Molecular Growth Determined by Surface Domain Patterns

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• 作者：John &Aring ; hlund ; Katharina Nilson ; P&aring ; l Palmgren ; Emmanuelle G&ouml ; thelid ; Joachim Schiessling ; Mats G&ouml ; thelid ; Nils M&aring ; rtensson ; Carla Puglia
• 刊名：Journal of Physical Chemistry C
• 出版年：2008
• 出版时间：May 1, 2008
• 年：2008
• 卷：112
• 期：17
• 页码：6887 - 6890
• 全文大小：957K
• 年卷期：v.112,no.17(May 1, 2008)
• ISSN：1932-7455

文摘

The growth of iron phthalocyanine (FePc) on InSb(001) c(8 × 2) at submonolayer coverage has beeninvestigated with scanning tunneling microscopy (STM). FePc adsorbs flat centered on the In rows both at70 K and at room temperature (RT). However, the shapes of the two-dimensional molecular islands arefundamentally different; while the RT growth results in chainlike structures along the [110] direction, asalready observed for other Pc's adsorbed on the same surface, the islands are prolonged along [ges/entities/onemacr.gif">10], i.e.,perpendicular to the substrate rows, at 70 K. These observations are explained on the basis of a recentlyobserved new surface phase at low temperature, resulting in structural domains on the surface. The moleculargrowth front follows the propagating domain boundary that freezes at low temperature.