Phase transition in ordered porphyrin layers on iodide modified Cu(111): An EGSTM study

SURFACE SCIENCE

卷:601

Article; Proceedings Paper

Hai, N. T. M. ; Gasparovic, B. ; Wandelt, K. ; Broekmann, P.

关键词: self-assembly;    porphyrins;    solid-liquid interface;    copper;    scanning tunneling microscopy;   

DOI  :  10.1016/j.susc.2007.05.035

来源: Elsevier

【 摘 要 】

The self-assembly of meso-tetra (N-methyl-4-pyridyl) porphyrine tetratosylat (H2TMPyP) on an iodide modified Cu(111) surface has been studied by means of in situ electrochemical-scanning tunneling microscopy (EC-STM). The I/Cu(111) surface was found to be a good substrate for the self-assembly of highly ordered layers of porphyrin cations. Furthermore, a reversible structural phase transition within the highly ordered porphyrin layer was observed during variation of the electrode potential, as a consequence of changing electronic properties of the substrate. (C) 2007 Published by Elsevier B.V.

【 授权许可】

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