Results 251 to 260 of about 60,665 (288)

Graphene quantum dots redefine nanobiomedicine

Materials Science and Engineering: C, 2020
Carbon-based nanomaterials have established a prime position as drug delivery carriers. It is very interesting to see that a carbon nanostructure could be used as a drug too, instead of its regular application as a drug delivery carrier. In this aspect, graphene quantum dots (GQDs) are now in the spotlight.
T.K. Henna, K. Pramod
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Solution‐Processable Graphene Quantum Dots

ChemPhysChem, 2013
AbstractThis minireview describes recent progress in solution‐processable graphene quantum dots (SGQDs). Advances in the preparation, modification, properties, and applications of SGQDs are highlighted in detail. As one of emerging nanostructured materials, possible ongoing research related to the precise control of the lateral size, edge structure and
Xuejiao, Zhou, Shouwu, Guo, Jingyan, Zhang   +2 more
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Graphene Quantum Dots for Radiotherapy

ACS Applied Materials & Interfaces, 2018
Radiation therapy is a kind of tumor treatment that has been widely employed in clinics, but its therapeutic effect is largely hampered by various factors. Currently, considerable efforts are being made in the search for effective and safe radiosensitizers. A nano-radiosensitizer is an ideal choice for improving the effects of tumor radiotherapy due to
Jing Ruan, Ying Wang, Fang Li, Renbing Jia, Guangming Zhou, Chunlin Shao, Liqi Zhu, Malin Cui, Da-Peng Yang, Shengfang Ge   +9 more
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Quantum Dots in Graphene Nanoribbons

Nano Letters, 2017
Graphene quantum dots (GQDs) hold great promise for applications in electronics, optoelectronics, and bioelectronics, but the fabrication of widely tunable GQDs has remained elusive. Here, we report the fabrication of atomically precise GQDs consisting of low-bandgap N = 14 armchair graphene nanoribbon (AGNR) segments that are achieved through edge ...
Shiyong Wang, Neerav Kharche, Eduardo Costa Girão, Xinliang Feng, Klaus Müllen, Vincent Meunier, Roman Fasel, Pascal Ruffieux   +7 more
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Graphene Quantum Dots

2014
Single particle properties of graphene quantum dots.- Electron-electron interaction in gated graphene nanostructures.- Magnetic properties of gated graphene nanostructures.- Optical properties of graphene nanostructures.
Alev Devrim Güçlü, Pawel Potasz, Marek Korkusinski, Pawel Hawrylak   +3 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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Colloidal Graphene Quantum Dots

The Journal of Physical Chemistry Letters, 2010
Graphene is a unique type of semiconductor with zero band gap and zero effective masses of charge carriers. Thus, in graphene quantum dots, we expect many interesting phenomena that are different from those in quantum dots of any other semiconductors.
Liang-shi Li, Xin Yan
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Hexagonal graphene quantum dots

physica status solidi (RRL) – Rapid Research Letters, 2016
We study hexagonal graphene quantum dots, using density functional theory, to obtain a quantitative description of the electronic properties and their size dependence, considering disk and ring geometries with both armchair and zigzag edges. We show that the electronic properties of quantum dots with armchair edges are more sensitive to structural ...
Ghosh, Sumit, Schwingenschlögl, Udo
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Functional microspheres of graphene quantum dots

Nanotechnology, 2012
Graphene-quantum-dot microspheres (GQDSs) have been prepared by assembly of graphene quantum dots (GQDs) via a water-in-oil (W/O) emulsion technique without the addition of any surfactants. Although made of quantum-sized graphene dots, the as-formed GQDSs are solid and remain intact after slight ultrasonication. The versatile W/O emulsion method allows
Yi, Ding, Huhu, Cheng, Ce, Zhou, Yueqiong, Fan, Jia, Zhu, Huibo, Shao, Liangti, Qu   +6 more
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Graphene Quantum Dots for Optical Bioimaging

Small, 2019
AbstractGraphene quantum dots (GQDs) have shown great potential in bioimaging applications due to their excellent biocompatibility, low cytotoxicity, feasibility for surface functionalization, physiological stability, and tunable fluorescence properties.
Huiting Lu, Wenjun Li, Haifeng Dong, Menglian Wei   +3 more
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