Table 1. Diffusion parameters extracted from fits by applying the SS jump model to fit ΓT(Q 2) within Q = 0.2–1.0 and 0.2–1.8 Å−1 ranges at 0.1 and 200 MPa.
Sample | Pressure/MPa | Diffusion parameters applying the SS jump model over Q-range indicated |
τR/ps | ΔP/% | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Q-range: 0.2–1.0 Å−1 |
Q-range: 0.2–1.8 Å−1 |
|||||||||
DT×10−5/cm2s−1 | τ0/ps | 2W | DT×10−5/cm2s−1 | τ0/ps | 2W | ΔP/% | ||||
Hydrogenated buffer (Hb) | 0.1 | — | — | — | 2.70 ± 0.20 | 1.0 ± 0.10 | 0.01 | −11 | 1.68 ± 0.06 | + 18 |
200 | — | — | — | 2.40 ± 0.19 | 1.22 ± 0.13 | 0.01 | 2.05 ± 0.09 | |||
Deuterated buffer (Db) | 0.1 | — | — | — | 2.00 ± 0.11 | 1.02 ± 0.09 | 0.02 | −9 | 1.80 ± 0.06 | + 10 |
200 | — | — | — | 1.82 ± 0.20 | 1.15 ± 0.16 | 0.02 | 2.00 ± 0.09 | |||
Intracellular medium (Im) (Dc/Hb–Dc/Db)–Hb | 0.1 | — | — | — | 2.43 ± 0.14 | 1.81 ± 0.07 | 0.05 | −18 | 1.85 ± 0.10 | + 26 |
200 | — | — | — | 2.00 ± 0.12 | 2.00 ± 0.10 | 0.05 | 2.50 ± 0.09 | |||
[(Hc/Db)–Db] | 0.1 | 2.12 ± 0.30 | 3.18 ± 0.21 | 0.17 | 2.57 ± 0.40 | 2.04 ± 0.10 | 0.07 | −18 | 1.92 ± 0.12 | + 12 |
200 | 1.67 ± 0.40 | 3.71 ± 0.19 | 0.24 | 2.11 ± 0.30 | 2.11 ± 0.09 | 0.08 | 2.18 ± 0.10 | |||
[(Dc/Hb)–Hb] | 0.1 | 2.12 ± 0.40 | 3.22 ± 0.26 | 0.17 | 2.45 ± 0.36 | 1.97 ± 0.25 | 0.07 | −18 | 1.95 ± 0.09 | + 11 |
200 | 1.82 ± 0.30 | 3.46 ± 0.22 | 0.20 | 2.05 ± 0.30 | 2.13 ± 0.08 | 0.08 | 2.20 ± 0.09 | |||
[((H/D)–Im)–Db] | 0.1 | 1.75 ± 0.36 | 2.27 ± 0.10 | 0.09 | 2.43 ± 0.24 | 1.89 ± 0.09 | 0.04 | −20 | — | |
200 | 1.52 ± 0.38 | 2.45 ± 0.33 | 0.09 | 1.95 ± 0.30 | 2.15 ± 0.08 | 0.06 | — | |||
[((D/H)–Im)–Hb] | 0.1 | 1.82 ± 0.25 | 2.21 ± 0.30 | 0.10 | 2.64 ± 0.36 | 2.01 ± 0.17 | 0.05 | −21 | — | |
200 | 1.52 ± 0.36 | 2.49 ± 0.27 | 0.11 | 2.10 ± 0.21 | 2.35 ± 0.12 | 0.05 | — |
The rotational relaxational time (τR) was extracted from the fit of the dynamic structure factor to the broad Lorentzian component.