title: Synergistic photomagnetic effects in coordination polymer heterostructure particles of Hofmann-like Fe(4-phenylpyridine)2[Ni(CN)4]·0.5H2O and K0.4Ni[Cr(CN)6]0.8·nH2O.
abstract: New nanometer scale heterostructure particles of the two-dimensional Hofmann-like Fe(ii) spin-crossover network, Fe(phpy)2[Ni(CN)4]·0.5H2O {phpy = 4-phenylpyridine}, and the Prussian blue analogue K0.4Ni1.0[Cr(CN)6]0.8·nH2O (NiCr-PBA) have been developed, exhibiting synergistic photomagnetic effects, whereby the LIESST (light-induced electron spin-state trapping) effect in the Hofmann-like material induces a magnetization change in the NiCr-PBA. A variety of microscopic and spectroscopic techniques demonstrate the heterogeneous growth of the NiCr-PBA on the Hofmann seed particles and show the Hofmann compound retains its thermal and photoinduced spin transition properties in the heterostructure. The photoinduced magnetization change in the NiCr-PBA network arises from coupling of the two lattices despite dissimilar structure types. Isothermal magnetization minor hysteresis loop studies at 5 K show light absorption leads to changes in the local anisotropy of NiCr-PBA magnetic domains, providing direct evidence for a general magnetomechanical mechanism of light-switchable magnetism in coordination polymer heterostructures combining a photoactive material with a magnet.
authors.affiliation: Department of Chemistry, University of Florida, Gainesville, FL 32611-7200, USA. talham@chem.ufl.edu.
authors.forename: Corey R
authors.initials: CR
authors.lastname: Gros
authors.forename: Marcus K
authors.initials: MK
authors.lastname: Peprah
authors.forename: Ashley C
authors.initials: AC
authors.lastname: Felts
authors.forename: Tatiana V
authors.initials: TV
authors.lastname: Brinzari
authors.forename: Olivia N
authors.initials: ON
authors.lastname: Risset
authors.forename: John M
authors.initials: JM
authors.lastname: Cain
authors.forename: Cauê F
authors.initials: CF
authors.lastname: Ferreira
authors.forename: Mark W
authors.initials: MW
authors.lastname: Meisel
authors.forename: Daniel R
authors.initials: DR
authors.lastname: Talham