Phase collapse caused by blue-light irradiation in a cyanobridged coordination polymer
- Department of Chemistry, School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan)
In this work, we report a photoinduced phase transition, light-induced phase collapse, using rubidium manganese hexacyanoferrate, Rb{sup I}{sub 0.43}Mn{sup II}[Fe{sup III}(CN){sub 6}]{sub 0.81}{center_dot}3H{sub 2}O, which does not exhibit a phase transition upon changing the temperature. However, when this material is irradiated with blue light at temperature around 100-200 K, the Mn{sup II}-Fe{sup III} phase collapses and the valence isomer Mn{sup III}-Fe{sup II} phase appears. The Mn{sup II}-Fe{sup III} phase is perfectly recovered as the temperature increased. Theoretical analysis suggests that the initial Mn{sup II}-Fe{sup III} phase is a thermodynamically metastable phase, trapped at a local free-energy minimum, while the photogenerated Mn{sup III}-Fe{sup II} phase is the true thermodynamically stable phase below 230 K.
- OSTI ID:
- 21123965
- Journal Information:
- Applied Physics Letters, Vol. 93, Issue 2; Other Information: DOI: 10.1063/1.2955822; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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