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@ARTICLE{Mourzina:888497,
      author       = {Mourzina, Youlia and Offenhäusser, Andreas},
      title        = {{E}lectrochemical properties and biomimetic activity of
                      water-soluble meso-substituted {M}n({III}) porphyrin
                      complexes in the electrocatalytic reduction of hydrogen
                      peroxide},
      journal      = {Journal of electroanalytical chemistry},
      volume       = {866},
      issn         = {1572-6657},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2020-04961},
      pages        = {114159 -},
      year         = {2020},
      abstract     = {The aim of this study was to investigate biomimetic
                      activity of water-soluble manganese porphyrin complexes with
                      a series of meso-substituents of the porphyrin macrocycle in
                      the electrocatalytic reduction of hydrogen peroxide in
                      aqueous solutions and to obtain information on possible
                      intermediates, processes, and mechanisms. Mn porphyrins were
                      compared in the process of the electrocatalytic reduction of
                      hydrogen peroxide at pH 4, 7.4, and 10 in the deoxygenated
                      solutions and in the presence of oxygen. The highest
                      sensitivity, defined as the reduction current increase in
                      relation to the concentration of hydrogen peroxide, was
                      found in the case of Mn(III) meso-tetra(N-methyl-4-pyridyl)
                      porphyrin, MnTMPyP, in alkaline 2.9·10−2 A M−1 and
                      acidic 1.6·10−2 A M−1 solutions in the presence of
                      oxygen. The reduction currents at pH 7.4, 10, and 4 in the
                      presence of H2O2 were about 4, 7, and 12 times higher,
                      respectively, in the solutions with the MnTMPyP complex than
                      those at a GCE without a porphyrin complex in the solution.
                      The electrocatalytic reduction of hydrogen peroxide occurs
                      in parallel with an oxidative degradation of the porphyrin
                      catalyst depending on the conditions of the experiment and
                      was most significant in the presence of oxygen. The effect
                      of the functional substituents at the meso-positions of a
                      porphyrin ligand on the electrocatalytic activity of the
                      water-soluble Mn(III) porphyrins complexes is discussed and
                      reaction mechanisms are proposed.},
      cin          = {IBI-3},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IBI-3-20200312},
      pnm          = {523 - Controlling Configuration-Based Phenomena (POF3-523)},
      pid          = {G:(DE-HGF)POF3-523},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000534394000006},
      doi          = {10.1016/j.jelechem.2020.114159},
      url          = {https://juser.fz-juelich.de/record/888497},
}