1 Department of Applied Chemistry, Faculty of Engineering, Kyushu University International Institute for Carbon Neutral Energy Research (I2CNER), Kyushu University Motooka 744, Nishi-ku, Fukuoka, 819-0395, Japan
In actual photosynthesis, Z scheme excitation is performed to separate electronic charge with high efficiency by using solar light. In this study, water splitting into
on dye modified
was investigated and it was found that
formation rate is much improved by dye modification. Charge separation mechanism was further studied with transient spectroscopy and this study reveals that photo excitation in Cr-tetraphenyl porphyrin
is analogous with Z scheme in photosynthesis and complete charge separation was achieved at room temperature.