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Controlled Synthesis of Poly(p-phenylene) Using a Zincate Complex, t Bu4 ZnLi2
Yuto Ochiai1, Eisuke Goto1, Tomoya Higashihara1
1Graduate School of Organic Materials Science, Yamagata University, 4-3-16, Jonan, 992-8510, Japan.
Abstract:
Well-defined poly(2,5-dihexyloxyphenylene-1,4-diyl) (PPP) is successfully synthesized by the Negishi catalyst-transfer polycondensation (NCTP) using dilithium tetra(tert-butyl)zincate (t Bu4 ZnLi2 ). The obtained PPP possesses the number-averaged molecular weight (Mn ) values in the range of 2100-22 000 and the molar-mass dispersity (ÐM ) values in the range of 1.09-1.23. In addition, block copolymers containing PPP and poly(3-hexylthiophene) (P3HT) segments (PPP-b-P3HT) are synthesized to confirm the feasibility of chain extension between the different monomers based on NCTP.
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