PMID- 12895101
OWN - NLM
STAT- MEDLINE
DCOM- 20040302
LR  - 20131121
IS  - 0020-1669 (Print)
IS  - 0020-1669 (Linking)
VI  - 42
IP  - 16
DP  - 2003 Aug 11
TI  - Effect of electron availability on selectivity of O2 reduction by synthetic 
      monometallic Fe porphyrins.
PG  - 4807-9
AB  - Herein we report that biomimetic analogues of cytochrome c oxidase (CcO) couple 
      reduction of O(2) to oxidation of a single-electron carrier, Ru(NH(3))(6)(2+), 
      under steady-state catalytic turnover. Higher Ru(II) concentrations favor the 
      4-electron vs 2-electron O(2) reduction pathway. Our data indicate that the 
      capacity of electrode-adsorbed Fe-only porphyrins to catalyze reduction of O(2) 
      to H(2)O is due to high availability of electrons and is eliminated under the 
      biologically relevant slow electron delivery.
FAU - Collman, James P
AU  - Collman JP
AD  - Department of Chemistry, Stanford University, Stanford, California 94305, USA. 
      jpc@stanford.edu
FAU - Shiryaeva, Irina M
AU  - Shiryaeva IM
FAU - Boulatov, Roman
AU  - Boulatov R
LA  - eng
GR  - NIH17880/PHS HHS/United States
PT  - Journal Article
PT  - Research Support, U.S. Gov't, Non-P.H.S.
PT  - Research Support, U.S. Gov't, P.H.S.
PL  - United States
TA  - Inorg Chem
JT  - Inorganic chemistry
JID - 0366543
RN  - 0 (Fluorocarbon Polymers)
RN  - 0 (Indicators and Reagents)
RN  - 0 (Porphyrins)
RN  - 39464-59-0 (perfluorosulfonic acid)
RN  - E1UOL152H7 (Iron)
RN  - EC 1.9.3.1 (Electron Transport Complex IV)
RN  - S88TT14065 (Oxygen)
SB  - IM
MH  - Catalysis
MH  - Electrochemistry
MH  - Electron Transport Complex IV/*chemistry
MH  - Electrons
MH  - Fluorocarbon Polymers
MH  - Indicators and Reagents
MH  - Iron/*chemistry
MH  - Molecular Mimicry
MH  - Oxidation-Reduction
MH  - Oxygen/*chemistry
MH  - Porphyrins/*chemistry
EDAT- 2003/08/05 05:00
MHDA- 2004/03/03 05:00
CRDT- 2003/08/05 05:00
PHST- 2003/08/05 05:00 [pubmed]
PHST- 2004/03/03 05:00 [medline]
PHST- 2003/08/05 05:00 [entrez]
AID - 10.1021/ic034488r [doi]
PST - ppublish
SO  - Inorg Chem. 2003 Aug 11;42(16):4807-9. doi: 10.1021/ic034488r.