PHOTOELECTRIC CONVERSION PERFORMANCE OF WATER-SOLUBLE PALLADIUM-PORPHYRIN/GRAPHENE OXIDE NONCOVALENT COMPOSITES

We synthesize a phosphor by combining trimethylammonium tetraphenyl porphyrin with palladium (II), obtaining Pd-TTAP, and investigate its interaction with graphene oxide (GO). Pd-TTAP and GO are found to be noncovalently bonded, according to high-resolution transmission electron microscopy (HR-TEM), ultraviolet-visible spectroscopy (UV-Vis), room temperature phosphorescence spectroscopy (RTP), Raman spectroscopy, and infrared spectroscopy (IR). The binding constant is 2.32 x 10(4) M-1, calculated using the Benesi-Hildebrand method, and a photoelectric response test finds that photo-induced electrons are transferred from the triplet excited state of Pd-TTAP to GO under visible light excitation. Our results demonstrate that Pd-TTAP can serve as an eff ective energy donor, with GO as an electron acceptor, in photoelectric conversion systems.