Polymorphism in Self-Assembled Structures of 9-Anthracene Carboxylic Acid on Ag(111)

被引：8

作者：

Lu, Chao ^{[1
]}

Wei, Yinying ^{[2
]}

Zhu, Erkuang ^{[1
]}

Reutt-Robey, Janice E. ^{[2
]}

Xu, Bo ^{[1
]}

机构：

[1] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China

[2] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA

来源：

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES | 2012年 / 13卷 / 06期

基金：

美国国家科学基金会;

关键词：

self-assembly; nanostructures; polymorphism; scanning tunneling microscopy; ELECTRONIC-PROPERTIES; ORGANIC-MOLECULES; AU(111) SURFACE; METAL-SURFACES; AG; NANOSTRUCTURES; DISLOCATIONS; ORGANIZATION; ARCHITECTURE; MONOLAYERS;

D O I：

10.3390/ijms13066836

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Surface self-assembly process of 9-anthracene carboxylic acid (AnCA) on Ag(111) was investigated using STM. Depending on the molecular surface density, four spontaneously formed and one annealed AnCA ordered phases were observed, namely a straight belt phase, a zigzag double-belt phase, two simpler dimer phases, and a kagome phase. The two high-density belt phases possess large unit cells on the scale length of 10 nm, which are seldom observed in molecular self-assembled structures. This structural diversity stems from a complicated competition of different interactions of AnCA molecules on metal surface, including intermolecular and molecular-substrate interactions, as well as the steric demand from high molecular surface density.

引用

页码：6836 / 6848

页数：13

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