Oxazoline derivatives exhibiting chiral liquid crystalline mesophases

0583489 - FZÚ 2024 RIV GB eng J - Článek v odborném periodiku
Pomeisl, Karel - Podoliak, Natalia - Vaňkátová, Petra - Hamplová, Věra - Novotná, Vladimíra - Pociecha, D. - Cigl, Martin
Oxazoline derivatives exhibiting chiral liquid crystalline mesophases.
Liquid Crystals. Roč. 50, 13-14 (2023), s. 2360-2370. ISSN 0267-8292. E-ISSN 1366-5855
Grant CEP: GA ČR(CZ) GA22-16499S
Institucionální podpora: RVO:68378271
Klíčová slova: helical twisting power * mesomorphic properties * (s)-lactic acid * Oxazoline derivatives * smectics * TGB phases * ferroelectric phase
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 2.2, rok: 2022
Způsob publikování: Open access

We have designed new chiral mesogens, OXm/n, containing an oxazoline chiral motif derived from natural L-serine amino acid. Our effort was concentrated on the evaluation of the synthetic accessibility of these new compounds and preserving their optical purity, which was determined using chiral high-performance liquid chromatography. We established materials mesomorphic properties and confirmed the phase identification by X-ray scattering studies. Depending on the ratio between the terminal alkyl chain lengths, the studied materials exhibited various smectic mesophases. The derivatives OXm/n with conformationally rigid oxazoline chiral moiety were compared with the structurally similar smectogens, ZLm/n, having a flexible (S)-lactate chiral unit, in order to investigate the effect of rigidisation of the chiral unit on the mesomorphic properties.
Trvalý link: https://hdl.handle.net/11104/0351453