Photobleaching of Photogemreg;: A Spectroscopic Study in Solution

摘要

We have performed an experiment to investigate the degradation of the photosensitizer Photogem® in solution. The investigation was carried out at 630 nm diode laser for different intensities. The light degradation considered was from light that could cause modification of the solution fluorescence spectra under excitation of 535 nm. Knowing the degradation rate as a function of intensity, one can infer the rate of degradation during PDT application and its process efficiency loss.