Table 1. Volumes, Neutron Scattering Lengths, and Scattering Length Densities of the Constituents of the Systems Studied Here.
| Unit | Vm/Å3 | ∑bi/fm | SLD/×10–6 Å–2 |
|---|---|---|---|
| d-ChCl:d-Glyc | 434.9 | 281 | 6.40 |
| h-ChBr:h-Glyc | 434.9a | 17.7 | 0.42 |
| C12D25 | 350.2b | 242 | 6.92 |
| C12H25 | 350.2b | –13.7 | –0.39 |
| D2O | 30.07 | 19.1 | 6.37 |
a
The molecular volume of 1:2 choline bromide:glycerol has been approximated as the same as that of the 1:2 choline chloride:glycerol.29 This is a reasonable assumption based on the similar size of the anions (rCl = 181 pm; rBr = 196 pm).31
b
The molecular volume of the surfactant tail was calculated using the Tanford equations.32