Following the Metalation Process of Protoporphyrin IX with Metal Substrate Atoms at Room Temperature

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• 作者：Rube虂n Gonza虂lez-Moreno ; Carlos Sa虂nchez-Sa虂nchez ; Marta Trelka ; Roberto Otero ; Albano Cossaro ; Alberto Verdini ; Luca Floreano ; Marta Ruiz-Bermejo ; Aran Garci虂a-Lekue ; Jose虂 A虂ngel Marti虂n-Gago ; Celia Rogero
• 刊名：Journal of Physical Chemistry C
• 出版年：2011
• 出版时间：April 14, 2011
• 年：2011
• 卷：115
• 期：14
• 页码：6849-6854
• 全文大小：924K
• 年卷期：v.115,no.14(April 14, 2011)
• ISSN：1932-7455

文摘

We have studied the in situ coordination reaction of porphyrin molecules, particularly protoporphyrin IX (H2PPIX), with copper substrate atoms in ultrahigh vacuum conditions with a combination of X-ray photoelectron spectroscopy and scanning tunneling microscopy. We show that these protoporphyrin IX molecules deposited on Cu surfaces, as Cu(110) and Cu(100), form metalloprotoporphyrin IX (CuPPIX) by incorporation of Cu atoms from the surface already at room temperature. We have followed this reaction as a function of temperature and we have determined intermediate situations at lower temperatures where the physisorbed macrocycle rings present a tendency to establish hydrogen bonding between molecules.