Spectroscopic data in DCM for chiral photocatalyst 1a, 1c–e and in DMSO for 1b (molar absorption coefficient ε, absorption maxima λabs, fluorescence emission quantum yield ϕf determined using quinine sulphate as a reference and emission maxima λem).
| Entry | PCat | λ abs/nm (ε/L mol−1 cm−1) | λ em/nm | ϕ f |
|---|---|---|---|---|
| 1 | 1a | 296 (4.3 × 104) | <0.01 | |
| 2 | 1b | 267 (7.8 × 104) | <0.01 | |
| 335 (sc) | ||||
| 3 | 1c | 259 (5.1 × 104) | 580 | 0.01 |
| 325 (1.4 × 104) | ||||
| 4 | 1d | 256 (5.8 × 104) | 448 | 0.054 |
| 397 (3.2 × 104) | ||||
| 5 | 1e | 262 (4.7 × 104) | <0.01 |