Scanning Tunneling Microscopy Measurements of the Full Cycle of a Heterogeneous Asymmetric Hydrogenation Reaction on Chirally Modified Pt(111)

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Scanning Tunneling Microscopy Measurements of the Full Cycle of a Heterogeneous Asymmetric Hydrogenation Reaction on Chirally Modified Pt(111). / Demers-Carpentier, Vincent; Goubert, Guillaume ; Masini, Federico; Dong, Yi; Rasmussen, Anton Michael Havelund; Hammer, Bjørk; McBreen, Peter H. .

In: The Journal of Physical Chemistry Letters, Vol. 3, No. 92, 2012, p. 92–96.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Harvard

Demers-Carpentier, V, Goubert, G, Masini, F, Dong, Y, Rasmussen, AMH, Hammer, B & McBreen, PH 2012, 'Scanning Tunneling Microscopy Measurements of the Full Cycle of a Heterogeneous Asymmetric Hydrogenation Reaction on Chirally Modified Pt(111)', The Journal of Physical Chemistry Letters, vol. 3, no. 92, pp. 92–96. https://doi.org/10.1021/jz2013853

APA

Demers-Carpentier, V., Goubert, G., Masini, F., Dong, Y., Rasmussen, A. M. H., Hammer, B., & McBreen, P. H. (2012). Scanning Tunneling Microscopy Measurements of the Full Cycle of a Heterogeneous Asymmetric Hydrogenation Reaction on Chirally Modified Pt(111). The Journal of Physical Chemistry Letters, 3(92), 92–96. https://doi.org/10.1021/jz2013853

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Demers-Carpentier, Vincent ; Goubert, Guillaume ; Masini, Federico ; Dong, Yi ; Rasmussen, Anton Michael Havelund ; Hammer, Bjørk ; McBreen, Peter H. . / Scanning Tunneling Microscopy Measurements of the Full Cycle of a Heterogeneous Asymmetric Hydrogenation Reaction on Chirally Modified Pt(111). In: The Journal of Physical Chemistry Letters. 2012 ; Vol. 3, No. 92. pp. 92–96.

Bibtex

@article{fe529cb889fc4977a1b27efe760476e5,
title = "Scanning Tunneling Microscopy Measurements of the Full Cycle of a Heterogeneous Asymmetric Hydrogenation Reaction on Chirally Modified Pt(111)",
abstract = "The hydrogenation of a prochiral substrate, 2,2,2-trifluoroacetophenone (TFAP), on Pt(111) was studied using room-temperature scanning tunneling microscopy (STM) measurements. The experiments were carried out both on a clean surface and on a chirally modified surface, using chemisorbed (R)-(+)-1-(1-naphthyl)ethylamine, ((R)-NEA), as the modifier. On the nonmodified surface, introduction of H2 at a background pressure of ∼1 × 10–6 mbar leads to the rapid break-up of TFAP dimer structures followed by the gradual removal of all TFAP-related images. During the latter step, some monomers display an extra protrusion compared to TFAP in dimer structures. They are attributed to a half-hydrogenated intermediate. The introduction of H2 to a mixture of (R)-NEA and TFAP on Pt(111) leads to the removal of TFAP without any change in the population of the modifier, as required for an efficient chirally modified catalyst.",
author = "Vincent Demers-Carpentier and Guillaume Goubert and Federico Masini and Yi Dong and Rasmussen, {Anton Michael Havelund} and Bj{\o}rk Hammer and McBreen, {Peter H.}",
year = "2012",
doi = "10.1021/jz2013853",
language = "English",
volume = "3",
pages = "92–96",
journal = "The Journal of Physical Chemistry Letters",
issn = "1948-7185",
publisher = "American Chemical Society",
number = "92",

}

RIS

TY - JOUR

T1 - Scanning Tunneling Microscopy Measurements of the Full Cycle of a Heterogeneous Asymmetric Hydrogenation Reaction on Chirally Modified Pt(111)

AU - Demers-Carpentier, Vincent

AU - Goubert, Guillaume

AU - Masini, Federico

AU - Dong, Yi

AU - Rasmussen, Anton Michael Havelund

AU - Hammer, Bjørk

AU - McBreen, Peter H.

PY - 2012

Y1 - 2012

N2 - The hydrogenation of a prochiral substrate, 2,2,2-trifluoroacetophenone (TFAP), on Pt(111) was studied using room-temperature scanning tunneling microscopy (STM) measurements. The experiments were carried out both on a clean surface and on a chirally modified surface, using chemisorbed (R)-(+)-1-(1-naphthyl)ethylamine, ((R)-NEA), as the modifier. On the nonmodified surface, introduction of H2 at a background pressure of ∼1 × 10–6 mbar leads to the rapid break-up of TFAP dimer structures followed by the gradual removal of all TFAP-related images. During the latter step, some monomers display an extra protrusion compared to TFAP in dimer structures. They are attributed to a half-hydrogenated intermediate. The introduction of H2 to a mixture of (R)-NEA and TFAP on Pt(111) leads to the removal of TFAP without any change in the population of the modifier, as required for an efficient chirally modified catalyst.

AB - The hydrogenation of a prochiral substrate, 2,2,2-trifluoroacetophenone (TFAP), on Pt(111) was studied using room-temperature scanning tunneling microscopy (STM) measurements. The experiments were carried out both on a clean surface and on a chirally modified surface, using chemisorbed (R)-(+)-1-(1-naphthyl)ethylamine, ((R)-NEA), as the modifier. On the nonmodified surface, introduction of H2 at a background pressure of ∼1 × 10–6 mbar leads to the rapid break-up of TFAP dimer structures followed by the gradual removal of all TFAP-related images. During the latter step, some monomers display an extra protrusion compared to TFAP in dimer structures. They are attributed to a half-hydrogenated intermediate. The introduction of H2 to a mixture of (R)-NEA and TFAP on Pt(111) leads to the removal of TFAP without any change in the population of the modifier, as required for an efficient chirally modified catalyst.

U2 - 10.1021/jz2013853

DO - 10.1021/jz2013853

M3 - Journal article

C2 - 26701743

VL - 3

SP - 92

EP - 96

JO - The Journal of Physical Chemistry Letters

JF - The Journal of Physical Chemistry Letters

SN - 1948-7185

IS - 92

ER -