3-Chloro-2-(chloromethyl)-1-propene (CCMP) was synthesized and used to initiate atom transfer radical polymerization (ATRP) of styrene catalyzed by copper (Ⅰ) chloride/2

2′-bipyridine at 125℃.As a difunctional initiator

CCMP can initiate ATRP of styrene with two living end sites at the same time.The structure of the obtained α

ω-chloropolystyrene was confirmed by 1H-NMR spectra.The living character of the ATRP process is indicated by narrow molecular weight distributions of the obtained polystyrene (Mw/Mn1.5)

a linear ln(［M］0/［M］) versus time profile and predictable molecular weights proportional to monomer conversion.