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Interplay between Dopant Species and a Spin-Crossover Host Lattice during Light-Induced Excited-Spin-State Trapping Probed by Electron Paramagnetic Resonance Spectroscopy
journal contribution
posted on 2018-07-11, 00:00 authored by Sergey V. Tumanov, Sergey L. Veber, Sam Greatorex, Malcolm A. Halcrow, Matvey V. FedinQ-band
electron paramagnetic resonance (EPR) data conclusively demonstrate
that the iron and cobalt centers in the solid solution [Fe(bpp)2]0.97[Co(terpy)2]0.03[BF4]2 (bpp = 2,6-dipyrazol-1-ylpyridine) undergo allosteric
spin-state switching during light-induced excited-spin-state trapping
(LIESST) at 20 K and thermal relaxation around 80 K. EPR of [Cu(terpy)2]2+ and [Cu(bpp)2]2+, doped
into the same host lattice, also indicates expansion of the copper
coordination sphere during LIESST excitation.
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EPRBF 4dipyrazolallosteric spin-stateLIESST excitation0.03copper coordination sphereFe20 K-1-ylpyridinehost latticeElectron Paramagnetic Resonance Spectroscopy Q-band electron80 Kcobalt centersDopant SpeciesSpin-Crossover Host Latticerelaxationdatalight-induced excited-spin-stateCosolutionbppInterplayLight-Induced Excited-Spin-State Trapping Probedresonance0.97Cu
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