Novel liquid crystalline (LC) compositions are suggested and studied as elements of LC-nose. This allows for optical detection of several volatile organic compounds (VOCs). Ethanol, toluene, pyridine and acetic acid were detected by means of colorimetric and spectroscopic techniques during their diffusion inside chiral elements of LC-nose. Selectivity to different VOCs is enhanced by means of components of liquid crystal matrix with different viscosity, affinities to the solvents, and abilities to form hydrogen bonding.

中文翻译：

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基于手性光子带隙材料的液晶鼻：选择性响应原理

建议并研究了新型液晶 (LC) 组合物作为 LC-nose 的元素。这允许对几种挥发性有机化合物 (VOC) 进行光学检测。乙醇、甲苯、吡啶和乙酸在它们在LC-nose 的手性元素中的扩散过程中通过比色和光谱技术进行检测。通过不同粘度、对溶剂的亲和力和形成氢键能力的液晶基质组分，提高了对不同 VOC 的选择性。