制作
分散性
单体
纳米技术
石墨烯纳米带
化学
低聚物
石墨烯
序列(生物学)
聚合物
材料科学
高分子化学
有机化学
医学
替代医学
病理
生物化学
作者
Jiangliang Yin,Peter H. Jacobse,Daniel Pyle,Ziyi Wang,Michael F. Crommie,Guangbin Dong
摘要
While enormous progress has been achieved in synthesizing atomically precise graphene nanoribbons (GNRs), the preparation of GNRs with a fully predetermined length and monomer sequence remains an unmet challenge. Here, we report a fabrication method that provides access to structurally diverse and monodisperse "designer" GNRs through utilization of an iterative synthesis strategy, in which a single monomer is incorporated into an oligomer chain during each chemical cycle. Surface-assisted cyclodehydrogenation is subsequently employed to generate the final nanoribbons, and bond-resolved scanning tunneling microscopy is utilized to characterize them.
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