Table 2. Spectroscopic Properties of Compounds 3, 5, 9, 11, 13, 14, 15, and 16 Obtained in Toluene, DCM, ACN, and Dioxane.

compound	solvent	λabsmax [nm]	λemmax [nm]	ε [M–1 cm–1]	Stokes shift [cm–1]	ΦF	τavr [ns]	krd [ns]	knre [ns]
3	toluene	418	492	39000	3600	0.02a	0.076	0.26	12.9
	DCM	426	501	42000	3500	0.09a	0.217	0.42	4.19
	ACN	423	513	37100	4100	0.15a	0.95	0.16	0.89
5	dioxane	295	344	12900	4800	0.004b
9	toluene	423	501	87400	3700	0.07a	0.144	0.49	6.46
	DCM	432	508	62400	3500	0.22a	0.365	0.60	2.14
	ACN	428	519	28500	4100	0.32a	0.645	0.50	1.05
11	dioxane	320	345	17300	2300	0.002b
13	toluene	438	478	46300	1900	0.006a	1.23	0.005	0.81
	DCM	445	499	59900	2400	0.23a	1.79	0.13	0.43
	ACN	438	505	23600	3000	0.15a	1.73	0.087	0.49
14	toluene	457	504	50900	2000	0.01a	0.85	0.012	1.17
	DCM	465	522	30000	2300	0.20a	3.56	0.056	0.23
	ACN	458	556	51400	3800	0.19a	1.14	0.17	0.71
15	toluene	442	480	22100	1800	0.003a	0.94	0.003	1.06
	DCM	450	500	33100	2200	0.17a	3.52	0.048	0.24
	ACN	437	513	22700	3400	0.09a	3.1	0.029	0.29
16	toluene	357	489	21300	7600	0.0015c	0.012	0.125	83.2
	DCM	357	483	22200	7300	0.0013c	0.018	0.072	55.4

^aFluorescence quantum yield measured with perylene in cyclohexane (Φ_F = 0.94).

^bQuinine sulfate in 0.5 M aqueous solution of H₂SO₄ (Φ_F = 0.54) as references.

^cUsing an integrating sphere.

^dk_r = Φ_F/τ_avr.

^ek_nr = 1/τ_avr – k_r.