Pure Appl. Chem., 2006, Vol. 78, No. 7, pp. 1407-1411
http://dx.doi.org/10.1351/pac200678071407
Synthesis of transition-metal-containing poly(pyrazabole)s
Abstract:
Novel organoboron polymers containing transition metals (Ni, Pd, Pt) and pyrazaboles in the main chain were prepared by Cu-catalyzed coupling polymerization. The Ni- and Pt-containing polymers showed MLCT (metal-to-ligand charge transfer) absorption, whereas the Pd-containing polymer did not demonstrate the absorption. Only the Pd-containing polymer exhibited the emission spectrum with a vibronic structure. These differences in the optical properties were studied in detail.
Keywords
Heck-Sonogashira coupling; optical properties; organoboron polymers; pyrazaboles; transition metals.