Journal ArticleDOI
C3N—A 2D Crystalline, Hole-Free, Tunable-Narrow-Bandgap Semiconductor with Ferromagnetic Properties
Siwei Yang,Wei Li,Wei Li,Cai-Chao Ye,Gang Wang,He Tian,Chong Zhu,Peng He,Guqiao Ding,Xiaoming Xie,Xiaoming Xie,Yang Liu,Yeshayahu Lifshitz,Yeshayahu Lifshitz,Shuit-Tong Lee,Zhenhui Kang,Mianheng Jiang,Mianheng Jiang +17 more
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TLDR
Surprisingly, C3 N exhibits a ferromagnetic order at low temperatures (<96 K) when doped with hydrogen, which opens the door for both fundamental basic research and possible future applications.Abstract:
Graphene has initiated intensive research efforts on 2D crystalline materials due to its extraordinary set of properties and the resulting host of possible applications. Here the authors report on the controllable large-scale synthesis of C3 N, a 2D crystalline, hole-free extension of graphene, its structural characterization, and some of its unique properties. C3 N is fabricated by polymerization of 2,3-diaminophenazine. It consists of a 2D honeycomb lattice with a homogeneous distribution of nitrogen atoms, where both N and C atoms show a D6h -symmetry. C3 N is a semiconductor with an indirect bandgap of 0.39 eV that can be tuned to cover the entire visible range by fabrication of quantum dots with different diameters. Back-gated field-effect transistors made of single-layer C3 N display an on-off current ratio reaching 5.5 × 1010 . Surprisingly, C3 N exhibits a ferromagnetic order at low temperatures (<96 K) when doped with hydrogen. This new member of the graphene family opens the door for both fundamental basic research and possible future applications.read more
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Progress on carbon dots and hydroxyapatite based biocompatible luminescent nanomaterials for cancer theranostics
TL;DR: In this article , the development of carbon dots and nanohydroxyapatite (nHA) based nanomaterials as multifunctional agents for cancer has been briefly discussed, and the emphasis has been given to different synthesis strategies leading to different morphologies and tunable PL spectra, followed by their diverse applications as biocompatible theranostic agents.
Journal ArticleDOI
Potential Unwinding of Double-Stranded DNA upon Binding to a Carbon Nitride Polyaniline (C3N) Nanosheet.
Liang Zhao,Zonglin Gu +1 more
TL;DR: In this article, the interaction between C3N and a double-stranded DNA (dsDNA) segment was investigated by using a molecular dynamics simulation approach to expose the underlying biological effect of carbon nitride polyaniline (C3N) to dsDNA and the corresponding molecular basis.
Journal ArticleDOI
Thermal transport in two-dimensional carbon nitrides: A comparative molecular dynamics study
Wenhao Sha,Fenglin Guo +1 more
TL;DR: In this paper , the authors investigated the thermal transport properties of 2D carbon-nitride nanostructures and found that the degradation of thermal conductivity is due to regularly distributed holes and absence of CC bonds.
Journal ArticleDOI
Strain and electric field tunable electronic and optical properties in antimonene/C3N van der Waals heterostructure
Lichen Gao,Bin Zhou,Jinzhong Zhang,Kai Jiang,Liyan Shang,Zhigao Hu,Zhigao Hu,Zhigao Hu,Junhao Chu,Junhao Chu,Junhao Chu +10 more
TL;DR: In this article, the authors systematically studied the electronic properties of antimonene/C3N van der Waals (vdW) heterojunction and showed that the heterostructure has an inherent type-II band alignment with an indirect band gap.
Journal ArticleDOI
Facile oxidation reaction to produce monolayered highly crystalline nitrogen-doped graphene quantum dots
TL;DR: In this article , a simple post synthesis oxidation step was shown to significantly improve the overall crystallinity and stability of the nanostructures via removal of reaction by-products and oxidation of reactive functional groups, generating oxidized nitrogen-doped graphene quantum dots (Ox-NGQDs).
References
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Electric Field Effect in Atomically Thin Carbon Films
Kostya S. Novoselov,Andre K. Geim,Sergey V. Morozov,Da Jiang,Y. Zhang,S. V. Dubonos,Irina V. Grigorieva,A. A. Firsov +7 more
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TL;DR: Owing to its unusual electronic spectrum, graphene has led to the emergence of a new paradigm of 'relativistic' condensed-matter physics, where quantum relativistic phenomena can now be mimicked and tested in table-top experiments.
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The electronic properties of graphene
TL;DR: In this paper, the basic theoretical aspects of graphene, a one-atom-thick allotrope of carbon, with unusual two-dimensional Dirac-like electronic excitations, are discussed.
Journal ArticleDOI
A metal-free polymeric photocatalyst for hydrogen production from water under visible light
Xinchen Wang,Kazuhiko Maeda,Arne Thomas,Kazuhiro Takanabe,Gang Xin,Johan M. Carlsson,Kazunari Domen,Markus Antonietti +7 more
TL;DR: It is shown that an abundant material, polymeric carbon nitride, can produce hydrogen from water under visible-light irradiation in the presence of a sacrificial donor.
Journal ArticleDOI
Metal-free efficient photocatalyst for stable visible water splitting via a two-electron pathway
Juan Liu,Yang Liu,Naiyun Liu,Yuzhi Han,Xing Zhang,Hui Huang,Yeshayahu Lifshitz,Yeshayahu Lifshitz,Shuit-Tong Lee,Jun Zhong,Zhenhui Kang +10 more
TL;DR: The design and fabrication of a metal-free carbon nanodot–carbon nitride (C3N4) nanocomposite is reported and its impressive performance for photocatalytic solar water splitting is demonstrated.