On-surface synthesis and edge states of NBN-doped zigzag graphene nanoribbons  

作　　者：Xiao Chang Li Huang Yixuan Gao Yubin Fu Ji Ma Huan Yang Junzhi Liu Xiaoshuai Fu Xiao Lin Xinliang Feng Shixuan Du Hong-Jun Gao 

机构地区：[1]University of Chinese Academy of Sciences,Beijing 100190,China [2]Beijing National Center for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China [3]Center for Advancing Electronics Dresden(CfAED)and Faculty of Chemistry and Food Chemistry,Technische Universität Dresden,Dresden D-01069,Germany [4]Max Planck Institute of Microstructure Physics,Weinberg 2,Halle 06120,Germany [5]Department of Chemistry,State Key Laboratory of Synthetic Chemistry,The University of Hong Kong,Hong Kong 999077,China [6]Songshan Lake Materials Laboratory,Dongguan 523808,China

出　　处：《Nano Research》2023年第7期10436-10442,共7页纳米研究（英文版）

基　　金：The work was supported by grants from the National Key Research and Development Program of China(No.2019YFA0308500);the National Natural Science Foundation of China(No.61888102);the Chinese Academy of Sciences(Nos.XDB30000000 and YSBR-003);the EU Graphene Flagship(Graphene Core 3,No.881603);the H2020-MSCA-ITN(ULTIMATE,No.813036);the Center for Advancing Electronics Dresden(CfAED);the H2020-EU.1.2.2.-FET Proactive Grant(LIGHT-CAP,No.101017821);the DFG-SNSF Joint Switzerland-German Research Project(EnhanTopo,No.429265950).

摘　　要：Zigzag graphene nanoribbons(ZGNRs)with spin-polarized edge states have potential applications in carbon-based spintronics.The electronic structure of ZGNRs can be effectively tuned by different widths or dopants,which requires delicately designed monomers.Here,we report the successful synthesis of ZGNR with a width of eight carbon zigzag lines and nitrogen-boronnitrogen(NBN)motifs decorated along the zigzag edges(NBN-8-ZGNR)on Au(111)surface,which starts from a specially designed U-shaped monomer with preinstalled NBN units at the zigzag edge.Chemical-bond-resolved non-contact atomic force microscopy(nc-AFM)imaging confirms the zigzag-terminated edges and the existence of NBN dopants.The electronic states distributed along the zigzag edges have been revealed after a silicon-layer intercalation at the interface of NBN-8-ZGNR and Au(111).Our work enriches the ZGNR family with a new dopant and larger width,which provides more candidates for future carbonbased nanoelectronic and spintronic applications.

关 键 词：zigzag graphene nanoribbons nitrogen-boron-nitrogen(NBN)dopant edge states scanning tunneling microscopy(STM) non-contact atomic force microscopy(nc-AFM) density functional theory(DFT)calculations 

分 类 号：O61[理学—无机化学]