Introducing the azocinnamic acid scaffold into bent-core liquid crystal design: A structure–property relationship study

Simić, Kristina Gak; Rybak, Paulina; Pociecha, Damian; Cmok, Luka; Drevenšek‐Olenik, Irena; Tóth-Katona, Tibor; Trišović, Nemanja

doi:10.1016/j.molliq.2022.120182

Cited by 2 publications

(2 citation statements)

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“…Due to the photoswitching properties of azo materials, a large number of research groups have worked on to synthesized azo based various shaped liquid crystalline materials with good photophysical properties [19–25] . In the literature survey, very few reports published on supramolecular materials based on azo linker bearing columnar liquid crystalline properties [26–28] . Calixarene is a well‐known macrocycle having significant active blocks with well‐organized molecular shape which make them more specific towards the host‐guest recognition properties [29] .…”

Section: Introductionmentioning

confidence: 99%

“…[19][20][21][22][23][24][25] In the literature survey, very few reports published on supramolecular materials based on azo linker bearing columnar liquid crystalline properties. [26][27][28] Calixarene is a well-known macrocycle having significant active blocks with well-organized molecular shape which make them more specific towards the host-guest recognition properties. [29] It has a polar rim, a nonpolar rim and a hydrophobic cavity which can be functionalized by different moieties and groups.…”

Section: Introductionmentioning

confidence: 99%

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Thiacalixarene Appended Azo‐based Supramolecular Systems: Self‐assembly and Photo Tuning Reversible Liquid Crystalline Properties

et al. 2023

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Four new azo‐based supramolecular materials containing thiacalixarene core substituted by variable alkoxy groups (TFA1–TFA4) have been designed and synthesized for the mesomorphic and photoswitching properties. The liquid crystalline behavior were accomplished by using DSC, POM, and XRD studies. All azo‐based thiacalixarene based materials with short and higher chain length display columnar hexagonal mesophase with broad temperature range. The thermal behavior of all the materials was investigated by DSC and TGA study. The structural and conformational study of the lower rim functionalized materials was confirmed by using different techniques. These thiacalixarene moulded liquid crystalline compounds shows columnar self‐assembly type behavior and higher thermal stability. The introduction of bi‐substituted azo‐ester network towards the lower rim of thiacalixarene core has impact on the electron delocalization and liquid crystalline properties. The photoswitching properties suggested cis and trans azo‐isomerization under radiation of UV light and higher thermal back relaxation time. The mesogenic behaviour of compound TFA2 and TFA4 were demolished by the influence of cis and trans isomerization. The structure‐property correlation is studied to understand the variation in mesogenic properties with the substitution of variable alkoxy side chain.

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Section: Introductionmentioning

confidence: 99%