Molecular Architecture of Oligothiophene on a Highly Oriented Pyrolytic Graphite Surface by Employing Hydrogen Bondings
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- 作者：Li-Ping Xu ; Jian-Ru Gong ; Li-Jun Wan ; Tong-Gang Jiu ; Yu-Liang Li ; Dao-Ben Zhu ; Ke Deng
- 刊名：Journal of Physical Chemistry B
- 出版年：2006
- 出版时间：August 31, 2006
- 年：2006
- 卷：110
- 期：34
- 页码：17043 - 17049
- 全文大小：1176K
- 年卷期：v.110,no.34(August 31, 2006)
- ISSN：1520-5207
文摘
To achieve a controllable and predictable molecular architecture on a two-dimensional (2D) surface, a seriesof oligothiophenes with carboxylic groups and alkane chains were synthesized. The alkane chains and carboxylicgroups, which can form hydrogen bonding, were intentionally designed in different positions of theoligothiophenes. The resulted molecular architectures by using the so-prepared oligothiophenes on a highlyoriented pyrolytic graphite (HOPG) surface were investigated by scanning tunneling microscopy (STM) anddensity functional theory (DFT). It is found that the hydrogen bonding plays an essential role in the formationof the ordered assemblies. A controlled 2D molecular assembly could be fabricated by using hydrogen bondings.