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Time-Resolved Raman Spectroscopy of Polaron Formation in a Polymer Photocatalyst.
- Source :
-
The journal of physical chemistry letters [J Phys Chem Lett] 2021 Nov 11; Vol. 12 (44), pp. 10899-10905. Date of Electronic Publication: 2021 Nov 03. - Publication Year :
- 2021
-
Abstract
- Polymer photocatalysts are a synthetically diverse class of materials that can be used for the production of solar fuels such as H <subscript>2</subscript> , but the underlying mechanisms by which they operate are poorly understood. Time-resolved vibrational spectroscopy provides a powerful structure-specific probe of photogenerated species. Here we report the use of time-resolved resonance Raman (TR <superscript>3</superscript> ) spectroscopy to study the formation of polaron pairs and electron polarons in one of the most active linear polymer photocatalysts for H <subscript>2</subscript> production, poly(dibenzo[ b , d ]thiophene sulfone), P10. We identify that polaron-pair formation prior to thermalization of the initially generated excited states is an important pathway for the generation of long-lived photoelectrons.
Details
- Language :
- English
- ISSN :
- 1948-7185
- Volume :
- 12
- Issue :
- 44
- Database :
- MEDLINE
- Journal :
- The journal of physical chemistry letters
- Publication Type :
- Academic Journal
- Accession number :
- 34730969
- Full Text :
- https://doi.org/10.1021/acs.jpclett.1c03073