3 years ago

Controlled Synthesis of Poly(p-phenylene) Using a Zincate Complex, tBu4ZnLi2

Controlled Synthesis of Poly(p-phenylene) Using a Zincate Complex, tBu4ZnLi2
Tomoya Higashihara, Eisuke Goto, Yuto Ochiai
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 (tBu4ZnLi2). 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. Well-defined poly(2,5-dihexyloxyphenylene-1,4-diyl) (PPP) is successfully synthesized by Negishi catalyst-transfer polycondensation using dilithium tetra(tert-butyl)zincate. The PPP samples possess molecular weight values in the range of 2100–22 000 and molar mass dispersity values in the range of 1.09–1.23.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/marc.201700155

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