[1,2,5]Thiadiazolo[3,4-d]pyridazine as an internal acceptor in the D-A-π-A organic sensitizers for dye-sensitized solar cells
Four new D-A-π-A metal-free organic sensitizers for dye-sensitized solar cells (DSSCs), with [1,2,5]thiadiazolo[3 ,4-d]pyridazine as internal acceptor, thiophene unit as π-spacer and cyanoacrylate as anchoring electron acceptor, have been synthesized. The donor moiety was introduced into [1,2,5]thiadiazolo[3,4-d]pyridazine by nucleophilic aromatic substitution and Suzuki cross-coupling reactions, allowing design of D-A-π-A sensitizers with the donor attached to the internal heterocyclic acceptor not only by the carbon atom, as it is in a majority of DSSCs, but by the nitrogen atom also. Although low values of power conversion efficiency (PCE) were found, a few important consequences were identified: (i) poor PCE data can be attributed to high electron deficiency of the internal [1,2,5]thiadiazolo[3,4-d]pyridazine acceptor due to lower light harvesting by the dye; (ii) the manner in which the donor was attached to the internal acceptor (by carbon or nitrogen) did not play an essential role in the photovoltaic properties of the dyes; (iii) dyes based on the novel donor 2,3,4,4a,9,9a-hexahydro-1H-1,4-methanocarbazolyl and 9-(p-tolyl)-2,3,4,4a,9,9a-hexahydro-1H- carbazole moieties showed similar photovoltaic properties to dyes based on the well-known 4-(p-tolyl)-1,2,3,3a,4,8b-hexahydrocyclopenta[b]indolyl building block, which opens the door for further optimization potential of new dye families.
Citations by journals
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MolBank
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Journal of Photochemistry and Photobiology A: Chemistry
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Journal of Chemical Research
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Journal of Computational Electronics
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Dyes and Pigments
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Dyes and Pigments
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Journal of Structural Chemistry
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Journal of Structural Chemistry
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Progress in Heterocyclic Chemistry
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Progress in Heterocyclic Chemistry
1 publication, 4.55%
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Synthesis
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Synthesis
1 publication, 4.55%
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ACS Omega
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ACS Omega
1 publication, 4.55%
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ACS Applied Electronic Materials
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ACS Applied Electronic Materials
1 publication, 4.55%
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Citations by publishers
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Elsevier
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Elsevier
7 publications, 31.82%
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Multidisciplinary Digital Publishing Institute (MDPI)
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Multidisciplinary Digital Publishing Institute (MDPI)
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Springer Nature
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Springer Nature
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American Chemical Society (ACS)
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American Chemical Society (ACS)
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SAGE
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SAGE
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Pleiades Publishing
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Pleiades Publishing
1 publication, 4.55%
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Thieme
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Thieme
1 publication, 4.55%
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