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Photoinduced Betaine Generation for Efficient Photothermal Energy Conversion

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Title: Photoinduced Betaine Generation for Efficient Photothermal Energy Conversion
Authors: Sasikumar, Devika Browse this author
Takano, Yuta Browse this author
Biju, Vasudevanpillai Browse this author
Keywords: betaines
donor-acceptor systems
electron transfer
energy conversion
Issue Date: 11-Feb-2020
Publisher: Wiley-Blackwell
Journal Title: Chemistry – A European Journal
Volume: 26
Issue: 9
Start Page: 2060
End Page: 2066
Publisher DOI: 10.1002/chem.201905030
Abstract: The conversion of solar energy to thermal, chemical, or electrical energy attracts great attention in chemistry and physics. There has been a considerable effort for the efficient extraction of photons throughout the entire solar spectrum. In this work light energy was efficiently harvested by using a long-lived betaine photogenerated from an acridinium-based electron donor-acceptor dyad. The photothermal energy-conversion efficiency of the dyad is significantly enhanced by simultaneous illumination with blue (420-440 nm) and yellow (>480 nm) light in comparison with the sum of the conversion efficiencies for individual illumination with blue or yellow light. The enhanced photothermal effect is due to the photogenerated betaine, which absorbs longer-wavelength light than the dyad, and thus the dyad-betaine combination is promising for efficient photothermal energy conversion. The mechanisms of betaine generation and energy conversion are discussed on the basis of steady-state and transient spectral measurements.
Rights: This is the peer reviewed version of the following article: D. Sasikumar, Y. Takano, V. Biju, Chem. Eur. J. 2020, 26, 2060., which has been published in final form at . This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Type: article (author version)
Appears in Collections:電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 髙野 勇太

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