New Strategy for Synthesis of Atomically Precise Graphene Nanoribbons

合成原子级精确石墨烯纳米带的新策略

• 批准号: 1707399
• 负责人: Guangbin Dong
• 金额: $ 42万
• 依托单位: University of Chicago
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-08-01 至 2021-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1707399&HistoricalAwards=false
• 关键词: New; Strategy; Synthesis; Atomically; Precise

This award is funded by the Macromolecular, Supramolecular and Nanochemistry Program in the Division of Chemistry. Professor Guangbin Dong of the University of Chicago is supported to develop new approaches for the synthesis of single carbon atom thick graphene nanoribbons arranged in precise armchair pattern. Each ribbon is a tiny fraction of a human hair in width. These materials have potential applications as semiconductors in light-weight and flexible electronic devices. This project addresses the challenges of preparing ribbons with various chemical functional groups and band structures to be incorporated in a new generation of molecular devices. While conducting the project, the Dong group is actively participating in the Leadership Alliance Summer Research Early Identification Program. The intention is to integrate the project with education and outreach and to encourage diverse undergraduate students to explore careers in science and engineering. The project aims to offer an efficient approach to prepare armchair graphene nanoribbons (aGNRs) with controlled electron band structures and high charge mobility. The project advance three main objectives: to enable a unified approach to prepare aGNRs with various widths; to synthesize aGNRs with precisely installed functional edges; and to develop a chain-growth-polymerization approach to access aGNRs with controlled lengths and prepare aGNR-based P/N junctions. The project makes available a wide range of aGNRs, designed to test and validate hypotheses and theoretical models proposed previously by physicists and physical chemists. The results are expected to accelerate the physical and theoretical studies of these intriguing materials and to advance the understanding of these graphene-like one-dimensional polymers, which in turn would further inspire and stimulate the development of other new conjugated organic semiconducting materials.

该奖项由化学系的高分子、超分子和纳米化学项目资助。芝加哥大学的董广斌教授被支持开发新的方法来合成以精确扶手椅图案排列的单碳原子厚的石墨烯纳米带。每条丝带的宽度只有人类头发的一小部分。这些材料具有作为半导体在轻质和柔性电子设备中的潜在应用。该项目解决了在新一代分子器件中制备具有各种化学官能团和带结构的带的挑战。在进行该项目的同时，DONG小组正在积极参与领导力联盟暑期研究早期识别计划。其目的是将该项目与教育和推广相结合，并鼓励不同的本科生探索科学和工程领域的职业。该项目旨在提供一种有效的方法来制备具有可控电子能带结构和高电荷迁移率的扶手椅石墨烯纳米带(AGNRs)。该项目提出了三个主要目标：采用统一的方法来制备不同宽度的aGNR；合成具有精确安装的功能边缘的aGNR；以及开发一种链生长-聚合方法来获得长度可控的aGNR，并制备基于aGNR的P/N结。该项目提供了广泛的aGNR，旨在测试和验证物理学家和物理化学家之前提出的假设和理论模型。这些结果有望加速这些有趣的材料的物理和理论研究，并促进对这些石墨烯类一维聚合物的理解，这反过来将进一步激励和刺激其他新的共轭有机半导体材料的发展。

项目成果

Liquid-phase bottom-up synthesis of graphene nanoribbons

• DOI: 10.1039/c9qm00519f
• 发表时间: 2020
• 期刊: Materials Chemistry Frontiers
• 影响因子: 7
• 作者: Ki-Young Yoon;Guangbin Dong