Synthesis and Spectral Characterization of Bio-compatible Copolyester using 1, 4 Cyclohexane Diol

A Computational Study on the Antioxidant Activity of Certain Random Copolyesters Containing Bis(arylidene) Cycloalkanone Moiety in the Main Chain

“…Sokmen reported on the antioxidant activity of some curcuminoids and chalcones by DPPH assay [20]. Yamini and coworkers reported on antioxidant activity by the DPPH method for copolyesters synthesized from 1,4cyclohexane diol, PEG 400, and dodecanedioic acid in the presence of Titanium (IV) isopropoxide as catalyst [21]. Even though a small fraction of the -CH 2 group in the curcumin structure is responsible for antioxidant activity, the number and position of hydrogen-donating phenolic hydroxyl groups are mainly responsible for the radical-scavenging activity via the HAT mechanism, i.e., (Hydrogen atom transfer) mechanism [22,23], i.e., donation of the hydrogen atoms from the phenolic group especially the ortho-methoxy phenolic OH group is required for antioxidant activity rather than SET mechanism, i.e., single electron transfer which is essential in the prevention of oxidative stress-related diseases [24].…”