Hydrogen-bond complexes of dicarboxylic malonic and glutaric acids with beta-N-dimethylamino-4-dodecyloxypropiophenone are studied by means of FT-IR spectroscopy, optical microscopy, DSC and X-ray analysis. The formation of a thermotropic SA phase is proved and the model of the layered structure formation is given. The mesomorphic behavior of complexes is discussed in terms of amphiphilic systems.