Properties of select multichromophoric photoswitches compared to analogous single chromophores.
| Photoswitch | ref. | Number of chromophore units | λ onset/nm | QY | t 1/2 | ΔH/kJ mol−1 | Energy density/kJ kg−1 |
|---|---|---|---|---|---|---|---|
|
27 | 1 | 374b | 0.39 | 22 h | 102 | 469 |
|
13 | 2 | 411c | 0.94 | 4.33 h (QC–QC) | 183.3 | 514.2 |
|
27 | 1 | 358b | 0.58 | 1320 h | 122 | 629 |
|
13 | 2 | 400c | 0.73 | 10.6 days (QC–QC) | 237.9 (calculated) | 771.4 (calculated) |
|
31 | 2 | 370c | 0.56 | 2 days | 175 | 678 |
|
101 | 1 | 426b | 0.53 | 72 h | 152 | 575 |
|
25 | 2 | 466b | 0.77 | 12 h (QC–QC) | 146.8 | 326 |
|
100 | 1 | 390b | 0.61 | 0.22 days | 114 | 571 |
|
32 | 2 | 420a | 0.44 | 10.7 min | — | — |
|
69 | 1 | 347 (n–πa band) d | 0.23 | 37.7 min | 54.1 | 255 |
|
69 | 2 | 357a | 0.11 | 28.1 h | 94.2 | 272 |
|
69 | 3 | 362a | 0.09 | 20.5 h | 116 | 242 |
|
87 | 1 | 355 (λmax)e | — | 216 min | — | — |
|
87 | 2 | 408 (λmax)e | — | — | — | — |
|
87 | 2 | 365 (λmax)e | — | 160 min | — | — |
Values extracted manually from the reported spectra. Solvents used for measurements.
Toluene.
Cyclohexane.
THF.
MeCN.