title: Photo-activation of Single Molecule Magnet Behavior in a Manganese-based Complex.
abstract: A major roadblock to fully realizing molecular electronic devices is the ability to control the properties of each molecule in the device. Herein we report the control of the magnetic properties of single-molecule magnets (SMMs), which can be used in memory devices, by using a photo-isomerizable diarthylenthene ligand. Photo-isomerization of the diarylethene ligand bridging two manganese salen complexes with visible light caused a significant change in the SMM behavior due to opening of the six-membered ring of diarylethene ligand, accompanied by reorganization of the entire molecule. The ring-opening activated the frequency-dependent magnetization of the complex. Our results are a major step towards the realization of molecular memory devices composed of SMMs because the SMM behaviour can be turned on and off simply by irradiating the molecule.
authors.affiliation: Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan.|Department of Chemistry, Faculty of Science, Mansoura University, Mansoura, Egypt.
authors.forename: Ahmed
authors.initials: A
authors.lastname: Fetoh
authors.affiliation: Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan.|Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology (JST), 4-1-8 Kawaguchi, Saitama 332-0012, Japan.
authors.forename: Goulven
authors.initials: G
authors.lastname: Cosquer
authors.affiliation: Department of Chemistry and Research Center for Smart Molecules, Rikkyo University, Nishi-Ikebukuro 3-34-1, Toshima-ku, Tokyo, Japan.
authors.forename: Masakazu
authors.initials: M
authors.lastname: Morimoto
authors.affiliation: Department of Chemistry and Research Center for Smart Molecules, Rikkyo University, Nishi-Ikebukuro 3-34-1, Toshima-ku, Tokyo, Japan.
authors.forename: Masahiro
authors.initials: M
authors.lastname: Irie
authors.affiliation: Department of Chemistry, Faculty of Science, Mansoura University, Mansoura, Egypt.
authors.forename: Ola
authors.initials: O
authors.lastname: El-Gammal
authors.affiliation: Department of Chemistry, Faculty of Science, Mansoura University, Mansoura, Egypt.
authors.forename: Gaber
authors.initials: G
authors.lastname: Abu El-Reash
authors.affiliation: Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan.|Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology (JST), 4-1-8 Kawaguchi, Saitama 332-0012, Japan.
authors.forename: Brian K
authors.initials: BK
authors.lastname: Breedlove
authors.affiliation: Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8578, Japan.|Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology (JST), 4-1-8 Kawaguchi, Saitama 332-0012, Japan.
authors.forename: Masahiro
authors.initials: M
authors.lastname: Yamashita