TABLE 1.
Global analysis parameters
| Excited-state intermediates
|
Ground-state intermediates
|
Photocycle states
|
|||||
|---|---|---|---|---|---|---|---|
| State | ESI1 | ESI2 | ESI3 | GSI1 | GSI2* | I0 | pR |
| Relative ratio | 50% | 40% | 10% | — | — | — | — |
| Lifetime | 600 ± 100 fs | 2.8 ± 0.3 ps | 40 ± 10 ps | 3.6 (1.2)* ± 0.5 ps | 4.0 ± 0.5 ps | 1.5 ± 0.5 ns | ∞† |
| Inhomogeneous branching yields (%)‡ | 50 (GSB) | 80 (GSI) | 99 (GSI) | — | — | 50 (pR) | — |
| 10 (GSI) | 20 (Io) | 1 (Io) | 50 (GSB) ± 10% | ||||
| 40 (Io) | |||||||
| Homogeneous branching yields (%)‡ | 25 (GSB) | 60 (GSI) | 95 (GSI) | 100 (GSB) | 100 (into GSB) | 50 (pR) | — |
| 6 (GSI) | 30 (Io) | 5 (Io) | 100* (GSI2) | 50 (GSB) ± 10% | |||
| 22 (Io) | 10 (ESI3) | ||||||
| 47 (ESI2) | |||||||
Decay lifetimes and branching yields of transient states extracted from the global analysis of the measured data. Relative errors of the branching yields are estimated at <10%. Key: GSB, ground-state bleach; GSI, ground-state intermediate; ESI, excited-state intermediate.
*
A bi-exponential ground-state decay is observed only in 1 ps and later dump data.
†
Infinite with respect to the timescale of the experiment (∼5 ns).
‡
Relative branching yields of the specific state into other states in parentheses.