Three new β-substituted ZnII-tetraarylporphyrinate dyes (1–3), bearing octyloxy chains at the o,o-, o,p- or o-positions of the four phenyl groups respectively, were synthesized, characterized and investigated as sensitizers for DSSCs. In particular, the alkoxy group position strongly influences their electronic absorption and electrochemical features. Improvements in power conversion efficiency ranging from 40% to 80% were obtained with respect to a reference dye (4) characterized by the presence of sterically bulky t-butyl groups at the m-positions.

Highly improved performance of Zn-II tetraarylporphyrinates in DSSCs by the presence of octyloxy chains in the aryl rings / A. Orbelli Biroli, F. Tessore, V. Vece, G. Di Carlo, P.R. Mussini, V. Trifiletti, L. De Marco, R. Giannuzzi, M. Manca, M. Pizzotti. - In: JOURNAL OF MATERIALS CHEMISTRY. A. - ISSN 2050-7488. - 3:6(2015 Feb 14), pp. 2954-2959. [10.1039/C4TA05233A]

Highly improved performance of Zn-II tetraarylporphyrinates in DSSCs by the presence of octyloxy chains in the aryl rings

A. Orbelli Biroli;F. Tessore;V. Vece;G. Di Carlo;P.R. Mussini;M. Pizzotti
2015-02-14

Abstract

Three new β-substituted ZnII-tetraarylporphyrinate dyes (1–3), bearing octyloxy chains at the o,o-, o,p- or o-positions of the four phenyl groups respectively, were synthesized, characterized and investigated as sensitizers for DSSCs. In particular, the alkoxy group position strongly influences their electronic absorption and electrochemical features. Improvements in power conversion efficiency ranging from 40% to 80% were obtained with respect to a reference dye (4) characterized by the presence of sterically bulky t-butyl groups at the m-positions.
sensitized solar-cells; efficient porphyrin sensitizers; push-pull; substituted porphyrins; nonaqueous solvents; TIO2 sensitization; electron-transfer; liquid-crystals; dyes; dipyrromethanes
Settore CHIM/03 - Chimica Generale e Inorganica
3-dic-2014
Article (author)
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/263655
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