Dipartimento di Scienze Chimiche, Università di Padova, Padova, Italy.
Phys Chem Chem Phys. 2013 Sep 28;15(36):14961-5. doi: 10.1039/c3cp52222a.
Extending a molecular field model for the orientational order in the nematic phase, we calculate the (2)H-NMR splittings for the achiral solute 8CB-d2 in the twist-bend nematic phase formed by the achiral liquid crystal dimer CB7CB. We give an explanation for the enantiotopic discrimination observed in the spectra and comparison with experimental data allows us to provide quantitative estimates of the order parameters (pitch and conical angle) that characterize the director modulation of the twist-bend nematic phase.
我们将各向异性有序的分子场模型扩展到扭曲向列相，计算了手性溶质 8CB-d2 在由手性液晶二聚体 CB7CB 形成的扭曲向列相中的（2）H-NMR 裂分。我们对手谱中观察到的对映选择性歧视给出了解释，与实验数据的比较使我们能够对手性分子扭曲向列相的指向矢调制特征的序参数（螺距和锥形角）进行定量估计。
