Complex Dynamics of Pyridinium Cation in Ferroelectric Bis(thiourea)pyridinium Iodide Studied by Quasi-Elastic Neutron Scattering
| Autor: | Miguel A. Gonzalez, J. Wąsicki, Aleksandra Pajzderska, Jan Peter Embs |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
chemistry.chemical_classification
Chemistry Iodide Inorganic chemistry Neutron scattering Atmospheric temperature range Ferroelectricity Surfaces Coatings and Films Electronic Optical and Magnetic Materials Inclusion compound Complex dynamics chemistry.chemical_compound General Energy Thiourea Physical chemistry Pyridinium Physical and Theoretical Chemistry |
| Zdroj: | The Journal of Physical Chemistry C. 115:15164-15171 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/jp201940e |
| Popis: | We have studied the dynamics of a bis(thiourea)pyridinium iodide inclusion compound by means of quasi-elastic neutron scattering (QENS). Our results reveal the complex dynamics of pyridinium cations confined in thiourea channels. Two types of pyridinium cation motions (in-plane and out-of-plane) were characterized in a wide temperature range using spectrometers with different energy resolutions. The QENS data allow description of the geometry of both motions and show that their corresponding correlation times differ more than 2 orders of magnitude at room temperature. The influence of the host thiourea matrix on pyridinium cation dynamics is discussed. |
| Databáze: | OpenAIRE |
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