Two-photon-excited luminescence of genetic structures

The spectra of two-photon-excited luminescence were determined for genetic structures containing aromatic and heterocyclic rings. A method was developed for increasing the intensity of the luminescence emitted by DNA and nucleohistone by introducing an activator. The presence of an activator in DNA nucleotide and in nucleohistone desoxyribonucleoprotein created conditions favourable for population inversion by two-photon laser pumping, which resulted in superfluo-rescence.