PESOL (70 g, 32 mmol), MEG (4.4 g, 70 mmol) and 1,4-diazabicyclo[2.2.2]octane (DABCO, 25 mg, 0.01 wt %) were mixed in a 200 mL beaker ... dimethyl ester), and 4,4′-MDA). These monomers serve as ...