannose, which is adsorbed onto hollow silica spheres or poly(ethylene glycol)-graft-hollow silica spheres (PEG-g-hollow silica). The structure of C-dot nanoclusters are confirmed using 1H NMR, FTIR, TEM and TGA.
Guan, Wang, Xiaoyong, Pan, Liuqun, Gu, Wei, Ren, Weiren, Cheng, Jatin N, Kumar, Ye, Liu   +6 more
openaire   +2 more sources

Quantum Dots in Carbon Nanotubes

Japanese Journal of Applied Physics, 2000
A technology to fabricate electrical contacts on individual single-wall carbon nanotubes has been developed, and electrical measurements are carried out below 4.2 Kelvin. The electrical transport property at low temperatures has basically been characterized as a quantum dot with a pronounced Coulomb blockade effect and zero dimensional confined ...
K.Ishibashi, T.Ida, M.Suzuki, K.Tsukagoshi, Y.Aoyagi   +4 more
openaire   +1 more source

Fluorescent carbon dots functionalization

Advances in Colloid and Interface Science, 2019
Carbon dots (CDs), as a new type of luminescent zero-dimensional carbon nanomaterial, have been applied in a variety of fields. Currently, functionalization of CDs is an extremely useful method for effectively tuning their intrinsic structure and surface state.
Bin Bin, Chen, Meng Li, Liu, Chun Mei, Li, Cheng Zhi, Huang   +3 more
openaire   +2 more sources

Nanobiotechnology of Carbon Dots: A Review

Journal of Biomedical Nanotechnology, 2016
In recent years, carbon dots (CDs) have gained increasing attention owing to their unique properties and enormous potential for several biomedical and technological applications. CDs are biocompatible, have a small size with a relatively large surface area, are photostable, and have customizable photoluminescence properties. This review is divided into
Nelson, Durán, Mateus B, Simões, Ana C M, de Moraes, Wagner J, Fávaro, Amedea B, Seabra   +4 more
openaire   +2 more sources

Chemiluminescence behavior of the carbon dots and the reduced state carbon dots

Journal of Luminescence, 2014
Abstract Potassium permanganate (KMnO 4 ) can react with two different carbon nanoparticles, i.e., carbon dots (CDs) and reduced state carbon dots (r-CDs), in a strong acid medium to generate chemiluminescence (CL). Furthermore, the different CL intensities and CL behaviors due to the different surface groups on these two kinds of carbon ...
Ping Teng, Jianxin Xie, Yijuan Long, Xiaoxiao Huang, Rui Zhu, Xiliang Wang, Liping Liang, Yuming Huang, Huzhi Zheng   +8 more
openaire   +1 more source

Solvatochromic Carbon Dots

The Journal of Physical Chemistry Letters
Exploring the solvatochromic processes of carbon dots (C-dots) is significant for both fundamental science and their corresponding applications. At present, there are a few relevant concerns, such as the exact solvatochromic photophysical picture and positive and negative solvatochromism versus the composition and structure of C-dots, which have ...
Zhiwen Li, Tianli Huang, Jiancong Zheng, Zhou Lu, Yunsheng Xia   +4 more
openaire   +2 more sources

Carbon quantum dots and their applications

Chemical Society Reviews, 2015
This review covers the progress in the research and development of carbon quantum dots and their applications in chemical sensing, biosensing, bioimaging, nanomedicine, photocatalysis and electrocatalysis.
Shi Ying, Lim, Wei, Shen, Zhiqiang, Gao
openaire   +2 more sources

Carbon Dots

As a novel form of carbon-based nanomaterial, carbon dots (CDs) have attracted considerable interest in recent years because of their intriguing properties, including small particle sizes, low costs, eco-friendliness, an abundance of functional groups, tuneable optical properties, strong conductivity, minimal cytotoxicity, and good biocompatibility ...
Oshin Verma, Divya Bisht, Deena Prakash
openaire   +2 more sources

Carbon Dots as Antioxidants and Prooxidants

Journal of Biomedical Nanotechnology, 2011
In this study we report the effect of classical CdSe/ZnS quantum dots and novel spherical carbon dots on generation of singlet oxygen and other reactive oxygen species (ROS) in aqueous solutions in vitro. Free radicals were initiated either chemically using 2,2'-azodiisobutyramidine dihydrochloride (AAPH) or by radiation with a blue light source ...
Ingeborg Lie, Christensen, Ya-Ping, Sun, Petras, Juzenas   +2 more
openaire   +2 more sources

Sustainable carbon-dots: recent advances in green carbon dots for sensing and bioimaging

Journal of Materials Chemistry B, 2017
This review article highlights recent progress in use of green precursors for synthesis of carbon-dots and their applications in fluorescence-based sensing and bioimaging.
Vinay Sharma, Pranav Tiwari, Shaikh M. Mobin   +2 more
openaire   +2 more sources