Step-Growth Annulative π-Extension Polymerization for Synthesis of Cove-Type Graphene Nanoribbons.
Step-Growth Annulative π-Extension Polymerization for Synthesis of Cove-Type Graphene Nanoribbons.
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DOI：
10.1021/jacs.9b11328
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发表时间：
2020-01
影响因子：
15
通讯作者：
Yuuta Yano;Feijiu Wang;N. Mitoma;Y. Miyauchi;Hideto Ito;K. Itami
中科院分区：
文献类型：
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作者：
Yuuta Yano;Feijiu Wang;N. Mitoma;Y. Miyauchi;Hideto Ito;K. Itami
石墨烯纳米带(GNR)是一种纳米宽的石墨烯条带，作为下一代碳材料的候选者，在材料科学中引起了极大的关注。由于它们的物理性质主要取决于它们的结构，因此精确合成结构明确的GNR是非常有必要的，以控制它们的性质。在这里，我们报告了一种分步生长的环状π延伸聚合，它允许快速和模块化地合成带有芘和/或冠烯二亚胺重复单元的盖型GNR。各种光谱分析证实了分离的GNRs的结构和光物理性质。此外，还实现了气流辅助下GNRs的均匀表面自组装。
Graphene nanoribbons (GNRs), nanometer-wide strips of graphene, are attracting significant attention in materials science as candidates for next-generation carbon materials. As their physical properties mainly depend on their structures, the precise synthesis of structurally well-defined GNRs is highly desirable to control their properties. Herein, we report a step-growth annulative π-extension polymerization that allows for the rapid and modular synthesis of cove-type GNRs with pyrene and/or coronene diimide repeating units. The structures and photophysical properties of the separated GNRs were confirmed by various spectroscopic analyses. In addition, gas-flow-assisted uniform on-surface self-assembly of the GNRs was accomplished.