Solid State Structure and Lyotropic Mesomorphism of Rare-Earth Trisdode cylsulphates in the Water-Ethylene Glycol System  

作　　者：Liesbet Jongen Koen Binnemans 

机构地区：[1]KatholiekeUniversiteitLeuven,KatholiekeUniversiteitLeuven DepartmentofChemistry,Celestijnenlaan200F,B3001Leuven,Belgium,DepartmentofChemistry,Celestijnenlaan200F,B3001Leuven,Belgium

出　　处：《Journal of Rare Earths》2003年第2期101-104,共4页稀土学报（英文版）

摘　　要：The phase behaviour of lanthanide(Ⅲ) dodecylsulphates, Ln(C 12 H 25 SO 4) 3, by thermo optical microscopy using Lawrence penetration technique was investigated. The lyotropic phase behaviour of lanthanide(Ⅲ) dodecylsulphates in ethylene glycol water in mixtures hereof, depends on the composition of the solvent. For pure ethylene glycol and mixtures of ethylene glycol and water three different mesophases are formed, i.e. a lamellar, a cubic and a hexagonal phase, whereas when water is used as solvent no cubic phase is formed. The size of the lanthanide ion has no influence on the mesomorphism of these metallomesogens, although the smaller the lanthanide ion the lower the solubility.The phase behaviour of lanthanide(Ⅲ) dodecylsulphates, Ln(C 12 H 25 SO 4) 3, by thermo optical microscopy using Lawrence penetration technique was investigated. The lyotropic phase behaviour of lanthanide(Ⅲ) dodecylsulphates in ethylene glycol water in mixtures hereof, depends on the composition of the solvent. For pure ethylene glycol and mixtures of ethylene glycol and water three different mesophases are formed, i.e. a lamellar, a cubic and a hexagonal phase, whereas when water is used as solvent no cubic phase is formed. The size of the lanthanide ion has no influence on the mesomorphism of these metallomesogens, although the smaller the lanthanide ion the lower the solubility.

关 键 词：inorgamic chemistry LANTHANIDES liquid crystals lyotropic mesophases METALLOMESOGENS SURFACTANTS rare earths 

分 类 号：O621[理学—有机化学]