Chemistry on the electrodes: post-functionalization and stability enhancement of anchored dyes on mesoporous metal oxide photoelectrochemical cells with copper-free Huisgen cycloaddition reaction
| Autor: | Dorine Ameline, Yousra Bentounsi, Yann Pellegrin, David Provost, Eric Vauthey, Fabrice Odobel, Damien Cossement, Stéphane Diring, Konstantinos Seintis, Errol Blart |
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| Přispěvatelé: | Chimie Et Interdisciplinarité : Synthèse, Analyse, Modélisation (CEISAM), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Université de Genève (UNIGE) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Oxide
02 engineering and technology 010402 general chemistry 01 natural sciences 7. Clean energy chemistry.chemical_compound dye-sensitized solar cell General Materials Science crosslinking Triiodide surface functionalization Renewable Energy Sustainability and the Environment [CHIM.ORGA]Chemical Sciences/Organic chemistry technology industry and agriculture General Chemistry [CHIM.MATE]Chemical Sciences/Material chemistry Photoelectrochemical cell 021001 nanoscience & nanotechnology 0104 chemical sciences Dye-sensitized solar cell chemistry Chemical engineering ddc:540 click chemistry Click chemistry photoelectrochemical cell Surface modification Cyclic voltammetry 0210 nano-technology Mesoporous material |
| Zdroj: | Journal of Materials Chemistry A Journal of Materials Chemistry A, Royal Society of Chemistry, 2020, 8 (25), pp.12633-12640. ⟨10.1039/D0TA04982D⟩ Journal of Materials Chemistry A, Vol. 8, No 25 (2020) pp. 12633-12640 |
| ISSN: | 2050-7488 |
| DOI: | 10.1039/D0TA04982D⟩ |
| Popis: | International audience; Hybrid materials consisting of nanocrystalline metal oxide films coated with molecules have considerable implications for the development of optoelectronic devices. We report on a straightforward and versatile procedure to engineer stable layers made of molecules chemisorbed on the surface of mesoporous inorganic metal oxides. The procedure is based on a thermal copper-free Huisgen reaction, which is directly conducted on TiO2 or NiO nanocrystalline films, between already bound diketopyrrolopyrrole sensitizers substituted by two azido groups and a crosslinking agent consisting of a tetrapropiolate ester. The procedure is mild and simple and does not require a catalyst, since quantitative conversion is obtained by a simple heating of the photoelectrode into a solution of the crosslinking agent. The photoelectrodes were characterized by ToF-SIMS, femtosecond transient absorption spectroscopy, electrochemistry and were finally used to fabricate dye-sensitized solar cells with iodide/triiodide and cobalt trisbipyridine complexes as redox mediators. Important increased stability of the crosslinked films was demonstrated by desorption and cyclic voltammetry experiments. Transient absorption spectroscopy and photovoltaic measurements showed that the dyes keep their initial photoelectrochemical properties upon crosslinking. This bottom-up approach is certainly broadly applicable and opens the possibility to make “chemistry on the electrode” to functionalize and crosslink dyes with any component. |
| Databáze: | OpenAIRE |
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