posted on 2019-11-20, 15:15authored byMirosław 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.