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Scientific article
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Rational tuning of melting entropies for designing luminescent lanthanide-containing thermotropic liquid crystals at room temperature

Published inChemistry, vol. 13, no. 31, p. 8696-8713
Publication date2007
Abstract

The connection of twelve peripheral and divergent dodecyloxy chains to a central tridentate aromatic binding unit provides the dodecacatenar ligand L11, for which room-temperature mesomorphism is detected. An enthalpically unbalanced large melting entropy (DeltaSmL11=226 J mol(-1) K(-1)) results from the programmed microsegregation induced in the crystalline phase, a phenomenon which is maintained in the associated lanthanide complexes [Ln(L11)(NO3)3] and [Ln(L11)(CF3CO2)3]2. Low-temperature melting processes (-43

Keywords
  • Crystallography, X-Ray
  • Entropy
  • Lanthanoid Series Elements/chemistry
  • Ligands
  • Liquid Crystals/chemistry
  • Luminescence
  • Models, Molecular
  • Molecular Structure
  • Organometallic Compounds/chemical synthesis/chemistry
  • Stereoisomerism
  • Temperature
Citation (ISO format)
ESCANDE, Aude et al. Rational tuning of melting entropies for designing luminescent lanthanide-containing thermotropic liquid crystals at room temperature. In: Chemistry, 2007, vol. 13, n° 31, p. 8696–8713. doi: 10.1002/chem.200700560
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ISSN of the journal0947-6539
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