Polarized infrared spectra, birefringence and DSC measurements and DFT calculations for liquid crystal dimers based on ether cyanobiphenyl with nematic twist-bend phase and their mixtures

The files contain raw data from the analysis to be published in the article entitled „Mix And Match: Twist-Bend Nematic Behaviour In Liquid Crystal Dimer Mixtures".The subject of this study were binary mixtures of 1,ω-bis(4-cyanobiphenyl-4’-yloxy) alkanes, referred to as the CBOnOCB series, where n refers to the number of methylene units in the flexible alkyl spacer. We selected odd-spaced nematogens from the CBOnOCB series (n = 3, 7), which do not exhibit a stable NTB phase individually. The data include the raw infrared spectra as a function of temperature and from a polarized beam for one liquid crystal dimer (BCO7OCB) and its mixture with CBO3OCB dimer in a percentage ratio of 50:50 . The files from the infrared spectroscopic measurements are in a file with the extension bsp, which include a description of the temperatures and polarizations, and contain the determined integral absorbances for selected bands. The samples studied are ether dimers with a mesogenic group: cyanobiphenyl, while the linker length between the arms is 3 and 7. The attached files are labeled with the sample name and polarization.