TEMPERATURE EFFECT ON LUMINESCENT PROPERTIES OF N-ARYL-3-AMINOPROPIONIC ACIDS
The results of investigation of temperature influence on fluorescence of two N-aryl-3-aminopropionic acids - N,N-di(2-carboxyethyl)aniline and N,N-di(2-carboxyethyl)-3,4-xylidine - in the water solution and in the crystalline state are presented. It have been established, that the difference of fluorescence spectra of solution and crystal, obtained at room temperature and at 77 K, is determined by basicity of the aminogroup and features of the proton transfer to solvent molecules