Kiryong Hong

Static and transient differential X-ray absorption spectra were measured at the Ru L -edge (2.84 keV) and at the S K-edge (2.47 keV) of [Ru(bpy) (pyESO)]2+. Differential spectra were measured as a function of time delay following optical excitation of the 1MLCT transition, with time-resolution determined by the 70 ps X-ray pulse duration. Static absorption spectra representing the S-bonded species in its ground electronic state are shown in the top panels of Fig. 3a, b.