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
| Autor: | Corey R. Gros, John M. Cain, Marcus K. Peprah, Olivia N. Risset, Cauê F. Ferreira, Daniel R. Talham, Ashley C. Felts, Mark W. Meisel, T. V. Brinzari |
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| Rok vydání: | 2016 |
| Předmět: |
Prussian blue
Materials science Magnetic domain Condensed matter physics Coordination polymer Magnetism Spin transition Heterojunction 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences LIESST 0104 chemical sciences Inorganic Chemistry Crystallography chemistry.chemical_compound Magnetization chemistry 0210 nano-technology |
| Zdroj: | Dalton Transactions. 45:16624-16634 |
| ISSN: | 1477-9234 1477-9226 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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