open access

https://hdl.handle.net/2115/80429

Photoinduced Betaine Generation for Efficient Photothermal Energy Conversion

英語

photochemistry

2020-02-11

Wiley-Blackwell

Chemistry – A European Journal

26(9)

2060-2066

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.

学術雑誌論文

Accepted Manuscript

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 https://doi.org/10.1002/chem.201905030 . This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.

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