Table 3.

Photophysical properties of 6-triazolyl compounds 7a–f, 10a–f, 8a–f and 11a–f.^a

Entry	Structure	Compound	R	λabs, nm	λemb, nm	Δλ, nm	Φ
1	7	7a	-H	360	444	84	0.59
2		7b	-OMe	359	442	83	0.61
3		7c	-NMe2	361	577	216	0.32
4		7d	-F	360	444	84	0.57
5		7e	-CF3	362	452	90	0.58
6		7f	-CN	363	453	90	0.58
7	10	10a	-H	375	472	97	0.52
8		10b	-OMe	374	466	92	0.56
9		10c	-NMe2	369	528	159	0.35
10		10d	-F	375	472	97	0.53
11		10e	-CF3	377	468	91	0.54
12		10f	-CN	378	482	104	0.36
13	8	8a	-H	357	445	88	0.57
14		8b	-OMe	357	444	87	0.59
15		8c	-NMe2	360	445; 581	85; 221	0.28c
16		8d	-F	360	449	89	0.56
17		8e	-CF3	357	453	96	0.57
18		8f	-CN	360	456	96	0.60
19	11	11a	-H	372	472	100	0.54
20		11b	-OMe	371	471	100	0.52
21		11c	-NMe2	368	536	168	0.35d
22		11d	-F	373	473	100	0.50
23		11e	-CF3	375	481	106	0.51
24		11f	-CN	376	485	109	0.38

^aAll spectra were recorded in MeCN solutions (c = 10⁻⁴ M) at room temperature; ^bcompounds 7 and 8 were excited at 360 nm and compounds 10 and 11 were excited at 370 nm; ^cfluorescence lifetime: 7.79 ± 0.03 ns; ^dfluorescence lifetime: 8.77 ± 0.03 ns.