2D hexagonal tessellations sustained by Br…Br/H contacts:From regular to semiregular to k-uniform tilings  

作　　者：Junjie Duan Dan Chen Long Chen Shuying Li Ting Chen Dong Wang 

机构地区：[1]CAS Key Laboratory of Molecular Nanostructure and Nanotechnology,CAS Research/Education Center for Excellence in Molecular Sciences,Beijing National Laboratory for Molecular Sciences(BNLMS),Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]Department of Chemistry,Northeast Normal University,Changchun 130024,China [4]Instrumental Analysis Center,Shanghai Jiao Tong University,Shanghai 200240,China [5]State Key Laboratory of Supramolecular Structure and Mate-rials,College of Chemistry,Jilin University,Changchun 130012,China

出　　处：《Chinese Chemical Letters》2025年第3期458-462,共5页中国化学快报(英文版)

基　　金：supported by the Strategic Priority Research Program of CAS(No.XDB0520201);the National Natural Science Foundation of China((Nos.22132007,22372175,22202208,22372030);CAS Project for Young Scientists in Basic Research(No.YSBR-053).

摘　　要：Achieving seamless tiling through the self-assembly of organic species has long fascinated scientists for its potential applications across various fields.However,constructing periodic nanostructures with high-order tessellation remains challenging,particularly in achieving precise control at the supramolecular level.In this study,we present the successful creation of multiple seamless 2D tessellations on Au(111)surface using versatile hexagonal tiles derived from a singular molecular unit,namely 2,6,10-tribromotricycloquinazoline.Through scanning tunneling microscopy imaging,seven distinct 2D tessellations,ranging from regular to semiregular to k-uniform tilings,are unveiled at the molecular level.Density functional theory calculations provide a theoretical basis for the formation of these complex 2D tessellation,highlighting the important role of the variability of Br···Br/H contacts in facilitating complex seamless 2D tessellations on surface.This work opens avenues for exploring possibilities in constructing intricate tiling patterns with diverse applications.

关 键 词：2D tessellation Molecular self-assembly Scanning tunneling microscopy Noncovalent interactions 

分 类 号：O641[理学—物理化学]