Table 1. Fitting Parameters for the VSFG Spectra of l-Proline in νCOOD and νAS,COO– Vibrational Regions.
| νCOOD ω0 = 1746 cm–1 Γ = 20 cm–1 | νAS,COO– ω0 = 1628 cm–1 Γ = 22 cm–1 | ||||||
|---|---|---|---|---|---|---|---|
| pH | ANR | φNR | AR | ANR | φNR | AR | |
| 0.9 | 0.12 ± 0.01 | –2 ± 1 | 3.99 ± 0.06 | 0.16 ± 0.01 | 179 ± 12 | 0.13 ± 0.03 | |
| 1.5 | 0.12 ± 0.01 | –4 ± 1 | 3.73 ± 0.04 | 0.16 ± 0.01 | 174 ± 4 | 0.44 ± 0.03 | |
| 1.8 | 0.10 ± 0.03 | –8 ± 1 | 3.43 ± 0.06 | 0.16 ± 0.01 | 175 ± 2 | 0.74 ± 0.02 | |
| 2.2 | 0.08 ± 0.01 | –21 ± 2 | 2.76 ± 0.06 | 0.16 ± 0.01 | 175 ± 2 | 1.1 ± 0.03 | |
| 2.9 | 0.08 ± 0.01 | –24 ± 2 | 1.87 ± 0.05 | 0.17 ± 0.01 | 177 ± 2 | 1.9 ± 0.03 | |
| 3.9 | 0 | 0 | 0.4 ± 0.1 | 0.16 ± 0.01 | 183 ± 1 | 2.73 ± 0.03 | |
| 5 | 0.16 ± 0.01 | 180 ± 1 | 3.93 ± 0.03 | ||||
| 7 | 0.16 ± 0.01 | 179 ± 1 | 4.27 |