Table 2.
Luminescent spectral data and lifetime measurement for the compounds 1–7.
Compound | λmax, solution (298 K)a | |
---|---|---|
λexc | λem [τ (μs)] | |
1 | 296, 336, 370, 407 | 521[10] |
2 | 290, 350 sh, 371 sh, 400 | 513[11] |
3 | 294, 337, 370, 404 | 517 [10] |
4 | 298 sh, 342, 368 sh | 496 [7] |
5 | 306, 343, 377 sh, 390 | 513 [12] |
6 | 294, 341 sh, 378, 402 | 486 [10] |
7 | 348 sh, 373, 440 | 645, 677 [8], 702 sh |
Data of wavelength are given in nm. Data using DMSO as solvent at room temperature, 5 x 10−4 M.