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

基本信息

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

项目摘要

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得到支持，开发合成以精确的扶手椅图案排列的单碳原子厚石墨烯纳米带的新方法。每条丝带的宽度只是人类头发的一小部分。这些材料作为轻质柔性电子设备中的半导体具有潜在的应用前景。该项目解决了制备具有各种化学官能团和能带结构的带材以纳入新一代分子器件的挑战。在开展该项目的同时，董课题组还积极参与领导力联盟夏季研究早期识别项目。其目的是将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生涯。该项目旨在提供一种有效的方法来制备具有受控电子能带结构和高电荷迁移率的扶手椅石墨烯纳米带（aGNR）。该项目推进了三个主要目标：采用统一的方法来制备各种宽度的 aGNR；合成具有精确安装的功能边缘的 aGNR；并开发一种链增长聚合方法来访问具有受控长度的 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先前提出的假设和理论模型。研究结果预计将加速这些有趣材料的物理和理论研究，并增进对这些类石墨烯一维聚合物的理解，进而进一步激发和刺激其他新型共轭有机半导体材料的发展。