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|Title:||Synthesis of donor-acceptor conjugated polymers based on benzo[1,2-b:4,5-b′]dithiophene and 2,1,3-benzothiadiazole via direct arylation polycondensation : towards efficient C-H activation in nonpolar solvents||Authors:||Wang, Xiaochen
|Keywords:||DRNTU::Science::Chemistry::Organic chemistry::Polymers||Issue Date:||2014||Source:||Wang, X., & Wang, M. (2014). Synthesis of donor-acceptor conjugated polymers based on benzo[1,2-b:4,5-b′]dithiophene and 2,1,3-benzothiadiazole via direct arylation polycondensation : towards efficient C-H activation in nonpolar solvents. Polymer chemistry, 5(19), 5784-5792.||Series/Report no.:||Polymer chemistry||Abstract:||This article describes the synthesis of donor–acceptor (D–A) type copolymers based on benzo[1,2-b:4,5-b′]dithiophene and 2,1,3-benzothiadiazole via direct-arylation cross-coupling polycondensation. To achieve high performance polymerization, we have systematically investigated the reaction factors including catalysts, solvents, ligands, bases, additives, concentration of reactants and phase transfer agents. In particular, 1,2-dimethylbenzene (ODMB), as a nonpolar high boiling point solvent, is a superior medium to perform this direct-arylation polymerization. In this nonpolar aromatic solvent, Pd2dba3/(o-MeOPh)3P, accompanied with a base potassium carbonate and an additive pivalic acid, serves as an efficient catalyst system to obtain high-quality polymers. Our optimized condition gave the polymer with a weight-average molecular weight (Mw) as high as 60 kg mol−1 in nearly quantitative yield and excellent C–H selectivity.||URI:||https://hdl.handle.net/10356/103451
|DOI:||http://dx.doi.org/10.1039/C4PY00565A||Rights:||This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.||metadata.item.grantfulltext:||open||metadata.item.fulltext:||With Fulltext|
|Appears in Collections:||SCBE Journal Articles|
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