Fluorous molecules for dye-sensitized solar cells: synthesis and properties of di-branched, di-anchoring organic sensitizers containing fluorene subunits

摘要: Four organic sensitizers having a di-branched molecular structure D–(π–A)2 (D = para-substituted arylamine, π 9,9-dibutylfluorene, A cyanoacrylic acid) were synthesized, characterized, and applied in the development of dye-sensitized solar cells (DSSCs). It was found that nature para-substituent affects behavior these sensitizers. In particular, introduction C11 linear fluorous alkoxy group led to an improvement power conversion efficiency with respect commonly employed nonfluorous substituents.