Novel Fluorous Amphiphilic Heteroleptic Ru-Based Complexes for a Dye-Sensitized Solar Cell: The First Fluorous Bis-ponytailed Amphiphilic Ru Complexes
摘要：
A new series of amphiphilic heteroleptic ruthenium(II) sensitizers with a fluorous bis-ponytailed bipyridine ancillary ligand, [Ru(H 2 dcbpy)(4,4′-bis(R f CH 2 OCH 2 )-2,2′-bpy)(NCS) 2 ] [where R f = HCF 2 CF 2 ( CT4 ), C 3 F 7 ( CT7 ), and HCF 2 CF 2 CF 2 CF 2 ( CT8 )], have been synthesized and fully characterized by UV/vis, visible emission, NMR, fast atom bombardment mass spectrometry, and cyclic voltammetric studies. Dye-sensitized solar cells (DSCs) based on these dyes exhibit efficiencies comparable with that of the standard cell based on N719 . The conversion efficiency of a CT7 - or CT8 -based DSC is 9% higher than that of Z907 with a nonfluorous bis-ponytailed bipyridine ancillary ligand. The fluorous chains were found to increase the dye density on TiO 2 and to help to suppress the dye desorption.
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年份：
2011
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