Table 3. Fluorescence lifetimes of SAL-3 in different aqueous solvents at different pH with F408 cut-off filter and diode 294 nm.

SAL-3 in H2O : Pr-OH
F408
pH	α	τ ± Δτ
9 : 1		2.693 ± 0.023
8 : 2		2.837 ± 0.016
7 : 3		2.741 ± 0.014
6 : 4		2.620 ± 0.014
5 : 5		2.444 ± 0.014
4 : 6		2.264 ± 0.013
3 : 7		2.054 ± 0.012
2 : 8		1.923 ± 0.013
1 : 9		1.893 ± 0.023