Table 3.
Photochemical properties of 1–3 in methanol.
| 1 | 2 | 3 | MeOH extract | |
|---|---|---|---|---|
| λabs[a] [nm] (log ε) | 440 (3.48) | 427 (3.89) | 490 (3.92) | 420 |
| 440 (3.85) | 530 (3.58) | |||
| λems[b] [nm] | 607 | 625 | 593 | 593 |
| ϕF[b,c] | 0.016 ± 0.005 | 0.048 ± 0.005 | 0.087 ± 0.002 | 0.04 ± 0.01 |
| τ[d] [ns] | 0.8 | 1.6 | 4.3 | 1.1/4.7 |
| ϕΔ[b,c] | 20 ± 2% | 3 ± 0.3% | 8 ± 2% | 10 ± 1% |
| ϕdecom | 0.78% | 1.6% | 0.18% | – |
[a] In MeOH [b] In air-saturated D4MeOH [c] Relative measurement using [Ru(bpy)3]Cl2 as standard with ΦP = 0.015. Laser settings: 450 nm, 15 mW [d] With a resolution of 0.3 ns.