Hydrogen bonding plays an important role in building the super-structures in chemical and biological systems because of its specificity and directionality. In this context, significant works have been conducted recently to study the role of hydrogen bonding interactions in the formation and/or stabilization of mesophases. Also, this flexible and active non-covalent interaction has been widely utilized in other fields such as self-assembly, crystal engineering, polymer chemistry and nanotechnology. However, hydrogen bond interactions have emerged in recent years as a tunable supramolecular synthetic method with adjustable phases and properties in the design of efficient liquid crystalline materials. The present critical review describes the preparation of various pyridine-based hetero-dimeric hydrogen-bonded mesogenic complexes, which were reported over the last 10 years and are mainly made of calamitic, bent, discotic and polymers. Also, it covers the structure, mesophase stability, role of various terminal/lateral substituents, and future perspectives of these complexes.

氢键由于其特殊性和方向性，在化学和生物系统的超结构构建中起着重要作用。在这种情况下，最近进行了大量研究来研究氢键相互作用在中间相的形成和/或稳定中的作用。而且，这种灵活而活跃的非共价相互作用已被广泛用于其他领域，例如自组装，晶体工程，聚合物化学和纳米技术。然而，近年来，氢键相互作用已经作为可调节的超分子合成方法出现，该方法具有可调整的相和性质，用于设计有效的液晶材料。本关键评论描述了各种基于吡啶的异二聚氢键介晶复合物的制备，在过去的10年中有报道，它们主要由cal石，弯曲，盘状和聚合物制成。此外，它涵盖了结构，中间相稳定性，各种末端/侧基取代基的作用以及这些配合物的未来前景。