نتایج جستجو برای: carbon dots

تعداد نتایج: 306919  

Journal: :Physical review letters 2002
M R Buitelaar A Bachtold T Nussbaumer M Iqbal C Schönenberger

We have measured the differential conductance of individual multiwall carbon nanotubes. Coulomb blockade and energy level quantization are observed. The electron levels are nearly fourfold degenerate (including spin) and their evolution in magnetic field (Zeeman splitting) agrees with a g factor of 2. In zero magnetic field the sequential filling of states evolves with spin S according to S = 0...

2010
Bernhard Wunsch Mikhail D. Lukin Eugene A. Demler Ana Maria Rey A. M. Rey

Journal: :Chemical communications 2015
Fei Zhao Zhe Li Lixia Wang Chuangang Hu Zhipan Zhang Chun Li Liangti Qu

We report the biodegradable supramolecular quantum dots (SQDs) of hydrogen-bonded graphitic carbon nitride (g-C3N4) with low cytotoxicity and desirable biocompatibility for promising upconversion-enabled fluorescent bio-probes. A remarkable biodegradation of up to 97% within 24 hours is presented.

Journal: :Brazilian Journal of Physics 2002

Journal: :Frontiers in Bioengineering and Biotechnology 2016

Journal: :Advanced photonics research 2023

Carbon dots have many new and interesting phenomena the concentration-dependent luminescence wavelength is an intriguing one. Luminescent carbon recently gained interest due to their such as its peak emission. While there been reports discussions on this phenomenon, mechanism continues be poorly understood. Herein, observations nitrogen–sulfur codoping (NSCDs) diluted at different concentration...

Journal: :Materials advances 2022

Carbon dots were synthesized using solvent-free, microwave synthesis and photoreduction of methyl viologen was studied under visible wavelength light irradiation.

Journal: :Journal of the American Chemical Society 2009

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