ABSTRACT Here we discuss the use of deuteriated probe molecules in NMR studies of the nematic (N) and twist-bend nematic (NTB) phases formed by the generic liquid crystal dimer CB7CB. The key properties of three probes dissolved in the NTB phase investigated are the orientational order Szz B and the conical angle, θ0, of the director with respect to the spectrometer field. In addition for one probe 5CB-d2 it is possible to obtain a measure of the phase chirality from the difference in the quadrupolar splittings given by the prochiral pair of deuterons. The relative simplicity of the probes facilitates the determination of the key properties which are obtained using two different approaches. GRAPHICAL ABSTRACT

中文翻译：

---

使用带有各种自旋探针的 NMR 探索扭弯向列相的行为

摘要 在这里，我们讨论了氘化探针分子在由通用液晶二聚体 CB7CB 形成的向列 (N) 和扭曲弯曲向列 (NTB) 相的 NMR 研究中的使用。溶解在 NTB 相中的三个探针的关键特性是定向顺序 Szz B 和指向矢相对于光谱仪场的锥角 θ0。此外，对于一个探针 5CB-d2，可以从由氘核的前手性对给出的四极分裂的差异中获得相位手性的测量值。探针的相对简单性有助于确定使用两种不同方法获得的关键特性。图形概要