A Ruthenium‐Based Light‐Harvesting Antenna Bearing an Anthracene Moiety in Dye‐Sensitized Solar Cells. Issue 9 (14th July 2014)

• Record Type: Journal Article
• Authors: Vougioukalakis, Georgios C.; Konstantakou, Maria; Pefkianakis, Eleftherios K.; Kabanakis, Antonios N.; Stergiopoulos, Thomas; Kontos, Athanassios G.; Andreopoulou, Aikaterini K.; Kallitsis, Joannis K.; Falaras, Polycarpos
• Is Part Of: Asian journal of organic chemistry. Volume 3:Issue 9(2014:Sep.)
• Page Start: 953
• Page End: 962
• Publication Date: 2014-07-14
• Subjects: Chemistry, Organic -- Periodicals; Organic compounds -- Synthesis -- Periodicals; 547.005
• DOI: 10.1002/ajoc.201402096
• Languages: English
• ISSNs: 2193-5807

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>A heteroleptic ruthenium sensitizer (<bold>DV56</bold>) bearing a terpyridine ligand with an appended phenylanthracene moiety was synthesized and extensively characterized. The physicochemical properties of the light‐harvesting antenna were studied in solution and on sensitized TiO₂ thin film electrodes using a variety of spectroscopic and photoelectrochemical techniques. Contact angle measurements suggest that the <bold>DV56</bold>‐sensitized TiO₂ films are hydrophilic. Raman measurements indicate chemisorption of the dye on the semiconducting surface. Electrochemical studies of the dye show that its first oxidation potential lies well below the I⁻/I₃⁻ redox potential, allowing easy regeneration. Moreover, its excited state oxidation potential lies above the TiO₂ conduction band edge, permitting efficient electron injection from the photosensitizer into the semiconductor. I⁻/I₃⁻‐based liquid redox electrolyte dye‐sensitized solar cells incorporating <bold>DV56</bold>‐sensitized TiO₂ photoelectrodes afford an overall power conversion efficiency of 3.75 %.</p> </abstract>