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Tytuł:
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Design, Molecular Modeling and Synthesis of Metal-Free Sensitizers of Thieno Pyridine Dyes as Light-Harvesting Materials with Efficiency Improvement Using Plasmonic Nanoparticles.
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Autorzy:
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Khalifa ME; Department of Chemistry, Faculty of Science, Taif University, Taif 21974, Saudi Arabia.
Almalki ASA; Department of Chemistry, Faculty of Science, Taif University, Taif 21974, Saudi Arabia.
Merazga A; Department of Physics, Faculty of Science, Taif University, Taif 21974, Saudi Arabia.
Mersal GAM; Department of Chemistry, Faculty of Science, Taif University, Taif 21974, Saudi Arabia.; Department of Chemistry, Faculty of Science, South Valley University, Qena 83523, Egypt.
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Źródło:
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Molecules (Basel, Switzerland) [Molecules] 2020 Apr 15; Vol. 25 (8). Date of Electronic Publication: 2020 Apr 15.
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Original Publication: Basel, Switzerland : MDPI, c1995-
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MeSH Terms:
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Models, Molecular*
Coloring Agents/*chemistry
Metals/*chemistry
Nanoparticles/*chemistry
Pyridines/*chemistry
Algorithms ; Electrochemistry ; Metal Nanoparticles/chemistry ; Models, Chemical ; Molecular Conformation ; Pyridines/chemical synthesis ; Spectrum Analysis
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References:
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Contributed Indexing:
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Keywords: HOMO-LUMO; dye-sensitized solar cells; metal nanoparticle; organic sensitizers; plasmonic; tetrahydrobenzothiophenes; thienopyridine
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Substance Nomenclature:
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0 (Coloring Agents)
0 (Metals)
0 (Pyridines)
0 (thieno(2,3-b)pyridine)
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Entry Date(s):
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Date Created: 20200425 Date Completed: 20210119 Latest Revision: 20210119
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Update Code:
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20240105
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PubMed Central ID:
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PMC7221727
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DOI:
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10.3390/molecules25081813
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PMID:
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32326499
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Considering the thiophene unit as an electron-rich heterocycle, it is investigated with the aim of elucidating its potential efficiency for solar cell application. With the introduction of active substituents such as COOEt, CONH 2 and CN into the thiophene segment, three novel thieno pyridine sensitizers ( 6a - c ), based on donor-acceptor D-π-A construction, are designed and synthesized. The effect of the anchoring groups is investigated based on their molecular orbital's (MO's) energy gap (E g ). The electrostatic interaction between the synthesized dyes and metal nanoparticles, namely gold, silver and ruthenium, is believed to improve their performance as organic sensitizers. The dye-sensitized solar cells (DSSCs) are manufactured using the novel diazenyl pyridothiophene dyes, along with their metal nanoparticles conjugates as sensitizers, and were examined for efficiency improvement. Accordingly, using this modification, the photovoltaic performance was significantly improved. The promising results of conjugate ( 6b /AgNPs), compared with reported organic and natural sensitizers ( J SC (1.136 × 10 -1 mA/cm 2 ), V OC (0.436 V), FF (0.57) and η (2.82 × 10 -2 %)), are attributed to the good interaction between the amide, methyl, amino and cyano groups attached to the thiophene pyridyl scaffolds and the surface of TiO 2 porous film. Implementation of a molecular modeling study is performed to predict the ability of the thiophene moiety to be used in solar cell applications.
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