Exploring Pyroelectricity, Thermal and Photochemical Switching in a Hybrid Organic-Inorganic Crystal by In Situ X-Ray Diffraction.

Autor: Morris JJ; School of Chemistry, Cardiff University Main Building, Park Place, Cardiff, CF10 AT, UK., Bowen CR; Department of Mechanical Engineering, University of Bath, Claverton Down, Bath, BA2 7AY, UK., Coulson BA; School of Chemistry, Cardiff University Main Building, Park Place, Cardiff, CF10 AT, UK., Eaton M; School of Engineering, Cardiff University Queen's Buildings, The Parade, Cardiff, CF24 3AA, UK., Raithby PR; Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK., Saunders LK; Diamond Light Source, Harwell Science and Innovation Campus, Fermi Ave, Didcot, OX11 0DE, UK., Skelton JM; Department of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK., Wang Q; Department of Mechanical Engineering, University of Bath, Claverton Down, Bath, BA2 7AY, UK., Warren MR; Diamond Light Source, Harwell Science and Innovation Campus, Fermi Ave, Didcot, OX11 0DE, UK., Zhang Y; State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan, 410083, China., Hatcher LE; School of Chemistry, Cardiff University Main Building, Park Place, Cardiff, CF10 AT, UK.
Jazyk: angličtina
Zdroj: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2024 May 13; Vol. 63 (20), pp. e202401552. Date of Electronic Publication: 2024 Apr 10.
DOI: 10.1002/anie.202401552
Abstrakt: The switching behavior of the novel hybrid material (FA)Na[Fe(CN) 5 (NO)].H 2 O (1) in response to temperature (T), light irradiation and electric field (E) is studied using in situ X-ray diffraction (XRD). Crystals of 1 display piezoelectricity, pyroelectricity, second and third harmonic generation. XRD shows that the FA + are disordered at room-temperature, but stepwise cooling from 273-100 K induces gradual ordering, while cooling under an applied field (E=+40 kVcm -1 ) induces a sudden phase change at 140 K. Structural-dynamics calculations suggest the field pushes the system into a region of the structural potential-energy surface that is otherwise inaccessible, demonstrating that application of T and E offers an effective route to manipulating the crystal chemistry of these materials. Photocrystallography also reveals photoinduced linkage isomerism, which coexists with but is not correlated to other switching behaviors. These experiments highlight a new approach to in situ studies of hybrid materials, providing insight into the structure-property relationships that underpin their functionality.
(© 2024 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.)
Databáze: MEDLINE
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