Table 3.

Hypochromicity and exciplex yields for various dinucleosides compared with the fraction of stacked bases determined by NMR and CD spectroscopy

Dinucleosideh , %Yield, %Stacked, %
NMR CD §
ApA9.429 ± 538 ± 250
ApC7.627 ± 838 ± 255
ApG5.833 ± 625 ± 2
ApU5.023 ± 934 ± 341
  • Percent hypochromicity at λmax from ref. 37.

  • Ref. 38 for ApA and ApG; ref. 39 for ApC and ApU (20°C).

  • §Ref. 40; solutions contained 4.7 M potassium fluoride.