“…PG is a naturally occurring polyphenol with low toxicity that has been widely used in photography, food, medicine, energy, and environmental fields. , Poly(ethylene glycol)s, available in a wide range of molecular weights, are considered green solvents due to their biocompatibility, low cost, negligible vapor pressure, and recyclability. , PG, with three adjacent hydroxyl groups on the benzene ring, is a white solid (Figure a), while PEG600, with 13–14 ethylene glycol units, is a transparent liquid at room temperature (Figure b). The freezing points obtained from the differential scanning calorimetry (DSC) curves of PG and PEG600 were 87.4 and 13.4 °C, respectively (Figure e and Table S1).…”