American Chemical Society
ja9b09576_si_007.cif (2.2 MB)

Site-Selective Photoswitching of Two Distinct Magnetic Chromophores in a Propeller-Like Molecule To Achieve Four Different Magnetic States

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posted on 2019-11-20, 15:15 authored by Mirosław Arczyński, Jan Stanek, Barbara Sieklucka, Kim R. Dunbar, Dawid Pinkowicz
Magnetic photoswitching is a highly important but relatively rare phenomenon for enabling optical writing/reading of the magnetic state of a molecule. In this work, an unprecedented site-selective double photoswitching is reported from the assembly of two different “photomagnetic chromophores” into a single hexanuclear molecule: namely, a spin-crossover Fe­(II) center exhibiting light-induced excited spin state trapping (LIESST) and a photochemically active octacyanometalate­(IV) unit. Four different magnetization levels are accessible through the appropriate combination of violet/red light and temperature, results that highlight the potential of photomagnetic molecules as future molecular memory cells.