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

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

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

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.

PMID:
21858343
DOI:
10.1039/c1dt10908a
[PubMed]
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