title: Control of the transition temperatures of metallomesogens by specific interface design: application to Mn12 single molecule magnets.
abstract: Reaction of the Single Molecule Magnet [Mn(12)O(12)(CH(3)CO(2))(16)(H(2)O)(4)] (Mn(12)) with mesogenic dendritic ligands Li (i = 4, 5) quantitatively yields functional clusters [Mn(12)O(12)(Li-H)(16)(H(2)O)(4)] (i = 4, 5) that self-organize into a thermotropic SmA-type liquid crystalline phase. The perturbation of the molecular interface by methylation of the terminal mesogenic cyanobiphenyl groups induces a significant decrease of the clearing temperature without affecting the magnetic properties and the supramolecular organization of the Mn(12)-based clusters.
authors.affiliation: Department of Inorganic, Analytical and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland. Emmanuel.Terazzi@unige.ch
authors.forename: E
authors.initials: E
authors.lastname: Terazzi
authors.forename: T B
authors.initials: TB
authors.lastname: Jensen
authors.forename: B
authors.initials: B
authors.lastname: Donnio
authors.forename: K
authors.initials: K
authors.lastname: Buchwalder
authors.forename: C
authors.initials: C
authors.lastname: Bourgogne
authors.forename: G
authors.initials: G
authors.lastname: Rogez
authors.forename: B
authors.initials: B
authors.lastname: Heinrich
authors.forename: J
authors.initials: J
authors.lastname: Gallani
authors.forename: C
authors.initials: C
authors.lastname: Piguet