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Spin‐Crossover Nanocrystals with Magnetic, Optical, and Structural Bistability Near Room Temperature
Author(s) -
Boldog Ishtvan,
Gaspar Ana B.,
Martínez Víctor,
PardoIbañez Pablo,
Ksenofontov Vadim,
Bhattacharjee Ashis,
Gütlich Philipp,
Real José A.
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.200801673
Subject(s) - spin crossover , nanocrystal , microemulsion , materials science , anhydrous , bistability , spin (aerodynamics) , chemical physics , nanotechnology , condensed matter physics , pulmonary surfactant , chemical engineering , crystallography , chemistry , optoelectronics , thermodynamics , organic chemistry , physics , engineering
Nanocrystals of the three‐dimensional , spin‐crossover, porous coordination framework [Fe(pz)Pt(CN) 4 ]⋅ n H 2 O (pz=pyrazine; n ≤2.5) have been synthesized from water‐in‐oil microemulsions. The surfactant‐free nanocrystals readily desorb water and the resulting anhydrous compounds exhibit thermally induced electronic bistability accompanied by a pronounced color change (see picture; HS=high spin, LS=low spin) close to room temperature.