Effects of monolayer Bi on the self-assembly of DBBA on Au(111)

doi:10.1016/j.susc.2017.08.008

CAS OpenIR > 中科院上海应用物理研究所2011-2018年

	Effects of monolayer Bi on the self-assembly of DBBA on Au(111)
	Tian, G; Shen, YX; He, BC; Yu, ZQ; Song, F; Lu, YH; Wang, PS; Gao, YL; Huang, H
	2017
Source Publication	SURFACE SCIENCE
ISSN	0039-6028
Volume	665 Issue:-Pages:89-95
Subtype	期刊论文
Abstract	The initial growth behaviors of nonplanar 10,10'-dibromo-9,9'-bianthryl (DBBA) molecules on the Au(111) substrates, which is either pristine or Bi-3 x root 3-Au(111), at low deposition rates have been systematically investigated using low temperature scanning tunneling microscopy (LT-STM) and density functional theories (DFT) calculations. The effects of such substrates on the subsequent graphene nanoribbons (GNRs) formation are addressed. On clean Au(111), DBBA molecules self-assemble into highly ordered commensurate single-molecule chains along <11<(2)over bar>>(Au) at a coverage of 0.8 monolayer (ML), and collectively transit into long-range ordered commensurate double-molecule chains along <1<(1)over bar>0>(Au) but with many single-molecule vacancies at a coverage of 1.2 ML, revealing the delicate competing between intermolecular interactions and molecule-substrate interfacial interactions. The interfacial interactions are further tuned by introducing bismuth to form a Bi-3 x root 3-Au(111)surface, where DBBA molecules self-assemble into an unique hexamer phase due to the enhanced intermolecular interactions via C-H center dot center dot center dot pi and halogen bonds. DFT calculations confirm the proposed molecular configuration change of single DBBA molecule when adsorbed on different substrates. The calculated difference in C-Br bond gives further insight into why no GNRs formed on Bi-3 x root 3-Au(111). (C) 2017 Elsevier B.V. All rights reserved.
Keyword	Atomic-force Microscopy Bottom-up Fabrication Graphene Nanoribbons Photovoltaic Cell Surface Films Spectroscopy Interfaces 10 Deposition 10'-dibromo-9 9'-bianthryl
DOI	10.1016/j.susc.2017.08.008
WOS Keyword	ATOMIC-FORCE MICROSCOPY ; BOTTOM-UP FABRICATION ; GRAPHENE NANORIBBONS ; PHOTOVOLTAIC CELL ; SURFACE ; FILMS ; SPECTROSCOPY ; 10,10'-DIBROMO-9,9'-BIANTHRYL ; INTERFACES ; DEPOSITION
Indexed By	SCI
Language	英语
WOS ID	WOS:000412958700012
Citation statistics	Cited Times:6[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.sinap.ac.cn/handle/331007/28634
Collection	中科院上海应用物理研究所2011-2018年
Recommended Citation GB/T 7714	Tian, G,Shen, YX,He, BC,et al. Effects of monolayer Bi on the self-assembly of DBBA on Au(111)[J]. SURFACE SCIENCE,2017,665(-):89-95.
APA	Tian, G.,Shen, YX.,He, BC.,Yu, ZQ.,Song, F.,...&Huang, H.(2017).Effects of monolayer Bi on the self-assembly of DBBA on Au(111).SURFACE SCIENCE,665(-),89-95.
MLA	Tian, G,et al."Effects of monolayer Bi on the self-assembly of DBBA on Au(111)".SURFACE SCIENCE 665.-(2017):89-95.

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