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

PECNIKAJ, ILIR; MINUDRI, DANIELA; OTERO, LUIS; FUNGO, FERNANDO; CAVAZZINI, MARCO; ORLANDI, SIMONETTA; POZZI, GIANLUCA

NEW JOURNAL OF CHEMISTRY

ROYAL SOC CHEMISTRY

Lugar: CAMBRIDGE; Año: 2017 vol. 41 p. 7729 - 7738

1144-0546

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 the nature of the para-substituent affects the behavior of these sensitizers. In particular, the introduction of a C11 linear fluorous alkoxy group led to an improvement in the power conversion efficiency with respect to the commonly employed nonfluorous alkoxy substituents