%0 Journal Article %A Dalchenko, P.G. %A Dzyubenko, M. I. %A Pedash, V. F. %A Pedash, Yu. F. %D 2006 %I Begell House %N 11-15 %P 1003-1014 %R 10.1615/TelecomRadEng.v65.i11.40 %T Comparative Analysis of Singlet and Excited States of Xanthene and Oxazine Dyes %U https://www.dl.begellhouse.com/journals/0632a9d54950b268,021bee984e7a0976,00f3dfd11d0b5028.html %V 65 %X Calculations of the exited states of ionic forms of xanthene and oxazine dyes are carried out in the π-electron approximation. Electron transition energies, their polarization and electron density redistribution in the exited states are evaluated. The use of charge transfer numbers allowed us to establish a genetic bond of exited singlet states of xantene and oxazine compounds. Quantitative characteristics of the donor activity of substituents (amine- and oxy-groups) are obtained and their contribution to the formation of excited terms is determined with the use of localization numbers. %8 2006-07-01