% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Schubert:459413,
      author       = {Schubert, Kaja and Schwob, Lucas and Dörner, Simon and
                      Girod, Marion and MacAleese, Luke and Pieterse, Cornelius L.
                      and Schlathölter, Thomas and Techert, Simone and Bari,
                      Sadia},
      title        = {{I}onization and photofragmentation of isolated
                      metalloporphyrin cations investigated by {VUV} action
                      spectroscopy},
      journal      = {Chemistry - a European journal},
      volume       = {27},
      number       = {48},
      issn         = {0947-6539},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {PUBDB-2021-02558},
      pages        = {12371 - 12379},
      year         = {2021},
      abstract     = {We investigated the photoionization and fragmentation of
                      isolated metal protoporphyrin IX cations (MPPIX+ with M=Fe,
                      Co, Zn) by means of vacuum-ultraviolet (VUV) action
                      spectroscopy in the energy range of 8.5–35 eV.
                      Experiments were carried out in the gas phase by interfacing
                      an electrospray ionization tandem mass spectrometer with a
                      synchrotron beamline. The mass spectra and partial ion
                      yields show that photoexcitation of the precursor ions
                      predominantly leads to .CH$_2$COOH radical side-chain losses
                      of the macrocycle with additional methyl radical (.CH$_3$)
                      side-chain losses. Ionization, in contrast, leads to the
                      formation of the intact ionized precursor and various doubly
                      charged fragments which are mostly due to side-chain
                      cleavages. Although statistical fragmentation dominates, we
                      found evidence for non-statistical processes such as new
                      fragments involving for example single and double H2O
                      losses, indicating that different relaxation mechanisms are
                      at play upon photoionization compared to photoexcitation.
                      The measured ionization energies were 9.6±0.2 eV,
                      9.4±0.2 eV and 9.6±0.2 eV for FePPIX$^+$, CoPPIX$^+$
                      and ZnPPIX$^+$, respectively.},
      cin          = {FS-SCS},
      ddc          = {540},
      cid          = {I:(DE-H253)FS-SCS-20131031},
      pnm          = {633 - Life Sciences – Building Blocks of Life: Structure
                      and Function (POF4-633) / DFG project 28586557 - SFB 755:
                      Photonische Abbildungen auf der Nanometerskala (28586557)},
      pid          = {G:(DE-HGF)POF4-633 / G:(GEPRIS)28586557},
      experiment   = {EXP:(DE-MLZ)External-20140101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {34137472},
      UT           = {WOS:000672694700001},
      doi          = {10.1002/chem.202101515},
      url          = {https://bib-pubdb1.desy.de/record/459413},
}