Table 2.

Photophysics studies on Compounds 2, 10, 11 and 12.

dye	λabsa(nm)	ε a (M−1 cm−1)	λemissa (nm)	Φ a
2b	548	86861	554	1.00±0.02 c
2-avidin	481	-	546	-
10	469	17066	542	0.740±02 d
11	569	57032	584	0.950±02 e
12	477	41810	584	0.70±0.01 d
11-avidin	492	-	592	-

^aIn pH = 7.4 buffer (0.1 N Lithium Phosphate).

^bIn CH₂Cl₂.

^cRhodamine B was used as a standard (Φ = 0.73 in EtOH).

^dFluorescein was used as a standard (Φ = 0.92 in 0.1 N NaOH_aq).

^eRhodamine 101 was used as a standard (Φ = 1.00 in EtOH).