Visible light-driven water oxidation with a subporphyrin sensitizer and a water oxidation catalyst
(2016) In Chemical Communications 52(94). p.13702-13705- Abstract
A new subporphyrin was synthesized for use as a molecular sensitizer in electrochemical and dye-sensitized photoelectrochemical water oxidation. A photoelectrochemical cell with a TiO2 electrode modified with the sensitizer and a molecular water oxidation catalyst generated higher photocurrent than reference cells that have electrodes modified with either the photosensitizer or the catalyst under visible light (λ > 500 nm) illumination. Oxygen evolution was confirmed after photolysis by GC and GC-MS analyses using isotope-labeling experiments. The large molar extinction coefficients of the ring-contracted porphyrin in the visible region enabled kinetic analysis by time-resolved transient absorption spectroscopy, which also... (More)
A new subporphyrin was synthesized for use as a molecular sensitizer in electrochemical and dye-sensitized photoelectrochemical water oxidation. A photoelectrochemical cell with a TiO2 electrode modified with the sensitizer and a molecular water oxidation catalyst generated higher photocurrent than reference cells that have electrodes modified with either the photosensitizer or the catalyst under visible light (λ > 500 nm) illumination. Oxygen evolution was confirmed after photolysis by GC and GC-MS analyses using isotope-labeling experiments. The large molar extinction coefficients of the ring-contracted porphyrin in the visible region enabled kinetic analysis by time-resolved transient absorption spectroscopy, which also supported the photocatalytic activity.
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- author
- Yamamoto, Masanori ; Nishizawa, Yusuke ; Chábera, Pavel LU ; Li, Fusheng ; Pascher, Torbjörn LU ; Sundström, Villy LU ; Sun, Licheng and Imahori, Hiroshi
- organization
- publishing date
- 2016
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Chemical Communications
- volume
- 52
- issue
- 94
- pages
- 4 pages
- publisher
- Royal Society of Chemistry
- external identifiers
-
- scopus:84996805814
- pmid:27819083
- wos:000388958400015
- ISSN
- 1359-7345
- DOI
- 10.1039/c6cc07877j
- language
- English
- LU publication?
- yes
- id
- a84956f7-b794-42e0-89b5-6f113cb6e510
- date added to LUP
- 2017-02-21 13:56:33
- date last changed
- 2024-12-09 06:13:29
@article{a84956f7-b794-42e0-89b5-6f113cb6e510, abstract = {{<p>A new subporphyrin was synthesized for use as a molecular sensitizer in electrochemical and dye-sensitized photoelectrochemical water oxidation. A photoelectrochemical cell with a TiO<sub>2</sub> electrode modified with the sensitizer and a molecular water oxidation catalyst generated higher photocurrent than reference cells that have electrodes modified with either the photosensitizer or the catalyst under visible light (λ > 500 nm) illumination. Oxygen evolution was confirmed after photolysis by GC and GC-MS analyses using isotope-labeling experiments. The large molar extinction coefficients of the ring-contracted porphyrin in the visible region enabled kinetic analysis by time-resolved transient absorption spectroscopy, which also supported the photocatalytic activity.</p>}}, author = {{Yamamoto, Masanori and Nishizawa, Yusuke and Chábera, Pavel and Li, Fusheng and Pascher, Torbjörn and Sundström, Villy and Sun, Licheng and Imahori, Hiroshi}}, issn = {{1359-7345}}, language = {{eng}}, number = {{94}}, pages = {{13702--13705}}, publisher = {{Royal Society of Chemistry}}, series = {{Chemical Communications}}, title = {{Visible light-driven water oxidation with a subporphyrin sensitizer and a water oxidation catalyst}}, url = {{http://dx.doi.org/10.1039/c6cc07877j}}, doi = {{10.1039/c6cc07877j}}, volume = {{52}}, year = {{2016}}, }