Synthesis and characterization of fluorinated azadipyrromethene complexes as acceptors for organic photovoltaics.

ABSTRACT: Homoleptic zinc(II) complexes of di(phenylacetylene)azadipyrromethene (e.g., Zn(WS3)₂) are potential non-fullerene electron acceptors for organic photovoltaics. To tune their properties, fluorination of Zn(WS3)₂ at various positions was investigated. Three fluorinated azadipyrromethene-based ligands were synthesized with fluorine at the para-position of the proximal and distal phenyl groups, and at the pyrrolic phenylacetylene moieties. Additionally, a CF₃ moiety was added to the pyrrolic phenyl positions to study the effects of a stronger electron withdrawing unit at that position. The four ligands were chelated with zinc(II) and BF₂⁺ and the optical and electrochemical properties were studied. Fluorination had little effect on

SUBMITTER: Etheridge FS 

PROVIDER: S-EPMC5082603 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature