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Guest Effect on Nanopatterned Spin‐Crossover Thin Films
Author(s) -
BartualMurgui Carlos,
Akou Amal,
Salmon Lionel,
Molnár Gábor,
Thibault Christophe,
Real Jose Antonio,
Bousseksou Azzedine
Publication year - 2011
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201101089
Subject(s) - spin crossover , thin film , materials science , spin coating , nanotechnology , molecule , spin transition , raman spectroscopy , spin (aerodynamics) , desorption , chemical physics , spin states , adsorption , chemical engineering , chemistry , inorganic chemistry , crystallography , organic chemistry , optics , physics , engineering , aerospace engineering
Nanopatterned thin films of the metal–organic framework {Fe(bpac)[Pt(CN) 4 ]} (bpac=bis(4‐pyridyl)acetylene) are elaborated by the combination of a sequential assembly process and a lithographic method. Raman microspectroscopy is used to probe the temperature dependence of the spin state of the iron(II) ions in the films (40–90 nm in thickness), and reveals an incomplete but cooperative spin transition comparable to that of the bulk material. Adsorption/desorption of pyridine guest molecules is found to have a substantial influence on the spin‐crossover properties of the thin layers. This interplay between host–guest and spin‐crossover properties in thin films and nanopatterns demonstrates the potential ability of using this kind of material as a microsensor.