Table 3. Emission from the Lowest T1 State (Eem), Distortion Energy Edist (Defined as the Difference between the Energy of the Ground State at Its Optimum and at the Excited State Geometry), and Stabilization Energy Estab (Estab = Edist + Eem)a.
structure |
||||||
---|---|---|---|---|---|---|
Cu1sym1 |
Cu1nosym |
Cu1sym2 |
||||
C2 | C1 | C1 | C1b | C2 | C1 | |
Eem | 1.668 | 1.507 | 1.460 | 1.449 | 1.544 | 1.405 |
λem | 743 | 823 | 849 | 855 | 803 | 882 |
Edist | 0.281 | 0.371 | 0.365 | 0.387 | 0.333 | 0.404 |
Estab | 1.949 | 1.878 | 1.824 | 1.837 | 1.877 | 1.810 |
ΔEST | 0.222 | 0.197 | 0.211 | 0.184 | 0.266 | 0.232 |
SOC | 0.1 | 19.0 | 33.6 | 15.0 | 0.0 | 25.8 |
20.2 | 34.2 | 37.8 | 27.0 | 20.3 | 37.9 | |
20.2 | 34.2 | 37.8 | 27.0 | 20.3 | 37.9 |
Energies in eV, emission wavelength in nm (λem), S1-T1 energy splitting (ΔEST) in eV at T1 geometry and S1-T1 spin orbit coupling in cm–1 of the lowest triplet states T1 at T1 geometry for the three rotamers and group symmetry.
The two phen ligands of Cu1 being inequivalent, the emission properties from both have been computed.