Two-Dimensional Organization of Mono- and Bisurea Supramolecular Polymers Studied by Scanning Tunneling Microscopy

被引：6

作者：

Kikkawa, Yoshihiro ^{[1
]}

Kubota, Shun ^{[2
]}

Karatsu, Takashi ^{[2
]}

Kitamura, Akihide ^{[2
]}

Kanesato, Masatoshi ^{[1
]}

Yagai, Shiki ^{[2
,3
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Photon Res Inst, Tsukuba, Ibaraki 3058562, Japan

[2] Chiba Univ, Dept Appl Chem & Biotechnol, Grad Sch Engn, Inage Ku, Chiba 2638522, Japan

[3] Japan Sci & Technol Agcy, PRESTO, Kawaguchi, Saitama 3320012, Japan

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2010年 / 10卷 / 02期

关键词：

Hydrogen-Bonding; Urea; p-Phenylenevinylene; Supramolecular Polymer; Scanning Tunneling Microscopy; LIQUID/SOLID INTERFACE; THIOPHENE DERIVATIVES; MOLECULAR RECOGNITION; ACHIRAL MOLECULES; UREA; ORGANOGELS; NANOWIRES; GRAPHITE; DIMERS; CHAINS;

D O I：

10.1166/jnn.2010.1881

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Scanning tunneling microscopy (STM) of mono- and bisurea-functionalized oligo(p-phenylenevinylene)s at solid/liquid interface visualized two-dimensionally-ordered double columnar structures of pi-conjugated segments scaffolded by one-dimensional supramolecular polymerization of urea hydrogen-bonding units. In contrast to a persistent alignment of the bisurea compound supported by twofold intermolecular urea-urea hydrogen-bonding, the building blocks in the monourea double columns shows dynamic fluctuation and defects because of their rotational motion around urea-urea hydrogen-bonding axis and/or adsorption-desorption of the individual molecules from the surface. Self-assembled structures of mono- and bisurea compounds at solid/liquid interface revealed by STM can be related to their gelation abilities in organic solvents.

引用

页码：803 / 808

页数：6

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