期刊
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
卷 2021, 期 2, 页码 284-288出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejoc.202001296
关键词
Calixarenes; Dyes; Pigments; Hydrogen; Photocatalysis; Sensitizers
资金
- Ministry of research and university (MIUR) [2017A5HXFC_002]
- University of Milano-Bicocca
- Italian Ministry of Instruction, University and Research (COMP-HUB initiative, Departments of Excellence Program)
- University of Trieste
- European Community [862030, 884444]
- INSTM consortium
- ICCOM-CNR
A new class of calix[4]arene-based molecular photosensitizers has been developed for photocatalytic production of hydrogen, offering twice larger performances compared to corresponding linear systems. This molecular design paves the way for a new strategy in photocatalytic hydrogen production, with the potential for more efficient systems and host-guest supramolecular effects afforded by the calix[4]arene scaffold.
In the field of direct production of hydrogen from solar energy and water, photocatalytic methods hold great potential especially when metal-free molecular components are preferred. In this work, we have developed a new class of calix[4]arene-based molecular photosensitizers to be used as antenna systems in the photocatalytic production of hydrogen. The structure of the dyes has a typical donor-pi-acceptor molecular architecture where a calix[4]arene scaffold is used as an embedded donor. The new materials have been fully characterized in their optical, electrochemical, and photocatalytic properties. The properties conferred by the calix[4]arene donor afforded twice larger performances compared to the corresponding linear system though showing similar quantitative optical properties. The new molecular design paves the way to a new strategy for photocatalytic hydrogen production where the calix[4]arene scaffold can afford more efficient systems and can offer the potential for host-guest supramolecular effects.
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