Cyanomolybdate Chemistry Design and Study of Inorganic Photochromic Systems.

摘要

The author's research directed toward the development of highly efficient, inorganic photochromic systems is described briefly. Initially, it was discovered that yellow, oxygen-free solutions of Mo(CN)7(4-) turn dark green upon photolysis with reversal occurring in the dark. It was established that added CN(-) inhibits formation of the photoproduct, whereas added acid slows the dark reaction. These results suggest that a primary photoreaction is loss of CN(-). The coordinatively unsaturated cyanomolybdate species probably dimerizes (or polymerizes) to one or more strongly absorbing complexes. In view of the likely nature of the key photoproduct in the above photochromic cycle, the spectroscopic properties of model metal-metal bonded and mixed-valence binuclear systems have been studied in detail.