Abstract
Facile, exclusive end functionalization of poly(9,9-di-n-octylfluorene-2,7-vinylene) (PFV), prepared by acyclic diene metathesis polymerization using Ru(CHPh)(Cl)2(IMesH2)(PCy3) [IMesH2 = 1,3-bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene], has been achieved by treating the vinyl groups in PFV chain ends with Mo(CHCMe2Ph)(N-2,6-Me2C6H3)[OCMe(CF3)2]2 followed by Wittig-type cleavage with 4-Me3SiOC6H4CHO; precise synthesis of ABA type amphiphilic triblock copolymers has been accomplished by grafting PEG into both the PFV chain ends.
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