Direct arylation polycondensation

Facchetti, A., Vaccaro, L, Marrocchi, A., 2012. Semiconducting polymers prepared by direct arylation polycondensation. Angew. Chem. Int. Ed. 51,3520-3523. 

Direct arylation polycondensation as simplified alternative for the synthesis of conjugated (co)polymers 13PPS1805. 

For it to be a reliable synthetic methodology with a wide application range, there are still several problems related to direct arylation polycondensation reactions that need to be solved. First, the low molecular weight of the... 

A series of DTDPP-based copolymers with an alternating D-A sequence and homopolymer P32 were synthesized by the direct arylation polycondensation. The polymer was endowed with the common features of excellent ir-conjuga-tion and ideal planarity, which lead to remarkably low band gaps (1.22 eV). Photovoltaic properties of these polymers were not reported (Scheme 1.33). ... 

Direct arylation polycondensation using the phosphine-free catalytic system can be adapted to the synthesis of bithiazole-based alternating copolymers (P34). In comparison with conventional polycondensation via other cross-coupling reactions, the polycondensation proceeded with a reduced amount of Pd catalyst (2 mol%) in a short reaction time (10 min to 3 h). Owing to the differenee in reactivity of the C-H bond, controlling the reaction time was effective for suppressing the side reaetion at the unexpeeted C-H bond (Scheme 1.35). ... 

J. Kuwabara, Y. Nohara, S. J. Choi, Y. Fujinami, W. Lu, K. Yoshimura, J. Oguma, K. Suenobu and T. Kanbara, Direct arylation polycondensation for the synthesis of bithiophene-based alternating eopolymers, Polym. Chem., 2013,4(4), 947-953. 

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