Synthesis and absorption properties of small-molecule acceptor based rich-electronic benzodiselenophene core with hybrid bromination and fluorination end-group
Abstract:At present, dihalogenated 1, 1-dicyanomethylene-3-indanone (IC) have attracted widely attention as terminal unit. Here, our work designed and synthesized a new nonfullerene small molecule acceptor material BDSe-FBr, with simultaneously fluorinated and brominated terminal. Due to that bromine atom has more electrons and larger size, and fluorine atom enhanced intermolecular π-π packing, BDSe-FBr present strong absorption abilities in solution and film. It shows a broad absorption range of 600–800 nm and 700– 90… Show more
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