Nanosized palladium-catalyzed Suzuki–Miyaura coupling polymerization: synthesis of soluble aromatic poly(ether ketone)s

Abstract

Nanosized palladium species, which were prepared in situ from Pd(OAc)2, PPh3 and Bu4NOAc in 1,4-dioxane, were suitable for the synthesis of 1,1′-binaphthyl-2,2′-dioxy-bearing aromatic poly(ether ketone)s 5. The resulting poly(ether ketone)s 5 are soluble in typical organic solvents, such as CHCl3, tetrahydrofuran and N,N-dimethylformamide. Glass transition temperatures (Tg′s) of poly(ether ketone)s 5 are in the range of 188–224 °C. Temperatures where 10% weight losses of poly(ether ketone)s 5 occur under N2 flow are in the range of 445–480 °C.