Into a New Plane - Three-Dimensionally Delocalised Nano-Graphenes

进入新的平面——三维离域纳米石墨烯

• 批准号: EP/V048554/1
• 负责人: Iain Wright
• 金额: $ 24.3万
• 依托单位: Loughborough University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FV048554%2F1
• 关键词: Into; New; Plane; Three; Dimensionally

Graphene is a cornerstone material in nanotechnology with its isolation in 2004 leading to the Nobel Prize in Physics for Geim and Novoselov in 2010. Graphene consists of a one-atom thick sheet of hexagonally arranged carbon atoms which share electrons to create a fully electronically delocalised surface. Nanographenes, and related graphene nanoribbons, are fragments of graphene which can be produced through controlled chemical synthesis. This has useful consequences such as reproducible synthesis and the ability to dictate the edge-structure structure of graphene. Controlling the edge-structure of these materials is key to their utility in applications including topological insulators, organic solar cells and hydrogen storage.This project will establish a new dimension in graphene, literally. It will yield unique 3D nanographenes with controlled edge-structure which are synthesised using robust "bottom-up" synthetic pathways. This will allow for synthesis on a larger scale and improved solubility compared to existing planar nanographenes and graphene nanoribbons. Through pi-extension or self-assembly methods these new molecular materials will be transformed into hierarchical nanostructures to produce fully three-dimensionally delocalised supramolecular and macromolecular constructs. The optoelectronic properties of these new nanographenes, and assemblies thereof, will be quantified using advanced photophysical and electrochemical tools complemented by charge transport measurements and computational insights. Benchmarking these functional properties against existing 2D nanographenes, and graphene nanoplatelets themselves, will establish a new chemical space in nanotechnology and produce unprecedented novel molecular materials.

石墨烯是纳米技术的基石材料，它在2004年被分离出来，导致2010年因盖姆和诺沃塞洛夫获得诺贝尔物理学奖。石墨烯由一原子厚的六角形排列的碳原子组成，这些碳原子共享电子，创建了一个完全电子离域的表面。纳米石墨烯和相关的石墨烯纳米带是石墨烯的碎片，可以通过受控的化学合成来生产。这产生了有用的结果，如可重复合成和决定石墨烯的边缘结构的能力。控制这些材料的边缘结构是它们在拓扑绝缘体、有机太阳能电池和氢气存储等应用中应用的关键。该项目将在石墨烯中建立一个新的维度。它将产生独特的具有受控边缘结构的3D纳米图形，这些纳米图形是使用健壮的“自下而上”的合成路径合成的。与现有的平面纳米管和石墨烯纳米带相比，这将允许更大规模的合成和更好的溶解性。通过pi延伸或自组装方法，这些新的分子材料将被转化为分级纳米结构，以产生完全三维非定域的超分子和大分子结构。这些新的纳米图形及其组件的光电性质将使用先进的光物理和电化学工具进行量化，并辅之以电荷传输测量和计算洞察力。将这些功能特性与现有的2D纳米管和石墨烯纳米片本身进行比较，将在纳米技术中建立一个新的化学空间，并产生前所未有的新型分子材料。