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@ARTICLE{Ermolenko:912398,
      author       = {Ermolenko, Yuri E. and Offenhäusser, Andreas and Mourzina,
                      Youlia},
      title        = {{S}ynthesizing {E}lectrodes {I}nto {E}lectrochemical
                      {S}ensor {S}ystems},
      journal      = {Frontiers in Chemistry},
      volume       = {9},
      issn         = {2296-2646},
      address      = {Lausanne},
      publisher    = {Frontiers Media},
      reportid     = {FZJ-2022-05583},
      pages        = {641674},
      year         = {2021},
      abstract     = {Electrochemical sensors that can determine single/multiple
                      analytes remain a key challenge in miniaturized analytical
                      systems and devices. In this study, we present in situ
                      synthesis and modification of gold nanodendrite electrodes
                      to create an electrochemical system for the analysis of
                      hydrogen peroxide. The sensor system consisted of the
                      reference and counter electrodes as well as the working
                      electrode. Electrochemical reduction of graphene oxide,
                      ErGO, on the thin-film gold and gold nanodendrite working
                      electrodes was used to achieve an efficient sensor interface
                      for the adsorption of a biomimetic electrocatalytic sensor
                      material, Mn(III) meso-tetra(N-methyl-4-pyridyl) porphyrin
                      complex, with as high as 10–10 mol cm−2 surface
                      coverage. The sensor system demonstrated a detection limit
                      of 0.3 µM H2O2 in the presence of oxygen. Electrochemical
                      determination of hydrogen peroxide in plant material in the
                      concentration range from 0.09 to 0.4 µmol (gFW)−1 using
                      the electrochemical sensor system was shown as well as in
                      vivo real-time monitoring of the hydrogen peroxide dynamics
                      as a sign of abiotic stress (intense sunlight). Results of
                      the electrochemical determination were in good agreement
                      with the results of biochemical analysis with the
                      spectrophotometric detection. We anticipate that this method
                      can be extended for the synthesis and integration of
                      multisensor arrays in analytical microsystems and devices
                      for the quantification and real-time in vivo monitoring of
                      other analytes and biomarkers.},
      cin          = {IBI-3},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IBI-3-20200312},
      pnm          = {5241 - Molecular Information Processing in Cellular Systems
                      (POF4-524)},
      pid          = {G:(DE-HGF)POF4-5241},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {33869143},
      UT           = {WOS:000639815200001},
      doi          = {10.3389/fchem.2021.641674},
      url          = {https://juser.fz-juelich.de/record/912398},
}