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Shedding Light on t...
Shedding Light on the Nature of Photoinduced States Formed in a Hydrogen-Generating Supramolecular RuPt Photocatalyst by Ultrafast Spectroscopy
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- Huijser, Annemarie (author)
- University of Twente
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- Pan, Qing (author)
- University of Twente
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- Van Duinen, David (author)
- University of Twente
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- Laursen, Mads G. (author)
- Technical University of Denmark
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- El Nahhas, Amal (author)
- Lund University,Lunds universitet,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH
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- Chabera, Pavel (author)
- Lund University,Lunds universitet,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH
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- Freitag, Leon (author)
- University of Vienna
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- González, Leticia (author)
- University of Vienna
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- Kong, Qingyu (author)
- Argonne National Laboratory
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- Zhang, Xiaoyi (author)
- Argonne National Laboratory
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- Haldrup, Kristoffer (author)
- Technical University of Denmark
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- Browne, Wesley R. (author)
- University of Groningen
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- Smolentsev, Grigory (author)
- Southern Federal University,Paul Scherrer Institute
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- Uhlig, Jens (author)
- Lund University,Lunds universitet,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH
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(creator_code:org_t)
- 2018-07-27
- 2018
- English.
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In: Journal of Physical Chemistry A. - : American Chemical Society (ACS). - 1089-5639 .- 1520-5215. ; 122:31, s. 6396-6406
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Abstract
Subject headings
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- Photoinduced electronic and structural changes of a hydrogen-generating supramolecular RuPt photocatalyst are studied by a combination of time-resolved photoluminescence, optical transient absorption, and X-ray absorption spectroscopy. This work uses the element specificity of X-ray techniques to focus on the interplay between the photophysical and -chemical processes and the associated time scales at the catalytic Pt moiety. We observe very fast (<30 ps) photoreduction of the Pt catalytic site, followed by an ∼600 ps step into a strongly oxidized Pt center. The latter process is likely induced by oxidative addition of reactive iodine species. The oxidized Pt species is long-lived and fully recovers to the original ground state complex on a >10 μs time scale. However, the photosensitizing Ru moiety is fully restored on a much shorter ∼300 ns time scale. This reaction scheme implies that we may withdraw two electrons from a catalyst that is activated by a single photon.
Subject headings
- NATURVETENSKAP -- Kemi -- Organisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Organic Chemistry (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
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- ref (subject category)
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- By the author/editor
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Huijser, Annemar ...
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Pan, Qing
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Van Duinen, Davi ...
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Laursen, Mads G.
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El Nahhas, Amal
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Chabera, Pavel
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show more...
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Freitag, Leon
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González, Letici ...
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Kong, Qingyu
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Zhang, Xiaoyi
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Haldrup, Kristof ...
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Browne, Wesley R ...
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Smolentsev, Grig ...
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Uhlig, Jens
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Organic Chemistr ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Atom and Molecul ...
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Journal of Physi ...
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Lund University