An article Mesomorphic, optical, dielectric, and electro-optic properties of azo-ester materials: Effect of lateral methyl and terminal substituents WOS:000664654300059 published article about THERMOTROPIC LIQUID-CRYSTALS; MESOPHASE BEHAVIOR; SIDE-CHAIN; BENZOTHIAZOLE MESOGEN; AZOBENZENE; IMPACT; ORIENTATION; BENZOATES; MONOMERS; SERIES in [Kamal, Salwa J.; Mahmud, H. N. M. Ekramul; Abdullah, Iskandar] Univ Malaya, Fac Sci, Dept Chem, Kuala Lumpur 50603, Malaysia; [Salleh, Noordini M.; Velayutham, Thamil Selvi; Zahid, N. Idayu] Univ Malaya, Ctr Fundamental & Frontier Sci Nanostruct Self As, Fac Sci, Dept Chem, Kuala Lumpur 50603, Malaysia; [Gopal, Sanjeev R.; Velayutham, Thamil Selvi] Univ Malaya, Fac Sci, Low Dimens Mat Res Ctr, Dept Phys, Kuala Lumpur 50603, Malaysia; [Kamal, Salwa J.] Imam Abdulrahman Bin Faisal Univ, Coll Sci, Dept Chem, POB 1982, Dammam 31441, Saudi Arabia in 2021.0, Cited 46.0. Computed Properties of C7H8O2. The Name is Mequinol. Through research, I have a further understanding and discovery of 150-76-5
The effect of introducing a lateral methyl substituent and the two different alkoxy terminal groups on the mesophase behavior of three-benzene-ring molecular core of azo-ester compounds bearing 2-methylbutoxy unit on the opposite terminal side (C1-C6) were explored. Their structures were confirmed by several spectroscopic techniques (Fourier transform infrared spectroscopy, H-1 and C-13 nuclear magnetic resonance spectroscopy). The mesomorphic properties of these compounds were studied by differential scanning calorimetry, polarized optical microscopy, and small- and wide-angle X-ray scattering. Except for the un-substituted terminals (C1 and C4), all other derivatives are liquid crystalline, exhibiting enantiotropic nematic liquid crystal phase. The alteration of the alkoxy chain length from methoxy to butoxy at the phenyl ester terminal group (ring A) for each set of laterally-neat and laterally methyl-substituted mesogens decreases the nematic temperature range. A decrease in the mesophase temperature range is also observed when a lateral methyl substituent is incorporated into phenylazo ring of the mesogenic core (ring C). Optical study demonstrated that their absorption spectra are identical in shape due to the structural similarities of the mesogenic core. The corresponding fluorescence spectra exhibited blue-emission with the laterally methyl substituted compounds having a relatively higher fluorescence intensity compared to that of its laterally un-substituted analogues. Furthermore, the laterally methyl-substituted derivatives were subjected to the planar alignment and their dielectric and electro-optic properties were investigated. The nematic phase of the aligned samples shows antiferroelectric switching behavior with spontaneous polarization, P-s similar to 5 mu C/cm(2). (C) 2021 Elsevier B.V. All rights reserved.
Computed Properties of C7H8O2. About Mequinol, If you have any questions, you can contact Kamal, SJ; Salleh, NM; Mahmud, HNME; Abdullah, I; Gopal, SR; Velayutham, TS; Zahid, NI or concate me.
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,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles