Table 6 Fluorescence data for 2-aryl imidazo[1,2-a]pyrimidines 4
From: Fluorescent property of 3-hydroxymethyl imidazo[1,2-a]pyridine and pyrimidine derivatives
UV / Vis | Fluorescence | ||||
|---|---|---|---|---|---|
Compound | Aryl | Absλ max(nm) | λ ex (nm) | λ em (nm) | I |
2 | --- | 229 | 230 | 414.8 | 205.58 |
4a | C6H5 | 237 | 240 | 429.2 | 351.98 |
4b | 4’Cl-C6H4 | 245 | 245 | 428.4 | 334.1 |
4c | 4’F-C6H4 | 240 | 240 | 431.6 | 355.16 |
4e | 4’MeO-C6H4 | 240 | 240 | 439.2 | 303.01 |
4f | 3’,4’diMeO-C6H3 | 222 | 222 | 447.6 | 55.998 |
4g | 4’NO2-C6H4 | 352 | 352 | --- | --- |