Katariya, Kanubhai D. published the artcileCoumarin Schiff base-esters liquid crystals with symmetrical and unsymmetrical alkoxy chains: synthesis, mesomorphic properties and DFT approach, Related Products of bromides-buliding-blocks, the publication is Journal of Molecular Liquids (2022), 119073, database is CAplus.
Herein, two series of coumarin Schiff base-esters liquid crystals I (R1 = R2 = Et, n-Pr, n-octadecyl, etc.) and I (R1 = Et, n-Pr, n-octadecyl, etc.; R2 = n-dodecyl) were prepared Both series were studied for their mesomorphic behavior using differential scanning calorimetry (DSC) for the phase transitions and polarized optical microscopy (POM) to identify the type of mesophase. On varying the alkyl chain length at the both end of mols. systematically in the series I (R1 = R2), compounds of chain lengths 2-7 exhibited an enantiotropic nematic (N) phase whereas I (R1 = R2 = n-octyl) exhibited enantiotropic smectic C (SmC) phase in addition to enantiotropic nematic phase. Compounds of the sym. series I (R1 = R2 = n-decyl, n-dodecyl, n-tetradecyl, n-hexadecyl, n-octadecyl) showed enantiotropic SmC phase. In the unsym. series, enantiotropic nematic mesophase was observed for compounds I (R1 = from Et to n-tetradecyl; R2 = n-dodecyl), while enantiotropic SmC mesophase was observed for compounds I (R1 = from n-hexyl to n-octadecyl; R2 = n-dodecyl). The DFT theor. calculations was conducted for both series to understand the mesomorphic behavior of the investigated compounds Moreover, they were compared with similar reported compounds to explain the relationship between the structural parameters and the mesomorphic behavior.
Journal of Molecular Liquids published new progress about 111-83-1. 111-83-1 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromooctane, and the molecular formula is C8H17Br, Related Products of bromides-buliding-blocks.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary