[Spectral manifestations of conformation heterogeneity of a cytidine dinucleotide. A fraction with strong exciton base-base interaction].
The absorption, emission and excitation luminescence spectra of CpCp have been studied in comparison with the same of Cp at 77K in the glass mixture (ethyleneglycol: water, 1:1, v/v). It is shown, that the CpCp fluorescence is of dual nature: eximer and exciton. The exciton absorption spectrum with split band (3000 cm-1) has been calculated by means of the fluorescence exciton spectrum. It corresponds to the "conservative" part of the CD spectrum.
D001483:Base Sequence; D003568:Cytidine Monophosphate / Q000031:analogs & derivatives / Q000032:analysis*; D003597:Cytosine Nucleotides / Q000032:analysis*; D005453:Fluorescence; D009690:Nucleic Acid Conformation
D003597:Cytosine Nucleotides; C024660:CpCp; D003568:Cytidine Monophosphate
Spektral'nye proiavleniia konformatsionnoĭ geterogennosti v tsitidinovom dinukleotide. Obnaruzhenie fraktsii s sil'nym éksitonnym vzaimodeĭstviem mezhdu osnovaniiami.