Chiral Self-Assembly of Nonplanar 10,10 '-Dibromo-9,9 '-bianthryl Molecules on Ag(111)

doi:10.1021/acs.langmuir.7b00218

CAS OpenIR > 中科院上海应用物理研究所2011-2020年

	Chiral Self-Assembly of Nonplanar 10,10 '-Dibromo-9,9 '-bianthryl Molecules on Ag(111)
	Shen, YX; Tian, G; Huang, H; He, YW; Xie, QL; Song, F; Lu, YH; Wang, PS; Gao, YL
	2017
Source Publication	LANGMUIR
ISSN	0743-7463
Volume	33 Issue:12 Pages:2993-2999
Subtype	期刊论文
Abstract	We report on the low-temperature scanning tunneling microscopy (STM) measurements of the self-assembly of nonplanar 10,10'-dibromo-9,9'bianthryl (DBBA) molecules on Ag(111) combined with density functional theory (DFT) calculations. DBBA molecules have two enantiomorphous adsorption configurations, from which more chiral structures can be formed. At a low coverage [0.4 monolayer (ML)], DBBA forms racemic netlike islands consisting of molecular chains along <<12(3)over bar>>(Ag). Moreover, the gliding between the molecular chains gives rise to chiral windmill-like patterns in the islands. At 0.8 ML, DBBA forms a racemic row phase and a homochiral hexamer phase. The molecular appearance difference between the two coexisted phases and the DFT calculated molecular adsorption configuration reveal a decrease in the molecular dihedral angle of DBBA, which implies an enhancement in the intermolecular interactions-via CH...pi and halogen bonds. The transition from a racemic packing mode to a homochiral one suggests that the suitability of steric configurations is dominant in the close-packing mode under enhanced intermolecular interactions.
DOI	10.1021/acs.langmuir.7b00218
Indexed By	SCI
Language	英语
WOS ID	WOS:000398014700006
Citation statistics
Document Type	期刊论文
Identifier	http://ir.sinap.ac.cn/handle/331007/27273
Collection	中科院上海应用物理研究所2011-2020年
Recommended Citation GB/T 7714	Shen, YX,Tian, G,Huang, H,et al. Chiral Self-Assembly of Nonplanar 10,10 '-Dibromo-9,9 '-bianthryl Molecules on Ag(111)[J]. LANGMUIR,2017,33(12):2993-2999.
APA	Shen, YX.,Tian, G.,Huang, H.,He, YW.,Xie, QL.,...&Gao, YL.(2017).Chiral Self-Assembly of Nonplanar 10,10 '-Dibromo-9,9 '-bianthryl Molecules on Ag(111).LANGMUIR,33(12),2993-2999.
MLA	Shen, YX,et al."Chiral Self-Assembly of Nonplanar 10,10 '-Dibromo-9,9 '-bianthryl Molecules on Ag(111)".LANGMUIR 33.12(2017):2993-2999.

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