TY - JOUR ID - 158658 TI - Synthesis, Characterization, and Investigation of Mesogenic Properties of Bis(2-oxo-2H-Chromen-6-yl)Terephthalate and Bis(2-Oxo-2H-Chromen-7-yl)Terephthalate JO - Journal of Medicinal and Chemical Sciences JA - JMCS LA - en SN - AU - Abd, Aya Waleed AU - Jber, Nasreen AD - Chemistry Department, College of Science, Al-Nahrain University, Baghdad, Iraq Y1 - 2023 PY - 2023 VL - 6 IS - 4 SP - 803 EP - 808 KW - Coumarin KW - Mesomorphic KW - Nematic KW - Schiff`s bases DO - 10.26655/JMCHEMSCI.2023.4.11 N2 - The synthesis, characterization, and mesomorphic investigation of new liquid crystals are described. The goal was to synthesize esters starting with 6- and 7-hydroxycoumarin. The structures of the synthesized compounds were actually determined by FT-IR and 1H-NMR. The mesophase behavior of the synthesized compounds was characterized and investigated by using (DSC) differential scanning calorimetry and (POM) polarizing the optical microscopy. The mesophase transitions are enantiotropic, the peaks being sharp and the mesomorphic range wide. The synthesized compounds exhibit a nematic phase. UR - https://www.jmchemsci.com/article_158658.html L1 - https://www.jmchemsci.com/article_158658_0c5197c731b3a4a83f2a85e463eb9cb4.pdf ER -