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相关论文: Molecular theory of graphene chemical modification

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Applying to graphene oxides, molecular theory of graphene is based on the oxide molecular origin when it is considered as a final product in the succession of a graphene molecule polyderivatives related to a particular oxidation reaction.…

材料科学 · 物理学 2017-09-13 Elena F. Sheka , Nadezhda A. Popova

Molecular-crystalline duality of graphene ensures a tight alliance of its physical and chemical natures, each of which is unique in its own way. The paper examines the physical-chemical harmony and/or confrontation in terms of the molecular…

介观与纳米尺度物理 · 物理学 2013-12-05 Elena F. Sheka

Odd electrons of benzenoid units and correlation of these electrons having different spins are the main concepts of the molecular theory of graphene. In contrast to the theory of aromaticity, the molecular theory is based on the fact that…

材料科学 · 物理学 2013-02-19 E. F. Sheka

Basing on the molecular theory of graphene, the influence of the chemical modification of edge atoms of a graphene sheet is studied in terms of mechanochemical reactions. The mechanical behavior of graphene is shown to be not only highly…

材料科学 · 物理学 2013-01-08 Vera Popova , Nadezhda Popova , Elena Sheka

The paper presents evidence of a rather strong correlation of odd electrons in the singlet state of graphene. Due to the correlation, the chemical modification of graphene can be considered following a certain algorithmic computational…

材料科学 · 物理学 2012-01-10 E. F. Sheka , N. A. Popova

In view of a formal topology, two common terms, namely, connectivity and adjacency, determine the quality of C-C bonds of sp2 nanocarbons. The feature is the most sensitive point of the inherent topology of the species so that such external…

材料科学 · 物理学 2013-01-15 Elena Sheka , Vera Popova , Nadezhda Popova

Graphene's intrinsically corrugated and wrinkled topology fundamentally influences its electronic, mechanical, and chemical properties. Experimental techniques allow the manipulation of pristine graphene and the controlled production of…

材料科学 · 物理学 2025-09-09 Fabian L. Thiemann , Patrick Rowe , Andrea Zen , Erich A. Müller , Angelos Michaelides

Graphene - a monolayer of carbon atoms densely packed into a hexagonal lattice - has one of the strongest possible atomic bonds and can be viewed as a robust atomic-scale scaffold, to which other chemical species can be attached without…

A new formula for elastic bending modulus of monolayer graphene is derived analytically from an empirical potential for solid-state carbon-carbon bonds. Two physical origins are identified for the non-vanishing bending modulus of the…

材料科学 · 物理学 2015-05-13 Qiang Lu , Marino Arroyo , Rui Huang

The correlation of odd electrons in graphene turns out to be significant so that the species should be attributed to correlated ones. This finding profoundly influences the computational strategy addressing it to multireference…

材料科学 · 物理学 2012-01-27 E. F. Sheka

Graphene is a realization of an esoteric class of materials -- electronic crystalline membranes. We study the interplay between the free electrons and the two-dimensional crystal, and find that it induces a substantial effect on the elastic…

材料科学 · 物理学 2009-03-31 Doron Gazit

Graphene, the one-atom-thick sp2 hybridized carbon crystal, displays unique electronic, structural and mechanical properties, which promise a large number of interesting applications in diverse high tech fields. Many of these applications…

介观与纳米尺度物理 · 物理学 2016-09-27 Tommaso Cavallucci , Khatuna Kakhiani , Riccardo Farchioni , Valentina Tozzini

In this review, we provide an in-depth description of the physics of monolayer and bilayer graphene from a theorist's perspective. We discuss the physical properties of graphene in an external magnetic field, reflecting the chiral nature of…

材料科学 · 物理学 2014-11-20 D. S. L. Abergel , V. Apalkov , J. Berashevich , K. Ziegler , Tapash Chakraborty

A great efficacy of molecular quantum chemistry applied to basic graphene problems has been recently demonstrated by the authors when studying the formation of peculiar composites between carbon nanotubes and graphene as well as considering…

介观与纳米尺度物理 · 物理学 2011-02-07 Elena F Sheka , Nadezhda A Popova

Defects change essentially not only electronic but also chemical properties of graphene being centers of its chemical activity. Their functionalization is a way to modify electronic and crystal structure of graphene which may be important…

材料科学 · 物理学 2009-01-05 D. W. Boukhvalov , M. I. Katsnelson

Graphene is a new material that exhibits remarkable properties from both fundamental and applied issues. This is a 2D matter system whose physical and mechanical features have been approached by using tight binding model, first principle…

强关联电子 · 物理学 2011-08-10 Lalla Btissam Drissi , El Hassan Saidi , Mosto Bousmina

The geometry of two-dimensional crystalline membranes dictates their mechanical, electronic and chemical properties. The local geometry of a surface is determined from the two invariants of the metric and the curvature tensors. Here we…

介观与纳米尺度物理 · 物理学 2014-03-07 Alejandro A. Pacheco Sanjuan , Zhengfei Wang , Hamed Pour Imani , Mihajlo Vanević , Salvador Barraza-Lopez

The properties of polycrystalline materials are often dominated by the size of their grains and by the atomic structure of their grain boundaries. These effects should be especially pronounced in 2D materials, where even a line defect can…

Patterned graphene shows substantial potential for applications in future molecular-scale integrated electronics. Environmental effects are a critical issue in a single layer material where every atom is on the surface. Especially…

Two dimensional layers of graphene are currently drawing a great attention in fundamental and applied nanoscience. Graphene consists of interconnected hexagons of carbon atoms as in graphite. This article presents for the first time the…

综合物理 · 物理学 2008-04-28 Raji Heyrovska
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