Equally important, we also applied the coin cell of PGC in the actual situation which lit up 38 LEDs on the breadboard. Meanwhile, the pointed peak at 1,633 cm -1 is related to the C=C stretching vibration. On the other hand, the absorption peaks situated at 1,242 and 1,050 cm -1 are ascribed to the epoxy C-O stretching vibrations and alkoxy C-O stretching vibrations, respectively. Moreover, the peak at 1,385 cm -1 derived from the bending vibration of O-H groups .