Control of the transition temperatures of metallomesogens by specific interface design: application to Mn12 single molecule magnets

E Terazzi; T B Jensen; B Donnio; K Buchwalder; C Bourgogne; G Rogez; B Heinrich; J Gallani; C Piguet

doi:10.1039/c1dt10908a

Control of the transition temperatures of metallomesogens by specific interface design: application to Mn12 single molecule magnets

Dalton Trans. 2011 Dec 7;40(45):12028-32. doi: 10.1039/c1dt10908a. Epub 2011 Aug 22.

Authors

E Terazzi¹, T B Jensen, B Donnio, K Buchwalder, C Bourgogne, G Rogez, B Heinrich, J Gallani, C Piguet

Affiliation

¹ Department of Inorganic, Analytical and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, CH-1211 Geneva 4, Switzerland. Emmanuel.Terazzi@unige.ch

PMID: 21858343
DOI: 10.1039/c1dt10908a

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.