Launching Graphene into 3D Space: Symmetry, Topology, and Strategies for Bottom-Up Synthesis of Schwarzites

IF 3.3 2区 化学 Q1 CHEMISTRY, ORGANIC
Alexey V. Ignatchenko
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引用次数: 0

Abstract

Schwarzites are hypothetical carbon allotropes in the form of a continuous negatively curved surface with three-dimensional periodicity. These materials of the future attract interest because of their anticipated large surface area per volume, high porosity, tunable electric conductivity, and excellent mechanical strength combined with light weight. A three-decade-long history attempting schwarzite synthesis from gas-phase carbon atoms went without success. Design of schwarzites is both a digital art and the science of placing tiles of sp2-carbon polygons on mathematically defined triply periodic minimal surfaces. The knowledge of how to connect polygons in sequence using the rules of symmetry unlocks paths for the bottom-up synthesis of schwarzites by organic chemistry methods. Schwarzite tiling by heptagons is systematically analyzed and classified by symmetry and topology. For the first time, complete plans for the bottom-up synthesis of many schwarzites are demonstrated. A trimer of heptagons is suggested as the key building block for most synthetic schemes.

Abstract Image

将石墨烯带入三维空间:对称性、拓扑结构和自下而上合成 Schwarzites 的策略
施瓦兹石是一种具有三维周期性的连续负弯曲表面形式的假想碳同素异形体。这些未来材料之所以备受关注,是因为它们具有预期的大单位体积表面积、高孔隙率、可调电导率和优异的机械强度,而且重量轻。三十年来,人们一直在尝试用气相碳原子合成石英,但都没有成功。施华洛世奇的设计既是一门数字艺术,也是一门将 sp2-碳多边形瓦片放置在数学定义的三重周期性极小表面上的科学。如何利用对称规则将多边形依次连接起来的知识,为利用有机化学方法自下而上地合成石榴石开辟了道路。通过对称性和拓扑学,系统地分析和分类了七芒星石的平铺。首次展示了自下而上合成多种石英的完整计划。建议将七边形的三聚体作为大多数合成方案的关键构件。
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来源期刊
Journal of Organic Chemistry
Journal of Organic Chemistry 化学-有机化学
CiteScore
6.20
自引率
11.10%
发文量
1467
审稿时长
2 months
期刊介绍: Journal of Organic Chemistry welcomes original contributions of fundamental research in all branches of the theory and practice of organic chemistry. In selecting manuscripts for publication, the editors place emphasis on the quality and novelty of the work, as well as the breadth of interest to the organic chemistry community.
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