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To develop new conjugated polymers (CPs) based on heteroepines, a soluble azepine moiety of benzo [d]-dithieno [3,2-b; 2′,3′-f]azepine was copolymerized with different building blocks to obtain a series of CPs. A broad absorption range of 300–850 nm and the desired optical bandgaps (1.54–2.42 eV) are easily accessible by varying different copolymerization units. The HOMO levels of polymers are observed...
Three low bandgap conjugated copolymers (PB-DPP, PDFB-DPP, and PTFB-DPP) based on 1,4-dithienylphenylene and diketopyrrolopyrrole units were synthesized and characterized as the donor materials for polymer solar cells. The effect of the number of fluorine atoms on thermodynamic, crystalline, physicochemical and photovoltaic properties of the copolymers was comparatively investigated. Results indicate...
A series of donor-acceptor (D-A) conjugated copolymers (PBDTNT, PCDTNT, PFDTNT, and PNDTNT) based on a new acceptor unit of 4,9-dithien-2′-yl-2,1,3-naphthothiadiazole (DTNT) and different donor unit of benzodithiophene, carbazole, fluorene, or naphthalene, were synthesized and characterized as donor in polymer solar cells (PSCs). The effect of different donor units on the physicochemical properties...
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