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Light‐Induced Excited Spin State Trapping in an Exchange‐Coupled Nitroxide‐Copper(II)‐Nitroxide Cluster
Author(s) -
Fedin Matvey,
Ovcharenko Victor,
Sagdeev Renad,
Reijerse Edward,
Lubitz Wolfgang,
Bagryanskaya Elena
Publication year - 2008
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200801400
Subject(s) - nitroxide mediated radical polymerization , spin crossover , copper , metastability , cluster (spacecraft) , spin states , excited state , spin (aerodynamics) , chemistry , chemical physics , condensed matter physics , atomic physics , crystallography , physics , polymer , inorganic chemistry , monomer , computer science , programming language , thermodynamics , radical polymerization , organic chemistry
Beyond the classics : An exchange‐coupled three‐spin cluster of copper(II) with nitroxides can be converted by light from a strongly to a weakly coupled spin state (see picture), the latter being metastable at low temperatures. This kind of magnetic photoswitching is very similar to the LIESST effect in spin‐crossover complexes of iron. Such compounds form a new class of systems capable of optical switching of their magnetic properties.