SELF LUMINESCENCE OF WATER AND HIGHLY DIL UTED SOLUTIONS OF DIPEPTIDES

Distilled water is show to possess weak luminescence in near ultraviol et and visible spectral range. Exitation spectrum has two maxima at 27 0 and 310 nm. Except of sharp Raman scattering lines the corresponding emission spectra have wide luminescence bands at 360 and 470 nm, whic h amplitudes depend on the properties of water. The intensity of lumin escence is sensitive to storage time, the presence of a small amount o f organic substances both with and without luminescent characteristics . The analysis of exitation, emission and absorption spectra modified by the above mentioned factors suggests that the observed luminescence is of mixed type: luminescence is induced not only by the centres of emission, but in addition by an energy absorbed by the main substance and transmitted through a system of quasilattice to emission centres. Water is considered as an infinite structure containing defects. The e ffects obtained are caused by the displacement of structural equilibri um in the system.