In Situ XANES of an Iron Porphyrin Irreversibly Adsorbed on an Electrode Surface

Sunghyun Kim, Marnita Sandifer, Daniel Alberto Scherson, In Tae Bae, Mark R. Antonio, Philip N. Ross, Roger Carr, Joseph Woicik

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

In situ iron K-edge X-ray absorption near edge structure, XANES, has been employed to examine the axial coordination of (µ-OXO)bis [iron meso-tetrakis(4-methoxyphenyl)porphyrin] (FeTMPP) 2 O, irreversibly adsorbed on a high area carbon substrate, Black Pearl (BP), as a function of applied potential. Analysis of the XANES provides conclusive evidence that the coordination about Fe 3+ in the supported, fully oxidized macrocycle is remarkably different from that about Fe 2+ in the corresponding fully reduced macrocycle. In the adsorbed, oxidized state, (FeTMPP) 2 O retains its µ-OXO character and it undergoes a two-electron reduction to yield predominantly four-coordinate square-planar FeTMPP without axial ligation.

Original languageEnglish
Pages (from-to)9063-9066
Number of pages4
JournalJournal of the American Chemical Society
Volume113
Issue number24
DOIs
Publication statusPublished - 1991 Nov 1
Externally publishedYes

Fingerprint

Porphyrins
Electrodes
Iron
Soot
X ray absorption
Ligation
Carbon
X-Rays
Electrons
Substrates
methoxyphenyl porphyrin

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

Cite this

Kim, S., Sandifer, M., Scherson, D. A., Bae, I. T., Antonio, M. R., Ross, P. N., ... Woicik, J. (1991). In Situ XANES of an Iron Porphyrin Irreversibly Adsorbed on an Electrode Surface. Journal of the American Chemical Society, 113(24), 9063-9066. https://doi.org/10.1021/ja00024a006

In Situ XANES of an Iron Porphyrin Irreversibly Adsorbed on an Electrode Surface. / Kim, Sunghyun; Sandifer, Marnita; Scherson, Daniel Alberto; Bae, In Tae; Antonio, Mark R.; Ross, Philip N.; Carr, Roger; Woicik, Joseph.

In: Journal of the American Chemical Society, Vol. 113, No. 24, 01.11.1991, p. 9063-9066.

Research output: Contribution to journalArticle

Kim, S, Sandifer, M, Scherson, DA, Bae, IT, Antonio, MR, Ross, PN, Carr, R & Woicik, J 1991, 'In Situ XANES of an Iron Porphyrin Irreversibly Adsorbed on an Electrode Surface', Journal of the American Chemical Society, vol. 113, no. 24, pp. 9063-9066. https://doi.org/10.1021/ja00024a006
Kim, Sunghyun ; Sandifer, Marnita ; Scherson, Daniel Alberto ; Bae, In Tae ; Antonio, Mark R. ; Ross, Philip N. ; Carr, Roger ; Woicik, Joseph. / In Situ XANES of an Iron Porphyrin Irreversibly Adsorbed on an Electrode Surface. In: Journal of the American Chemical Society. 1991 ; Vol. 113, No. 24. pp. 9063-9066.
@article{6a48a34aeff24d1184730025cafd19bf,
title = "In Situ XANES of an Iron Porphyrin Irreversibly Adsorbed on an Electrode Surface",
abstract = "In situ iron K-edge X-ray absorption near edge structure, XANES, has been employed to examine the axial coordination of (µ-OXO)bis [iron meso-tetrakis(4-methoxyphenyl)porphyrin] (FeTMPP) 2 O, irreversibly adsorbed on a high area carbon substrate, Black Pearl (BP), as a function of applied potential. Analysis of the XANES provides conclusive evidence that the coordination about Fe 3+ in the supported, fully oxidized macrocycle is remarkably different from that about Fe 2+ in the corresponding fully reduced macrocycle. In the adsorbed, oxidized state, (FeTMPP) 2 O retains its µ-OXO character and it undergoes a two-electron reduction to yield predominantly four-coordinate square-planar FeTMPP without axial ligation.",
author = "Sunghyun Kim and Marnita Sandifer and Scherson, {Daniel Alberto} and Bae, {In Tae} and Antonio, {Mark R.} and Ross, {Philip N.} and Roger Carr and Joseph Woicik",
year = "1991",
month = "11",
day = "1",
doi = "10.1021/ja00024a006",
language = "English",
volume = "113",
pages = "9063--9066",
journal = "Journal of the American Chemical Society",
issn = "0002-7863",
publisher = "American Chemical Society",
number = "24",

}

TY - JOUR

T1 - In Situ XANES of an Iron Porphyrin Irreversibly Adsorbed on an Electrode Surface

AU - Kim, Sunghyun

AU - Sandifer, Marnita

AU - Scherson, Daniel Alberto

AU - Bae, In Tae

AU - Antonio, Mark R.

AU - Ross, Philip N.

AU - Carr, Roger

AU - Woicik, Joseph

PY - 1991/11/1

Y1 - 1991/11/1

N2 - In situ iron K-edge X-ray absorption near edge structure, XANES, has been employed to examine the axial coordination of (µ-OXO)bis [iron meso-tetrakis(4-methoxyphenyl)porphyrin] (FeTMPP) 2 O, irreversibly adsorbed on a high area carbon substrate, Black Pearl (BP), as a function of applied potential. Analysis of the XANES provides conclusive evidence that the coordination about Fe 3+ in the supported, fully oxidized macrocycle is remarkably different from that about Fe 2+ in the corresponding fully reduced macrocycle. In the adsorbed, oxidized state, (FeTMPP) 2 O retains its µ-OXO character and it undergoes a two-electron reduction to yield predominantly four-coordinate square-planar FeTMPP without axial ligation.

AB - In situ iron K-edge X-ray absorption near edge structure, XANES, has been employed to examine the axial coordination of (µ-OXO)bis [iron meso-tetrakis(4-methoxyphenyl)porphyrin] (FeTMPP) 2 O, irreversibly adsorbed on a high area carbon substrate, Black Pearl (BP), as a function of applied potential. Analysis of the XANES provides conclusive evidence that the coordination about Fe 3+ in the supported, fully oxidized macrocycle is remarkably different from that about Fe 2+ in the corresponding fully reduced macrocycle. In the adsorbed, oxidized state, (FeTMPP) 2 O retains its µ-OXO character and it undergoes a two-electron reduction to yield predominantly four-coordinate square-planar FeTMPP without axial ligation.

UR - http://www.scopus.com/inward/record.url?scp=0000873251&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000873251&partnerID=8YFLogxK

U2 - 10.1021/ja00024a006

DO - 10.1021/ja00024a006

M3 - Article

AN - SCOPUS:0000873251

VL - 113

SP - 9063

EP - 9066

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

SN - 0002-7863

IS - 24

ER -