A general new route to well-defined polymeric Lewis acids via borylation of silylated polymers is reported. Trimethylsilylated polystyrene (PS-Si) of controlled molecular weight and low polydispersity (PDI < 1.15) was obtained via atom transfer radical polymerization (ATRP) of 4-(trimethylsilyl)styrene. The functional polymer PS-Si was quantitatively borylated using BBr3 to give poly(4-dibromoborylstyrene)
Organoboronium-functionalized polystyrenes as a new class of polycations
作者:Chengzhong Cui、Frieder Jäkle
DOI:10.1039/b902644d
日期:——
The facile preparation of organoboronium polymersvia spontaneous reaction of bromoborylated polystyrene with 2,2′-bipyridine is reported; these novel polycations represent an interesting alternative to commonly used ammonium-based polycations.