Laterally substituted biphenyl benzoates ‒ synthesis and mesomorphic properties
| العنوان: | Laterally substituted biphenyl benzoates ‒ synthesis and mesomorphic properties |
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| المؤلفون: | Vladimíra Novotná, František Hampl, Jiří Svoboda, Sergei Stulov, Martin Cigl, Natalia Podoliak, Michal Kohout |
| المصدر: | Liquid Crystals. 48:526-536 |
| بيانات النشر: | Informa UK Limited, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Biphenyl, Materials science, 010405 organic chemistry, 02 engineering and technology, General Chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, Medicinal chemistry, Benzoates, 0104 chemical sciences, chemistry.chemical_compound, chemistry, Lateral substitution, Group (periodic table), Liquid crystal, hemic and lymphatic diseases, General Materials Science, 0210 nano-technology |
| الوصف: | We have synthesised several series of dialkoxy-terminated biphenyl benzoates with lateral substituents (X = F, Cl) in the vicinity of the ester linking group, varying the length of the terminal alkyl chains. The aim was to study mesomorphic properties of these new compounds and compare them with the previously reported analogous phenyl biphenylcarboxylates, which possess reverse orientation of the ester linking group. The studied compounds were characterised by differential scanning calorimetry, polarising optical microscopy and birefringence measurements. For selected homologues, the type of mesophases was confirmed by x-ray scattering analysis. We calculated the dipole moments and suggested its correlation with the preference of tilted smectic phases in studied biphenyl benzoates. Generally, lateral substitution causes the drop of phase transition temperatures as well as melting points, giving rise to mesophases in a wide temperature range, in several cases down to the room temperature. |
| تدمد: | 1366-5855 0267-8292 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe9636043c490aa6e01acd04f0fe3f51 https://doi.org/10.1080/02678292.2020.1794069 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....fe9636043c490aa6e01acd04f0fe3f51 |
| قاعدة البيانات: | OpenAIRE |
PDF full text from Publisher | تدمد: | 13665855 02678292 |
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