Jean-Claude Bunzli - Introducing bulky functional lanthanide cores into thermotropic metallomesogens: A bottom-up approach

Document created by Jean-Claude Bunzli on Sep 28, 2017
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  Terazzi,E., Suarez,S., Torelli,S., Nozary,H., Imbert,D.,   Mamula,O., Rivera,J.P., Guillet,E., Benech,J.M.,   Bernardinelli,G., Scopelliti,R., Donnio,B., Guillon,D.,   Bunzli,J.C.G., Piguet,C. Advanced Functional Materials  2006 16 (2) 157-168

  Abstract: Basic thermodynamic considerations are   used to rationalize the formation of thermotropic mesophases   incorporating aromatic ligands for trivalent lanthanide metal   ions (Ln). Standard flat and bent molecular interfaces,   separating the central binding unit from the lateral, flexible   alkoxy chains, provide programmed lamellar and columnar   organization in the mesophases, which are removed upon   complexation to Ln(NO3)(3) and Ln(CF3CO2)(3). Only significant   curved aromatic/aliphatic interfaces, found in polycatenar   ligands, are able to overcome the considerable perturbations of   the intermolecular interactions produced by the introduction of   the bulky metallic core. A rich mesomorphism results, which can   be tuned by a judicious control of the metallic coordination   sphere. The exploitation of specific, metal-centered luninescence   for probing phase transitions and microscopic environments in   mesophases is also discussed, as is the use of ionic liquids for   producing tunable luminescent mesophases

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