Table 1. Quantum Yield, Lifetime of the Excited State, Rate Constant of Nonradiative and Radiative Decay of Solid Samples, and TD-DFT Calculated Absorption Maxima and Oscillator Strengths.
| TD-DFT
calculated |
|||||||
|---|---|---|---|---|---|---|---|
| complex | observed emission wavelength (nm) | quantum yield (ΦF)a | lifetime for the excited state, τ (ns) | knr (107 s–1) | kr (107 s–1) | λmax (nm) | oscillator strength (f) |
| 1 | 437 | 0.0414 | 3.788 | 25.30 | 1.093 | 340 | 0.0003 |
| 2 | 438 | 0.0261 | 3.554 | 27.40 | 0.734 | 383 | 0.0095 |
| 3 | 434 | 0.0148 | 3.025 | 32.57 | 0.489 | 332 | 0.0002 |
| 4 | 439 | 0.1356 | 3.506 | 24.65 | 3.867 | 392 | 0.0350 |
| 5 | 448 | 0.0056 | 3.780 | 26.30 | 0.148 | 326 | 0.0149 |
a
In each case, biexponential decay is observed, and only the higher lifetime relating AIE is shown here.