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Cristallographie et photo-cristallographie haute résolution de composés moléculaires à transition de spin : propriétés structurales, électroniques et mécanismes de conversion

Abstract : Spin transition compounds are particularly interesting owing to their bistability properties which give them promising applications as data storage elements or display devices. These compounds can change their spin state with the variation of an external constraint (temperature, pressure, light irradiation...). The present work is the study, by high resolution X-rays diffraction, of iron(II) spin transition complexes (Fe(phen)2(NCS)2 and Fe(btr)2(NCS)2.H2O) obtained by light irradiation (LIESST). This project includes a methodological work apply to the study of these photo-induced states ; it also concerns the analysis of the transition mechanism, the structure refinement and the electron density distribution modelling of these photo-induced excited states. These goals enter in a better understanding of the physical mechanisms and of the electronic interaction changes occurring during the spin transition.
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http://docnum.univ-lorraine.fr/prive/SCD_T_2005_0142_LEGRAND.pdf
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https://hal.univ-lorraine.fr/tel-01746660
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Submitted on : Thursday, March 29, 2018 - 10:42:07 AM
Last modification on : Tuesday, June 30, 2020 - 3:17:44 PM

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  • HAL Id : tel-01746660, version 1

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Vincent Legrand. Cristallographie et photo-cristallographie haute résolution de composés moléculaires à transition de spin : propriétés structurales, électroniques et mécanismes de conversion. Autre. Université Henri Poincaré - Nancy 1, 2005. Français. ⟨NNT : 2005NAN10142⟩. ⟨tel-01746660⟩

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