3, 4-Ethylenedioxythiophene (EDOT) and 3, 4-ethylenedithiathiophene (EDTT) as terminal blocks for oligothiophene dyes for DSSCs. Issue 43 (26th October 2016)

• Record Type: Journal Article
• Authors: Demeter, Dora; Melchiorre, Fabio; Biagini, Paolo; Jungsuttiwong, Siriporn; Po, Riccardo; Roncali, Jean
• Is Part Of: Tetrahedron letters. Volume 57:Issue 43(2016)
• Page Start: 4815
• Page End: 4820
• Publication Date: 2016-10-26
• Subjects: Dye-sensitized solar cells -- Oligothiophene -- 3, 4-Ethylenedioxythiophene -- 3, 4-Ethylenedithiathiophene; Chemistry, Organic -- Periodicals; 547.005
• DOI: 10.1016/j.tetlet.2016.09.053
• Languages: English
• ISSNs: 0040-4039

Abstract

Graphical abstract: Highlights: Synthesis of metal-free sensitizers for dye-sensitized solar cells. Analysis of the effect of the structure of the terminal thiophenic ring. Replacement of EDOT by EDTT leads to a noticeable improvement in conversion efficiency. Abstract: Thiophene pentamers with a cyanoacrylic acid anchoring group at one end and 3, 4-ethylenedioxythiophene (EDOT) or 3, 4-ethylenedithiathiophene (EDTT) units at the other end have been synthesized. Preliminary evaluation in DSSCs with a iodide/triiodide liquid electrolyte shows that in spite of the very close electronic properties of the two dyes, replacing EDOT by EDTT leads to a noticeable improvement of conversion efficiency under simulated solar light.