POGGINI, Lorenzo; LONDI, Giacomo; MILEK, Magdalena; NAÏM, Ahmad; LANZILOTTO, Valeria; CORTIGIANI, Brunetto; BONDINO, Federica; MAGNANO, Elena; OTERO, Edwige; SAINCTAVIT, Philippe; ARRIO, Marie-Anne; JUHIN, Amélie; MARCHIVIE, Mathieu; KHUSNIYAROV, Marat; TOTTI, Federico; ROSA, Patrick; MANNINI, Matteo

doi:10.1039/C9NR05947D

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POGGINI, Lorenzo
Department of Chemistry “Ugo Schiff”

LONDI, Giacomo
Department of Chemistry “Ugo Schiff”

MILEK, Magdalena
Department of Chemistry and Pharmacy

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Nanoscale. 2019, vol. 11, n° 42, p. 20006-20014

Royal Society of Chemistry

Resumen en inglés

Thin films of an iron(II) complex with a photochromic diarylethene-based ligand and featuring a spin-crossover behaviour have been grown by sublimation in ultra-high vacuum on highly oriented pyrolytic graphite and spectroscopically characterized through high-resolution X-ray and ultraviolet photoemission, as well as via X-ray absorption. Temperature-dependent studies demonstrated that the thermally induced spin-crossover is preserved at a sub-monolayer (0.7 ML) coverage. Although the photochromic ligand ad hoc integrated into the complex allows the photo-switching of the spin state of the complex at room temperature both in bulk and for a thick film on highly oriented pyrolytic graphite, this photomagnetic effect is not observed in sub-monolayer deposits. Ab initio calculations justify this behaviour as the result of specific adsorbate–substrate interactions leading to the stabilization of the photoinactive form of the diarylethene ligand over photoactive one on the surface.< Leer menos

DOI

http://dx.doi.org/10.1039/C9NR05947D

Proyecto europeo

Coordinated Access to Lightsources to Promote Standards and Optimization
Stability Problems for Matrices

Proyecto ANR

Synthèse, caractérisation et mesures Optiques sur composés CHIRaux à Transition de Spin - ANR-11-JS07-0013

Orígen

Importado de Hal

Centros de investigación

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026