Switchable Self-Assembly of a Bioinspired Alkyl Catechol at a Solid/Liquid Interface: Competitive Interfacial, Noncovalent, and Solvent Interactions

被引：29
|
作者：
Saiz-Poseu, Javier [2 ,3 ]
Faraudo, Jordi [4 ]
Figueras, Antoni [1 ]
Alibes, Ramon [1 ]
Busque, Felix [1 ]
Ruiz-Molina, Daniel [2 ]
机构：
[1] Univ Autonoma Barcelona, Dept Quim, E-08193 Barcelona, Spain
[2] Esfera UAB, Ctr Invest Nanociencia & Nanotecnol ICN CSIC, Barcelona 08193, Spain
[3] Fdn Privada ASCAMM, Unidad Nanotecnol NANOMM, Barcelona 2308290, Spain
[4] Inst Ciencia Mat Barcelona ICMAB CSIC, Barcelona 08193, Spain
来源：
CHEMISTRY-A EUROPEAN JOURNAL | 2012年 / 18卷 / 10期
关键词：
catechol; molecular dynamics; self-assembly; scanning tunneling microscopy; switchable materials; SCANNING-TUNNELING-MICROSCOPY; MOLECULAR-DYNAMICS; SURFACE; AU(111); COORDINATION; MONOLAYERS; ADHESION; ACID; STM; ORGANIZATION;
D O I：
10.1002/chem.201101940
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The large tendency of catechol rings to adsorb on surfaces has been studied by STM experiments with molecular resolution combined with molecular-dynamics simulations. The strong adhesion is due to interactions with the surface and solvent effects. Moreover, the thermodynamic control over the differential adsorption of 1 and the nonanoic solvent molecules has been used to induce a new temperature-induced switchable interconversion. Two different phases that differ in their crystal packing and the presence of solvent molecules coexist upon an increase or decrease in the temperature. These results open new insight into the behavior of catechol molecules on surfaces and 2D molecular suprastructures.
引用
收藏
页码：3056 / 3063
页数：8
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