The self-assemblies of a newly designed star-shaped molecule end-capped with bromine atoms studied by scanning tunneling microscopy

作     者：Jingfei Hou Bin Tu Qingdao Zeng Chuanlang Zhan Jiannian Yao Jingfei Hou;Bin Tu;Qingdao Zeng;Chuanlang Zhan;Jiannian Yao

作者机构：Beijing National Laboratory for Molecular SciencesCAS Key Laboratory of PhotochemistryInstitute of ChemistryChinese Academy of SciencesBeijing 100080China CAS Key Laboratory of Standardization and Measurement for NanotechnologyCAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology(NCNST)Beijing 100190China University of Chinese Academy of SciencesBeijing 100190China Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing 100149China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2020年第31卷第2期

页      面：353-356页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：The financial supports from the National Natural Science Foundation of China(NSFC,Nos.21773041 and 21327805) the National Basic Research Program of China(No.2016YFA0200700) 

主　　题：Molecular self-assemblies Star-shaped molecules Scanning tunneling microscopy(STM) Halogen...halogen interactions Bromine atoms 

摘      要：A new star-shaped molecule StOF-Br_3 containing oligofluorenes and halogen atoms(Bromine) has been synthesized and studied by Scanning Tunneling Microscopy(STM) at the highly oriented pyrolytic graphite(HOPG) *** have obtained the high-resolution self-assembled STM images,from which the highly ordered and closely packed non-porous arrangements of the StOF-Br_3 molecular selfassemblies at the heptanoic acid/HOPG surface could be *** molecular models and selfassembled StOF-Br_3 architectures have been given in the following ***,we have also figured out the surface free energy by the density functional theory(DFT) calculation,which proved that the halogen...halogen interaction was strong enough to stabilize the ordered molecular *** work verifies the existence of bromine...bromine interactions,and meanwhile provides a kind of effective approach for quickly building ordered molecular nanoarchitectures with large areas and different geometries.