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Increased solar-driven chemical transformations through surface-induced benzoperylene aggregation in dye-sensitized photoanodes.
Bruggeman, Didjay F; Detz, Remko J; Mathew, Simon; Reek, Joost N H.
Afiliação
  • Bruggeman DF; Homogeneous, Supramolecular and Bioinspired Catalysis, van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands.
  • Detz RJ; Energy Transition Studies, Netherlands Organization for Applied Scientific Research (TNO), Radarweg 60, Amsterdam, The Netherlands.
  • Mathew S; Homogeneous, Supramolecular and Bioinspired Catalysis, van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands.
  • Reek JNH; Homogeneous, Supramolecular and Bioinspired Catalysis, van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands. j.n.h.reek@uva.nl.
Photochem Photobiol Sci ; 23(3): 503-516, 2024 Mar.
Article em En | MEDLINE | ID: mdl-38363531
ABSTRACT
The impact of benzo[ghi]perylenetriimide (BPTI) dye aggregation on the performance of photoelectrochemical devices was explored, through imide-substitution with either alkyl (BPTI-A, 2-ethylpropyl) or bulky aryl (BPTI-B, 2,6-diisopropylphenyl) moieties, to, respectively, enable or suppress aggregation. While both dyes demonstrated similar monomeric optoelectronic properties in solution, adsorption onto mesoporous SnO2 revealed different behavior, with BPTI-A forming aggregates via π-stacking and BPTI-B demonstrating reduced aggregation in the solid state. BPTI photoanodes were tested in dye-sensitized solar cells (DSSCs) before application to dye-sensitized photoelectrochemical cells (DSPECs) for Br2 production (a strong oxidant) coupled to H2 generation (a solar fuel). BPTI-A demonstrated a twofold higher dye loading of the SnO2 surface than BPTI-B, resulting in a fivefold enhancement to both photocurrent and Br2 production. The enhanced output of the photoelectrochemical systems (with respect to dye loading) was attributed to both J- and H- aggregation phenomena in BPTI-A photoanodes that lead to improved light harvesting. Our investigation provides a strategy to exploit self-assembly via aggregation to improve molecular light-harvesting and charge separation properties that can be directly applied to dye-sensitized photoelectrochemical devices.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Photochem Photobiol Sci Assunto da revista: BIOLOGIA / QUIMICA Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Holanda País de publicação: Reino Unido

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Photochem Photobiol Sci Assunto da revista: BIOLOGIA / QUIMICA Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Holanda País de publicação: Reino Unido