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Open AccessArticle

Dicyanovinyl and Cyano-Ester Benzoindolenine Squaraine Dyes: The Effect of the Central Functionalization on Dye-Sensitized Solar Cell Performance

1
NIS and INSTM Reference Centre, Department of Chemistry, University of Torino, Via Pietro Giuria 7, Torino 10125, Italy
2
Laboratoire de Réactivité et Chimie du Solide (UMR-CNRS 7314), Université de Picardie Jules Verne, 33 Rue Saint-Leu, Amiens Cedex 80039, France
3
Institut de Chimie de Picardie (FR CNRS 3085), Amiens Cedex 80039, France
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Dipartimento di Scienze Agrarie, Forestali e Alimentari, University of Torino, Largo Paolo Braccini 2, Grugliasco 10095, Italy
*
Authors to whom correspondence should be addressed.
Academic Editor: Tapas Mallick
Energies 2016, 9(7), 486; https://doi.org/10.3390/en9070486
Received: 12 April 2016 / Revised: 6 June 2016 / Accepted: 17 June 2016 / Published: 23 June 2016
(This article belongs to the Special Issue Dye Sensitized Solar Cells)
In order to achieve a greater light absorption in the near-infrared (NIR) region with a panchromatic spectral response and to suppress the photo-isomerisation phenomenon, we herein report the design, synthesis, spectroscopic and electrochemical characterization of novel centrally functionalized symmetric benzoindolenine squaraine dyes. These molecules have shown different photoelectrical conversion properties, depending on the dicyanovinyl and cyano-ester group substitution on the squaric core unit and on the extension of the π-conjugation. View Full-Text
Keywords: dye-sensitized solar cells; NIR-sensitizers; squaraines; central functionalization dye-sensitized solar cells; NIR-sensitizers; squaraines; central functionalization
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Galliano, S.; Novelli, V.; Barbero, N.; Smarra, A.; Viscardi, G.; Borrelli, R.; Sauvage, F.; Barolo, C. Dicyanovinyl and Cyano-Ester Benzoindolenine Squaraine Dyes: The Effect of the Central Functionalization on Dye-Sensitized Solar Cell Performance. Energies 2016, 9, 486.

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