Table 4.
Change in the I0/I and τ0/τ ratios for the emissive species in air and O2-saturated samples.
| Solvent | Emissive species | Air | Oxygen | ||
|---|---|---|---|---|---|
| I0/I | τ0/τ | I0/I | τ0/τ | ||
| Hexane | M* E* CS* | 5.4 6.3 1.2 | 5.5 3.1 1.0 | 11.4 41.5 1.5 | 8.4 11.1 1.1 |
| Dichloromethane | M* E* CS* | 2.2 2.5 1.2 | 3.0 1.9 1.2 | 4.6 11.2 1.9 | –[a] 5.5 1.3 |
| Ethyl acetate | M* E* CS* | 3.5 5.2 1.1 | 3.6 2.6 1.1 | 8.7 33.5 1.2 | 7.8 8.6 1.1 |
| Tetrahydrofuran | M* E* CS* | 3.1 4.7 1.0 | 4.0 2.7 0.93 | 7.6 30.0 1.0 | 8.0 7.2 0.97 |
| Chloroform | M* E* CS* | 2.2 3.7 1.2 | 1.7 1.7 1.0 | 4.1 16.9 1.5 | 3.8 4.2 1.3 |
| Toluene | M* E* CS* | 2.0 2.4 1.3 | 2.9 2.4 1.0 | 7.9 32.7 1.9 | 8.7 7.4 1.3 |
| Dioxane | M* E* CS* | 2.2 2.4 1.1 | 1.8 1.7 1.2 | 4.6 11.8 1.5 | 4.3 4.1 1.4 |
[a] The lifetime value was close to that of the detection limit of the instrument (<1 ns).