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@ARTICLE{Koposova:862800,
      author       = {Koposova, Ekaterina A. and Offenhäusser, Andreas and
                      Ermolenko, Yuri E. and Mourzina, Youlia},
      title        = {{P}hotoresponsive {P}orphyrin {N}anotubes of
                      {M}eso-tetra(4-{S}ulfonatophenyl){P}orphyrin and {S}n({IV})
                      meso-tetra(4-pyridyl)porphyrin},
      journal      = {Frontiers in Chemistry},
      volume       = {7},
      issn         = {2296-2646},
      address      = {Lausanne},
      publisher    = {Frontiers Media},
      reportid     = {FZJ-2019-03019},
      pages        = {351},
      year         = {2019},
      abstract     = {Porphyrin macrocycles and their supramolecular
                      nanoassemblies are being widely explored in energy
                      harvesting, sensor development, catalysis, and medicine
                      because of a good tunability of their light-induced charge
                      separation and electron/energy transfer properties. In the
                      present work, we prepared and studied photoresponsive
                      porphyrin nanotubes formed by the self-assembly of
                      meso-tetrakis(4-sulfonatophenyl)porphyrin and Sn(IV)
                      meso-tetra(4-pyridyl)porphyrin. Scanning electron microscopy
                      and transmission electron microscopy showed that these
                      tubular nanostructures were hollow with open ends and their
                      length was 0.4–0.8 μm, the inner diameter was 7–15 nm,
                      and the outer diameter was 30–70 nm. Porphyrin tectons,
                      H4TPPS2−4 : Sn(IV)TPyP4+, self-assemble into the nanotubes
                      in a ratio of 2:1, respectively, as determined by the
                      elemental analysis. The photoconductivity of the porphyrin
                      nanotubes was determined to be as high as 3.1 × 10−4 S
                      m−1, and the dependence of the photoconductance on
                      distance and temperature was investigated. Excitation of the
                      Q-band region with a Q-band of SnTPyP4+ (550–552 nm) and
                      the band at 714 nm, which is associated with J-aggregation,
                      was responsible for about 34 $\%$ of the photoconductive
                      activity of the H4TPPS2−4-Sn(IV)TPyP4+ porphyrin
                      nanotubes. The sensor properties of the H4TPPS2−4-
                      Sn(IV)TPyP4+ nanotubes in the presence of iodine vapor and
                      salicylate anions down to millimolar range were examined in
                      a chemiresistor sensing mode. We have shown that the
                      porphyrin nanotubes advantageously combine the
                      characteristics of a sensor and a transducer, thus
                      demonstrating their great potential as efficient functional
                      layers for sensing devices and biomimetic
                      nanoarchitectures.},
      cin          = {ICS-8},
      ddc          = {540},
      cid          = {I:(DE-Juel1)ICS-8-20110106},
      pnm          = {523 - Controlling Configuration-Based Phenomena (POF3-523)},
      pid          = {G:(DE-HGF)POF3-523},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:31157213},
      UT           = {WOS:000468136200001},
      doi          = {10.3389/fchem.2019.00351},
      url          = {https://juser.fz-juelich.de/record/862800},
}