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Nickel(II) α-Diimine Catalyst for Grignard Metathesis (GRIM) Polymerization

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Abstract

A nickel α-diimine catalyst was used for Grignard metathesis (GRIM) polymerization of 2,5-dibromo 3-hexylthiophene and 2-bromo-5-iodo-3-hexylthiophene monomers. GRIM polymerization of 2-bromo-5-iodo-3-hexylthiophene generated regioregular polymers with molecular weights ranging from 3 000 to 12 000 g · mol−1. The nickel α-diimine catalyst was also successfully used for the GRIM polymerization of a bulky benzodithiophene monomer.

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