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@ARTICLE{Meinhardt:599272,
      author       = {Meinhardt, Alexander and Lakner, Pirmin and Huber, Patrick
                      and Keller, Thomas F.},
      title        = {{M}apping the nanoscale elastic property modulations of
                      polypyrrole thin films in liquid electrolyte with
                      {EC}-{AFM}},
      journal      = {Nanoscale advances},
      volume       = {6},
      number       = {1},
      issn         = {2516-0230},
      address      = {Cambridge},
      publisher    = {Royal Society of Chemistry},
      reportid     = {PUBDB-2023-07279},
      pages        = {102 - 110},
      year         = {2023},
      abstract     = {Linking structure to mechanical and elastic properties is a
                      major concern for the development of novelelectroactive
                      materials. This work reports on the potential-induced
                      changes in thickness and Youngmodulus of a substrate
                      supported, perchlorate doped polypyrrole thin film (<100 nm)
                      investigated withelectrochemical atomic force microscopy
                      (AFM) under in situ conditions. This was accomplished
                      bynanomechanical mapping of potentiodynamically
                      electropolymerized polypyrrole film in electrolytesolution
                      with AFM during redox cycling. The polypyrrole film
                      thickness and Young modulus follow theelectrical potential
                      nearly linearly, increasing due to solvent and ion influx as
                      the film is oxidized, anddecreasing during reduction. Our
                      measurements also confirm the presence of a
                      potential-independent,passive swelling which is accompanied
                      by softening of the film, likely caused by osmotic
                      effects.Additionally, the heterogeneous distribution of the
                      Young modulus can be directly traced to the typicalnodular
                      surface topography of polypyrrole, with the top of the
                      nodular area possessing lower modulus,thus highlighting the
                      complex relationship between topography and elastic
                      properties.},
      cin          = {FS-NL},
      ddc          = {540},
      cid          = {I:(DE-H253)FS-NL-20120731},
      pnm          = {632 - Materials – Quantum, Complex and Functional
                      Materials (POF4-632) / DFG project 192346071 - SFB 986:
                      Maßgeschneiderte Multiskalige Materialsysteme - M3
                      (192346071) / SFB 986 B07 - Polymere in
                      grenzflächenbestimmten Geometrien: Struktur, Dynamik und
                      Funktion an planaren und in porösen Hybridsystemen (B07)
                      (318019437) / HIRS-0018 - Helmholtz-Lund International
                      School - Intelligent instrumentation for exploring matter at
                      different time and length scales (HELIOS)
                      $(2020_HIRS-0018)$},
      pid          = {G:(DE-HGF)POF4-632 / G:(GEPRIS)192346071 /
                      G:(GEPRIS)318019437 / $G:(DE-HGF)2020_HIRS-0018$},
      experiment   = {EXP:(DE-H253)Nanolab-04-20150101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {38125599},
      UT           = {WOS:001109754500001},
      doi          = {10.1039/D3NA00611E},
      url          = {https://bib-pubdb1.desy.de/record/599272},
}