From Chains to Arrays: Substrate-Mediated Self-Assembly of Diboron Molecules

Xiaoyu Hao, Huixia Yang*, Mengmeng Niu, Tingting Wang, Hongyan Ji, Iulia Emilia Brumboiu, Cesare Grazioli, Ambra Guarnaccio, Albano Cossaro, Yan Li, Jingsi Qiao, Quanzhen Zhang, Liwei Liu, Teng Zhang*, Yeliang Wang*

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

摘要

In this study, we explore the substrate-mediated control of self-assembly behavior in diboron molecules (C12H8B2O4, B2Cat2) using scanning tunneling microscopy (STM). The structural transformation of B2Cat2 molecules from one-dimensional (1D) molecular chains to two-dimensional (2D) molecular arrays was achieved by changing the substrate from Au(111) to bilayer graphene (BLG), highlighting the key role of substrate interactions in determining the assembly structure. Notably, the B-B bond in the molecular arrays on BLG is distinctly pronounced, reflecting a more refined molecular resolution with distinct electronic states than that on Au(111). Density functional theory (DFT) calculations confirm the weak interaction between B2Cat2 molecules and the BLG substrate, which facilitates the formation of 2D molecular arrays on BLG. This work demonstrates how controlling substrate properties enables the formation of 1D chains and 2D arrays, providing valuable insights for the design of next-generation molecular electronics and catalysis systems.

源语言英语
文章编号1952
期刊Nanomaterials
14
23
DOI
出版状态已出版 - 12月 2024

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