Visible‐Light‐Driven Hydrogen Evolution Using Planarized Conjugated Polymer Photocatalysts |
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| Authors: | Dr. Reiner Sebastian Sprick Dr. Baltasar Bonillo Rob Clowes Pierre Guiglion Nick J. Brownbill Dr. Benjamin J. Slater Dr. Frédéric Blanc Dr. Martijn A. Zwijnenburg Prof. Dave J. Adams Prof. Andrew I. Cooper |
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| Affiliation: | 1. Department of Chemistry and Centre for Materials Discovery, University of Liverpool, Liverpool, UK;2. Department of Chemistry, University College London, London, UK;3. Stephenson Institute for Renewable Energy, University of Liverpool, Liverpool, UK |
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| Abstract: | Linear poly(p‐phenylene)s are modestly active UV photocatalysts for hydrogen production in the presence of a sacrificial electron donor. Introduction of planarized fluorene, carbazole, dibenzo[b,d]thiophene or dibenzo[b,d]thiophene sulfone units greatly enhances the H2 evolution rate. The most active dibenzo[b,d]thiophene sulfone co‐polymer has a UV photocatalytic activity that rivals TiO2, but is much more active under visible light. The dibenzo[b,d]thiophene sulfone co‐polymer has an apparent quantum yield of 2.3 % at 420 nm, as compared to 0.1 % for platinized commercial pristine carbon nitride. |
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| Keywords: | conjugated polymer extended conjugation photocatalysis planarization water splitting |
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