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Issue 29, 2013
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Assisted deprotonation of formic acid on Cu(111) and self-assembly of 1D chains

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Abstract

Formic acid (HCOOH) deprotonates on the open surfaces of Cu(110) and Cu(100) when exposed at 300 K. However, this does not occur on the close-packed surface of clean Cu(111). In this study, we show that the deprotonation of formic acid on atomically flat Cu(111) surfaces can be induced by pre-adsorbing polymeric formic acid clusters at low temperatures, and then annealing the system to break the acidic O–H bond of HCOOH adsorbed on the edges of the polymeric clusters. The thermal activation of HCOOH to bidentate formate was studied using a combination of infrared reflection absorption spectroscopy, scanning tunneling microscopy, X-ray photoelectron spectroscopy, and near edge X-ray absorption fine structure spectroscopy. Extended 1D formate structures self-assemble due to a templating effect introduced by the formation of long α-polymeric formic acid chains commensurate with the substrate.

Graphical abstract: Assisted deprotonation of formic acid on Cu(111) and self-assembly of 1D chains

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Publication details

The article was received on 10 Apr 2013, accepted on 22 May 2013 and first published on 23 May 2013


Article type: Paper
DOI: 10.1039/C3CP51533H
Phys. Chem. Chem. Phys., 2013,15, 12291-12298

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    Assisted deprotonation of formic acid on Cu(111) and self-assembly of 1D chains

    A. E. Baber, K. Mudiyanselage, S. D. Senanayake, A. Beatriz-Vidal, K. A. Luck, E. C. H. Sykes, P. Liu, J. A. Rodriguez and D. J. Stacchiola, Phys. Chem. Chem. Phys., 2013, 15, 12291
    DOI: 10.1039/C3CP51533H

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