Second-order rate constants (k1) and half-lives for the photolysis of CMF in acid solution.
| pH | k 1 (M−1 s−1) ± SD | t 1/2 (min) | Φ a |
|---|---|---|---|
| 2.0 | 1.13 ± 0.01 | 295.0 | 0.16 |
| 3.0 | 4.20 ± 0.05 | 79.3 | 0.20 |
| 3.5 | 8.05 ± 0.09 | 41.4 | 0.23 |
| 4.0 | 10.85 ± 0.11 | 30.7 | 0.29 |
| 4.5 | 6.04 ± 0.07 | 55.2 | 0.06 |
| 5.0 | 2.75 ± 0.03 | 121.2 | 0.05 |
| 6.0 | 1.99 ± 0.02 | 167.5 | 0.05 |
| 7.0 | 2.45 ± 0.02 | 136.1 | 0.12 |
It represents the quantum yields for the formation of LC, the major side-chain photoproduct.