Table 6. Fluorescence decay of the K2T23 diketo conformers.
| Solvent | τ1 (f1) | τ2 (f2) | τ3 (f3) |
|---|---|---|---|
| Cyclohexane | 259 ± 29 (.26) | 2312 ± 42 (.74) | -- |
| Chloroform | 252 ± 20 (.46) | 1866 ± 128 (.35) | 3540 67 (.19) |
| Dichloromethane | 283 ± 27 (.36) | 1723 ± 108 (.36) | 4090 ± 94 (.28) |
| Acetonitrile | 229 ± 33 (.14) | 1478 ± 91 (.37) | 4255 ± 249 (.49) |
| Dimethylformamide | 154 ± 36 (.19) | 1570 ± 117 (.32) | 4314 ± 189 (.49) |
| Dimethylsulfoxide | 567 ± 11 (.38) | -- | 4076 ± 70 (.62) |
| Isopropanol | 422 ± 42 (.20) | 1268 ± 106 (.33) | 4409 ± 214 (.47) |
| Ethanol | 245 ± 34 (.22) | 1724 ± 84 (.33) | 4104 ± 124 (.45) |
| Methanol | 212 ± 23 (.09) | 1748 ± 95 (.31) | 4025 ± 146 (.60) |
Decay times and relative amplitudes of K2T23 in the Table 1 solvents upon excitation at 280 nm.