Sonogashira coupling of diethynylsilane and dibromoarene in wet solvent for the formation of poly[(ethynylenearylene)-co-(diethynylenesilylenearylene)]

摘要

Copolymerization of diethynylsilane and dibromoarene by Sonogashira coupling was investigated. Polymerization in dry triethylamine gave poly(diethynylsilylenearylene)s, while in wet triethylamine, hydrolytic desilylation competed to afford polymers containing extended ethynylene-arylene units in the backbone. The resulting polymers exhibited hole-transporting properties in the solid state, being applicable to EL device materials. (c) 2005 Elsevier B.V. All rights reserved.