Table 3.

Rate constants of radiative (k_r) and non-radiative (k_nr) intramolecular processes for NTBD in various solvents and mixed DMSO: H₂O systems.

DMSO: H2O	τ1	${\mathrm{\Phi }}_F$	kr [ns-1]	kr [s-1]	knr [ns-1]	knr [s-1]
99:1	1.203	0.3735	0.31	3.10‧10–10	0.52	5.21‧10–10
9:1	0.873	0.2594	0.30	2.97‧10–10	0.85	8.48‧10–10
7:3	0.435	0.179	0.41	4.11‧10–10	1.89	1.89‧10–9
5:5	0.355	0.1936	0.55	5.45‧10–10	2.27	2.27‧10–9
3:7	0.213	0.1308	0.61	6.14‧10–10	4.08	4.08‧10–9
1:9	0.129	0.0573	0.44	4.44‧10–10	7.31	7.31‧10–9
1:99	0.158	0.0265	0.17	1.68‧10–10	6.16	6.16‧10–9

Solvent	τ1	${\mathrm{\Phi }}_F$	kr [ns-1]	kr [s-1]	knr [ns-1]	knr [s-1]
Methanol	1.72	0.82	0.48	4.78‧10–10	0.10	1.03‧10–10
Ethanol	1.76	0.73	0.42	4.16‧10–10	0.15	1.53‧10–10
DMF	1.53	0.48	0.31	3.12‧10–10	0.34	3.42‧10–10
THF	1.61	0.13	0.08	7.99‧10–11	0.54	5.41‧10–10