TY - JOUR
T1 - A Ruthenium Complex–Porphyrin–Fullerene-Linked Molecular Pentad as an Integrative Photosynthetic Model
AU - Yamamoto, Masanori
AU - Föhlinger, Jens
AU - Petersson, Jonas
AU - Hammarström, Leif
AU - Imahori, Hiroshi
N1 - Funding Information:
This work was supported by a Grant-in-Aid (JP25220801 to H.I. and 14J03432 to M.Y.), the Knut and Alice Wallenberg Foundation, the Swedish Research Council, and the Swedish Energy Agency. M.Y. gratefully acknowledges a JSPS Fellowship for Young Scientists. We thank Prof. Dr. Licheng Sun for helpful discussions, and Dr. Lei Wang and Dr. Yuta Takano for technical support.
Publisher Copyright:
© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2017/3/13
Y1 - 2017/3/13
N2 - A ruthenium complex, porphyrin sensitizer, fullerene acceptor molecular pentad has been synthesized and a long-lived hole–electron pair was achieved in aqueous solution by photoinduced multistep electron transfer: Upon irradiation by visible light, the excited-state of a zinc porphyrin (1ZnP*) was quenched by fullerene (C60) to afford a radical ion pair, 1,3(ZnP.+-C60.−). This was followed by the subsequent electron transfer from a water oxidation catalyst unit (RuII) to ZnP.+ to give the long-lived charge-separated state, RuIII-ZnP-C60.−, with a lifetime of 14 μs. The ZnP worked as a visible-light-harvesting antenna, while the C60 acted as an excellent electron acceptor. As a consequence, visible-light-driven water oxidation by this integrated photosynthetic model compound was achieved in the presence of sacrificial oxidant and redox mediator.
AB - A ruthenium complex, porphyrin sensitizer, fullerene acceptor molecular pentad has been synthesized and a long-lived hole–electron pair was achieved in aqueous solution by photoinduced multistep electron transfer: Upon irradiation by visible light, the excited-state of a zinc porphyrin (1ZnP*) was quenched by fullerene (C60) to afford a radical ion pair, 1,3(ZnP.+-C60.−). This was followed by the subsequent electron transfer from a water oxidation catalyst unit (RuII) to ZnP.+ to give the long-lived charge-separated state, RuIII-ZnP-C60.−, with a lifetime of 14 μs. The ZnP worked as a visible-light-harvesting antenna, while the C60 acted as an excellent electron acceptor. As a consequence, visible-light-driven water oxidation by this integrated photosynthetic model compound was achieved in the presence of sacrificial oxidant and redox mediator.
KW - artificial photosynthesis
KW - fullerenes
KW - molecular pentads
KW - photoinduced electron transfer
KW - porphyrins
KW - ruthenium
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U2 - 10.1002/anie.201612456
DO - 10.1002/anie.201612456
M3 - Article
C2 - 28194929
AN - SCOPUS:85013080967
SN - 1433-7851
VL - 56
SP - 3329
EP - 3333
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
IS - 12
ER -