Non-conventional liquid crystals—the importance of micro-segregation for self-organisation

摘要: Selected examples of recently synthesised non-conventional liquid crystals are highlighted. These cyclic and open chain oligoamides, molecules containing tetrahedral or octahedral central cores, dendrimers, polyhydroxy amphiphiles, taper shaped molecules, with perfluorinated oligosiloxane segments, rod-coil as well special types polycatenar laterally branched calamitic molecules. Their mesomorphic properties discussed a consequence incompatibility, micro-segregation space filling. The analysis is based on the general concept amphiphilicity, which describes any chemical structural contrast within molecule, such hydrophilic/lipophilic, polar/non-polar, hydrocarbon/fluorocarbon, oligosiloxane/hydrocarbon rigid/flexible. will be regarded block Depending degree difference size different building blocks can occur formation lamellar, columnar spheroidal aggregates organise to smectic, cubic mesophases. striking analogies between polymorphism thermotropic lyotropic block-copolymers pointed out.