Issue 6, 2020

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

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

Supplementary files

Article information

Article type
Communication
Submitted
05 Mar 2020
Accepted
02 Apr 2020
First published
17 Apr 2020

Sustainable Energy Fuels, 2020,4, 2675-2679

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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