A Pulse radiolysis study on the spectral shift of 4,4'-bpyH radical in supercritical water

Lin, M.; Katsumura, Yosuke; Muroya, Yusa*; Fu, H.*; Yamashita, Shinichi; Yan, Y.*

In the present work, we have investigated the optical absorption spectral shift of 4,4'-bipyridyl radical at elevated temperature and supercritical water. The results show that the spectral shift is mainly due to the change of water properties, especially the dielectric constant. Local density effect on the spectral shift has been also observed.