Table 4. Fluorescence emission maxima of K2T23.
| Solvent | λemi,DK [nm] (ΦFl,DK) | λemi,KE [nm] (ΦFl,KE) |
|---|---|---|
| Cyclohexane | 330, 353 (.243±.007) | 476 (.0010±.0004) |
| Chloroform | 355 (0.283±.005) | 469 (0.0018±.0004) |
| Dichloromethane | 345 (0.194±.004) | 486 (0.0015±.0003) |
| Acetonitrile | 343 (0.314±.003) | 475 (0.0017±.0003) |
| Dimethylformamide | 354 (0.157±.002) | 487 (0.0033±.0005) |
| Dimethylsulfoxide | 350 (0.125±.004) | 492 (0.0035±.0004) |
| Isopropanol | 343 (0.262±.003) | 477 (0.0020±.0002) |
| Ethanol | 344 (0.150±.005) | 479 (0.0018±.0004) |
| Methanol | 343 (0.152±.005) | 474 (0.0022±.0004) |
Emission peak wavelengths of the diketo (λemi,DK, column 2) and keto-enol conformers (λemi,KE, column 3) of K2T23 in the solvents of Table 1. The pertaining fluorescence quantum yields are reported in brackets.