Table 1.
Absorption and fluorescence maxima for compounds 1–4
| Substance | Absorption λmax, nm | Fluorescence λmax, nm |
|---|---|---|
| 1 | 206, 257, 320 | 351, 394 |
| 2 | 318, 455 | 525, 563 |
| 3 | 291 | 355 |
| 4 | 209, 338 | 431 |
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