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Issue 6, 2020
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A thiophene bridged naphthalimide–porphyrin complex with enhanced activity and stability in photocatalytic H2 evolution

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Abstract

More efficient intramolecular energy transfer in the naphthalimide–porphyrin complex, ZnT(p-NI)TP, is accomplished by an electron rich coplanar thiophene π-linkage compared to the analogous porphyrin ZnT(p-NI)PP bearing a less coplanar phenylene π-linker. As a result, ZnT(p-NI)TP shows enhanced light-harvesting ability, electron lifetime and photoinduced charge carrier separation compared to ZnT(p-NI)PP and this boosted electron transfer from the photoexcited porphyrin moiety to the proton reduction catalyst, consequently, resulting in a 2.9 fold higher hydrogen evolution rate (ηH2) of ZnT(p-NI)TP (4.28 mmol g−1 h−1) than ZnT(p-NI)PP (1.50 mmol g−1 h−1). ZnT(p-NI)TP is also much more photostable than ZnT(p-NI)PP and continued to show hydrogen evolution for up to 50 h.

Graphical abstract: A thiophene bridged naphthalimide–porphyrin complex with enhanced activity and stability in photocatalytic H2 evolution

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Supplementary files

Article information


Submitted
05 Mar 2020
Accepted
02 Apr 2020
First published
17 Apr 2020

Sustainable Energy Fuels, 2020,4, 2675-2679
Article type
Communication

A thiophene bridged naphthalimide–porphyrin complex with enhanced activity and stability in photocatalytic H2 evolution

G. B. Bodedla, G. Tang, J. Zhao and X. Zhu, Sustainable Energy Fuels, 2020, 4, 2675
DOI: 10.1039/D0SE00356E

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