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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 Wang, Mingfeng |
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 http://hdl.handle.net/10220/24513 |
DOI: | 10.1039/C4PY00565A | Rights: | This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
Appears in Collections: | SCBE Journal Articles |
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