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Dynamics of iron in Fe-porphyrin aggregates studied by X-ray absorption and Mössbauer spectroscopy

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The iron-porphyrin aggregates were studied by optical absorption and fluorescence method, infrared spectroscopy, X-ray absorption and Mössbauer spectroscopy. The aggregation of porphyrin molecules strengthens the Fe-ligands bonds and accelerates the spin-spin relaxations. A significant speeding-up of relaxation was observed with lowering the temperature down to 25 K. The comparison of the EXAFS (Extended X-ray Absorption Fine Structure) and Mössbauer spectroscopy results enabled some separation of the individual Fe vibration from its collective movement with ligands.

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Authors and Affiliations

  1. Marian Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30-059, Cracow, Poland

    Katarzyna Dziedzic-Kocurek & Jan Stanek

  2. Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, Al.Mickiewicza 30, 30-059, Cracow, Poland

    Kvetoslava Burda

  3. Henryk Niewodniczański Institute of Nuclear Physics, Radzikowskiego 152, 31-432, Cracow, Poland

    Kvetoslava Burda

Authors
  1. Katarzyna Dziedzic-Kocurek
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  2. Jan Stanek
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  3. Kvetoslava Burda
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Correspondence to Jan Stanek.

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Dziedzic-Kocurek, K., Stanek, J. & Burda, K. Dynamics of iron in Fe-porphyrin aggregates studied by X-ray absorption and Mössbauer spectroscopy. Hyperfine Interact 185, 87–93 (2008). https://doi.org/10.1007/s10751-008-9816-4

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