| Abstract
| - Mesophase induction was observed in binary mixtures of the liquid-crystalline lanthanum(III) dodecanoate and a nonmesomorphic lanthanide(III) dodecanoate. The compounds havethe stoichiometry LaxLn1-x(C11H23COO)3 (where x is the mole fraction of lanthanum, Ln =Nd, Eu, Ho, Tb, and Yb) and were characterized by elemental microanalysis. The thermalbehavior was investigated by hot-stage polarized optical microscopy, by differential scanningcalorimetry, and by X-ray diffraction at elevated temperatures. The mesophase behavior ofthe compounds strongly depends on the composition of the mixtures and on the lanthanideion. For lanthanum−europium dodecanoate mixtures, less than 4 mol % lanthanum(III)dodecanoate is needed to induce mesomorphism, whereas for lanthanum−ytterbiummixtures, the minimum amount of lanthanum(III) dodecanoate increases to 48 mol %.
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