Photoelectrochemical sensor with porphyrin-deposited electrodes for determination of nucleotides in water.

A 5,10,15,20-tetra(4-pyridyl)porphyrin (TPyP)-deposited ITO electrode as a sensor of nucleotides using photocurrent change was prepared. The TPyP-deposited ITO electrode could repeatedly detect nucleotides having concentrations of the microM order by a decrease in the photocurrent.