Abstract
Abstract Data from a previous study, where a reversal in the sense of the helical twist in an amphiphilic cholesteric liquid crystal (ACLC) is induced by the chiral dopant the hydrochloride of decyl-L-proline, is taken and its interpretation extended. The interpretation involves trans and cis conformers resulting from hindered rotation. The 13C NMR data is used to determine the rotamer populations, which facilitates the calculation of the twisting powers for the individual rotamers. The twisting powers of the trans and cis rotamers are found to be 3900 ± 900 cm−1 and - 650 ± 150 cm−1 respectively.
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