Institut de Chimie Moléculaire et des Matériaux d'Orsay

Laboratoire de Chimie Inorganique - LCI

Photoswitching of stilbenoid complexes in diluted thin films and crystalline media

Marie-Laure Boillot
Olga Iasco (post-doc), Jérôme Lainey (Ph.D. candidate), Luong-Lam Nguyen (Ph.D. candidate)




Spin-crossover, Z/E isomerization,  Solid confinement, photochromism, LIESST, LD-LISC, optical memory

The electronic properties of functionalized Fe(II) complexes are controlled by light. When illuminated, the compounds dispersed in polymeric films show the features typical for Z/E isomerizations of the organic moiety and photomagnetism of the inorganic moiety. This ligand-driven light-induced spin change activity has been discussed from a X-ray structural analysis. In the crystal, the Z-to-E isomerization of stilbenoids occurs via a visible excitation of the S=2 Fe(II) complex leading to a spin-crossover type photoproduct.

Recent publications

Unidirectional photoisomerization of styrylpyridine for switching the magnetic behavior of an iron(II) complex : a MLCT pathway in crystalline solids, A. Tissot et al J. Phys. Chem. C, 2010, 114, 21715-21722. See also M.-L. Boillot et al, Inorg. Chem., 2009, 48, 4729.



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