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Structure and dynamics of guest molecules confined in a mesoporous silica matrix: Complementary NMR and PDF characterisation

Abstract : We present an experimental approach to study the structure and dynamics of molecular functional complexes in porous host matrices. Combining the results of Solid-State NMR and pair distribution function analysis based on total X-ray scattering data the structural arrangement and dynamical behaviour of Na-2[Fe(CN)(5)NO]center dot 2H(2)O (SNP) embedded in amorphous SiO2 matrix is investigated. We show that the SNP complexes are embedded as isolated complexes within the SiO2 pores and propose a structural model for the cation and anion arrangement. Additionally the NMR results demonstrate the rotational dynamics of the SNP complexes.
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https://hal.univ-lorraine.fr/hal-01520989
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Submitted on : Thursday, May 11, 2017 - 12:15:07 PM
Last modification on : Thursday, February 25, 2021 - 10:00:02 AM

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Kuan-Ying Hsieh, El-Eulmi Bendeif, Axel Gansmuller, Sébastien Pillet, Theo Woike, et al.. Structure and dynamics of guest molecules confined in a mesoporous silica matrix: Complementary NMR and PDF characterisation. RSC Advances, Royal Society of Chemistry, 2013, 3 (48), pp.26132-26141. ⟨10.1039/c3ra45347b⟩. ⟨hal-01520989⟩

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