Table 2.

Multiexponential intensity decay of BMQ and o-BMQBA

Compound	[CN−] (µM)	τ1 (ns)	α1	τ2 (ns)	α2	$\overline{\tau }(\text{ns})$	$\langle \tau \rangle (\text{ns})$	χ2
o-BMQBAa	0	2.18	0.4646	4.74	0.5354	4.01	3.55	1.00
	5	2.14	0.4615	4.45	0.5385	3.78	3.38	1.12
	10	2.28	0.5704	4.75	0.4296	3.78	3.34	1.04
	15	1.86	0.3265	3.64	0.6735	3.29	3.06	0.97
	20	1.88	0.3476	3.69	0.6524	3.30	3.06	1.04
	30	1.44	0.1762	3.27	0.8238	3.11	2.95	1.21
	40	1.92	0.3511	3.59	0.6489	3.21	3.00	0.90
	50	1.87	0.3320	3.58	0.6680	3.22	3.01	1.07
BMQa	0	2.59	1.0	–	–	2.59	2.59	1.07
	5	2.58	1.0	–	–	2.58	2.58	1.09
	10	2.59	1.0	–	–	2.59	2.59	1.07
	15	2.57	1.0	–	–	2.57	2.57	1.02
	20	2.57	1.0	–	–	2.57	2.57	1.12
	30	2.55	1.0	–	–	2.55	2.55	1.08
	40	2.55	1.0	–	–	2.55	2.55	1.14
	50	2.55	1.0	–	–	2.55	2.55	1.17

^aλ_ex = 372 nm, emission was collected with a 416 nm cut-off filter. BMQ K_SV ≈ 314 M⁻¹. The free columns indicate that the intensity decay was not described well by the addition of an extra decay time, τ₂.