Table 4. Radiative (kf) and Nonradiative (knr) Deactivation Rate Constants of Acr with and without Various Clays in Watera.
| radiative
deactivation rate constant/107 s–1 |
nonradiative deactivation rate constant/107 s–1 |
||||||
|---|---|---|---|---|---|---|---|
| compound | clay minerals | kfW | kfC | kfC/kf | knrW | knrC | knrC/knr |
| Acr+ | Sap1.2 | 0.57 | 0.26 | 0.45 | 2.7 | 3.3 | 1.2 |
| PhAcr+ | Sap1.0 | 0.42 | 0.81 | 1.9 | 64.1 | 6.1 | 0.095 |
| PhAcr+ | Sap1.2 | 0.42 | 0.87 | 2.1 | 64.1 | 5.5 | 0.085 |
| PhAcr+ | Sap1.4 | 0.42 | 0.95 | 2.3 | 64.1 | 5.7 | 0.088 |
| PhAcr+ | Sap1.6 | 0.42 | 0.90 | 2.2 | 64.1 | 5.3 | 0.083 |
a
kfW and kf are the kf values of Acr in water and on the clay surface, respectively. knrW and knr are the knr values of Acr in water and on the clay surface, respectively.