Abstract Several N (-hydroxyalkyl)-2, 4-dinitroanilines were transformed into their phosphoramidites (see 5 and 6 in Scheme 1) in view of their use as fluorescence quenchers, and modified 2-aminobenzamides (see 9, 10, 18, and 19 in Scheme 1) were applied in model reactions as fluorophors to determine the relative fluorescence quantum yields of the 3′-Aba and 5′-Dnp-3′-Aba conjugates (Aba= aminobenzamide, Dnp= ...
