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题名:
Chiral Self-Assembly of Nonplanar 10,10 '-Dibromo-9,9 '-bianthryl Molecules on Ag(111)
作者: Shen, YX; Tian, G; Huang, H; He, YW; Xie, QL; Song, F; Lu, YH; Wang, PS; Gao, YL
刊名: LANGMUIR
出版日期: 2017
卷号: 33, 期号:12, 页码:2993-2999
DOI: 10.1021/acs.langmuir.7b00218
文章类型: 期刊论文
英文摘要: 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.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000398014700006
ISSN号: 0743-7463
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/27273
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
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,2017-01-01,33(12):2993-2999.
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