Magnetism engineering of nanographene:An enrichment strategy by co-depositing diverse precursors on Au(111)  

作　　者：Hui Zhang Jianchen Lu Yong Zhang Lei Gao Xin-Jing Zhao Yuan-Zhi Tan Jinming Cai 

机构地区：[1]School of Pharmacy,China Pharmaceutical University,Nanjing 211198,China [2]Jiangsu Aosaikang Pharmaceutical Co.,Ltd.,Nanjing 211112,China [3]Key Laboratory of Modern Preparation of TCM,Ministry of Education,Jiangxi University of Chinese Medicine,Nanchang 330004,China

出　　处：《Chinese Chemical Letters》2023年第1期206-210,共5页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.61901200);the National Recruitment Program for Young Professionals(No.132310976002);the Yunnan Fundamental Research Projects(Nos.2019FD041,202101AV070008,202101AW070010 and 202101AU070043);the Strategic Priority Research Program of Chinese Academy of Sciences(No.XDB30000000);the Dongguan Innovation Research Team Program。

摘　　要：The magnetism of nanographene is dominated by the structure of its carbon skeleton.However,the magnetism engineering of nanographene is hindered due to finite precursors.Here,we demonstrate an ingenious synthetic strategy to engineer the magnetism of nanographene through hetero-coupling two precursors on Au(111)surface.Bond-resolved scanning tunneling microscopy and spectroscopy results show that two homo-coupled products host a closed-shell structure,while the products with five membered ring defects perform as an open-shell one with the total spin number of 1/2,confirmed by spin-polarized density functional theory calculations.While two hetero precursors on Au(111)substrate,the heterocoupled products both perform as the magnetic structure with total spin quantum numbers of 1/2 and 1,resulting from carbon skeleton transformations.Our work provides an effective way to engineer the magnetism of nanographene by enriching the magnetic products simultaneous,which could be extended into other controllable magnetic nanographene instruction.

关 键 词：NANOGRAPHENE Magnetism enrichment CO-DEPOSITION Scanning tunneling microscope 

分 类 号：O641[理学—物理化学]