Role of a Carboxyl Group in the Adsorption of Zn Porphyrins on TiO2(011)-2脳1 Surface

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• 作者：Piotr Olszowski ; 艁ukasz Zaj膮c ; Szymon Godlewski ; Bartosz Such ; Res J枚hr ; Thilo Glatzel ; Ernst Meyer ; Marek Szymonski
• 刊名：Journal of Physical Chemistry C
• 出版年：2015
• 出版时间：September 17, 2015
• 年：2015
• 卷：119
• 期：37
• 页码：21561-21566
• 全文大小：554K
• ISSN：1932-7455

文摘

Adsorption of carboxylic-substituted Zn porphyrin molecules (COOH-ZnTPP) on the (011) surface of rutile TiO₂ is examined by scanning tunneling microscopy at room temperature. The molecules are either flat, stabilized by the surface defects, or mobile with their movement limited to a reconstruction row of the substrate. Upon increasing the molecular coverage the molecules form 1D structures along the [1鈥?0] direction, in which molecular boards are no longer parallel to the surface. This behavior is contrasted with the structures formed by Zn-TPP lacking the carboxylic group, which remain flat up to a monolayer coverage.