Introducing the azocinnamic acid scaffold into bent-core liquid crystal design: A structure–property relationship study
Samo za registrovane korisnike
2022
Autori
Gak Simić, KristinaRybak, Paulina
Pociecha, Damian
Cmok, Luka
Drevenšek-Olenik, Irena
Tóth-Katona, Tibor
Trišović, Nemanja
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
A series of bent-core liquid crystals possessing the azocinnamoyl unit in both elongating side arms was synthesized. The chain length was kept fixed for each molecule (C12H25), whereas the substituents at the central and outer rings were varied. The LC phases were assigned by polarizing optical microscopy, differential scanning calorimetry and X-ray diffraction. The investigated compounds are suitably diverse to reveal some aspects of the relationship between molecular structure and the mesomorphic properties. Namely, non-substituted parent compound is crystalline only and the methyl group in position 2 or the chlorine atom in position 4 of the central ring suppresses LC phase formation. Introduction of the strong electron-withdrawing nitro group between the side arms on the central ring leads to a B7 phase. Compounds possessing a bromine atom or two chlorine atoms in the neighbourhood of the ester groups form LC phases typical for rod-like molecules, namely a nematic – smectic phase s...equence. The results are compared with those reported for the azobenzoyl analogues.
Ključne reči:
Bent-core liquid crystals / Cinammic acid / Substituent effects / Supramolecular organisationIzvor:
Journal of Molecular Liquids, 2022, 366, 120182-Izdavač:
- Elsevier B.V.
Finansiranje / projekti:
- Ministarstvo nauke, tehnološkog razvoja i inovacija Republike Srbije, institucionalno finansiranje - 200135 (Univerzitet u Beogradu, Tehnološko-metalurški fakultet) (RS-MESTD-inst-2020-200135)
- Ministarstvo nauke, tehnološkog razvoja i inovacija Republike Srbije, institucionalno finansiranje - 200287 (Inovacioni centar Tehnološko-metalurškog fakulteta u Beogradu doo) (RS-MESTD-inst-2020-200287)
Kolekcije
Institucija/grupa
Inovacioni centarTY - JOUR AU - Gak Simić, Kristina AU - Rybak, Paulina AU - Pociecha, Damian AU - Cmok, Luka AU - Drevenšek-Olenik, Irena AU - Tóth-Katona, Tibor AU - Trišović, Nemanja PY - 2022 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5218 AB - A series of bent-core liquid crystals possessing the azocinnamoyl unit in both elongating side arms was synthesized. The chain length was kept fixed for each molecule (C12H25), whereas the substituents at the central and outer rings were varied. The LC phases were assigned by polarizing optical microscopy, differential scanning calorimetry and X-ray diffraction. The investigated compounds are suitably diverse to reveal some aspects of the relationship between molecular structure and the mesomorphic properties. Namely, non-substituted parent compound is crystalline only and the methyl group in position 2 or the chlorine atom in position 4 of the central ring suppresses LC phase formation. Introduction of the strong electron-withdrawing nitro group between the side arms on the central ring leads to a B7 phase. Compounds possessing a bromine atom or two chlorine atoms in the neighbourhood of the ester groups form LC phases typical for rod-like molecules, namely a nematic – smectic phase sequence. The results are compared with those reported for the azobenzoyl analogues. PB - Elsevier B.V. T2 - Journal of Molecular Liquids T1 - Introducing the azocinnamic acid scaffold into bent-core liquid crystal design: A structure–property relationship study SP - 120182 VL - 366 DO - 10.1016/j.molliq.2022.120182 ER -
@article{ author = "Gak Simić, Kristina and Rybak, Paulina and Pociecha, Damian and Cmok, Luka and Drevenšek-Olenik, Irena and Tóth-Katona, Tibor and Trišović, Nemanja", year = "2022", abstract = "A series of bent-core liquid crystals possessing the azocinnamoyl unit in both elongating side arms was synthesized. The chain length was kept fixed for each molecule (C12H25), whereas the substituents at the central and outer rings were varied. The LC phases were assigned by polarizing optical microscopy, differential scanning calorimetry and X-ray diffraction. The investigated compounds are suitably diverse to reveal some aspects of the relationship between molecular structure and the mesomorphic properties. Namely, non-substituted parent compound is crystalline only and the methyl group in position 2 or the chlorine atom in position 4 of the central ring suppresses LC phase formation. Introduction of the strong electron-withdrawing nitro group between the side arms on the central ring leads to a B7 phase. Compounds possessing a bromine atom or two chlorine atoms in the neighbourhood of the ester groups form LC phases typical for rod-like molecules, namely a nematic – smectic phase sequence. The results are compared with those reported for the azobenzoyl analogues.", publisher = "Elsevier B.V.", journal = "Journal of Molecular Liquids", title = "Introducing the azocinnamic acid scaffold into bent-core liquid crystal design: A structure–property relationship study", pages = "120182", volume = "366", doi = "10.1016/j.molliq.2022.120182" }
Gak Simić, K., Rybak, P., Pociecha, D., Cmok, L., Drevenšek-Olenik, I., Tóth-Katona, T.,& Trišović, N.. (2022). Introducing the azocinnamic acid scaffold into bent-core liquid crystal design: A structure–property relationship study. in Journal of Molecular Liquids Elsevier B.V.., 366, 120182. https://doi.org/10.1016/j.molliq.2022.120182
Gak Simić K, Rybak P, Pociecha D, Cmok L, Drevenšek-Olenik I, Tóth-Katona T, Trišović N. Introducing the azocinnamic acid scaffold into bent-core liquid crystal design: A structure–property relationship study. in Journal of Molecular Liquids. 2022;366:120182. doi:10.1016/j.molliq.2022.120182 .
Gak Simić, Kristina, Rybak, Paulina, Pociecha, Damian, Cmok, Luka, Drevenšek-Olenik, Irena, Tóth-Katona, Tibor, Trišović, Nemanja, "Introducing the azocinnamic acid scaffold into bent-core liquid crystal design: A structure–property relationship study" in Journal of Molecular Liquids, 366 (2022):120182, https://doi.org/10.1016/j.molliq.2022.120182 . .