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Towards developing novel and sustainable molecular light-to-heat converters
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Abiola, Temitope T., Rioux, Benjamin, Toldo, Josene M., Alarcan, Jimmy, Woolley, Jack M., Turner, Matthew A. P., Coxon, Daniel J. L., Telles do Casal, Mariana, Peyrot, Cédric, Mention, Matthieu M., Buma, Wybren J., Ashfold, Michael N. R., Braeuning, Albert, Barbatti, Mario, Stavros, Vasilios G. and Allais, Florent (2021) Towards developing novel and sustainable molecular light-to-heat converters. Chemical Science . doi:10.1039/D1SC05077J (In Press)
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WRAP-Towards-developing-novel-sustainable-molecular-light-heat-converters-2021.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (2572Kb) | Preview |
Official URL: http://dx.doi.org/10.1039/D1SC05077J
Abstract
Light-to-heat conversion materials generate great interest due to their widespread applications, notable exemplars being solar energy harvesting and photoprotection. Another more recently identified potential application for such materials is in molecular heaters for agriculture, whose function is to protect crops from extreme cold weather and extend both the growing season and the geographic areas capable of supporting growth, all of which could help reduce food security challenges. To address this demand, a new series of phenolic-based barbituric absorbers of ultraviolet (UV) radiation has been designed and synthesised in a sustainable manner. The photophysics of these molecules has been studied in solution using femtosecond transient electronic and vibrational absorption spectroscopies, allied with computational simulations and their potential toxicity assessed by in silico studies. Following photoexcitation to the lowest singlet excited state, these barbituric absorbers repopulate the electronic ground state with high fidelity on an ultrafast time scale (within a few picoseconds). The energy relaxation pathway includes a twisted intramolecular charge-transfer state as the system evolves out of the Franck–Condon region, internal conversion to the ground electronic state, and subsequent vibrational cooling. These barbituric absorbers display promising light-to-heat conversion capabilities, are predicted to be non-toxic, and demand further study within neighbouring application-based fields.
| Item Type: | Journal Article | ||||||
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| Subjects: | Q Science > QD Chemistry Q Science > QK Botany |
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| Divisions: | Faculty of Science > Chemistry Faculty of Science > Physics |
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| Library of Congress Subject Headings (LCSH): | Plants -- Effect of light on -- Research, Photochemistry -- Research, Plant pigments, Solar energy -- Research | ||||||
| Journal or Publication Title: | Chemical Science | ||||||
| Publisher: | Royal Society of Chemistry | ||||||
| ISSN: | 2041-6520 | ||||||
| Official Date: | 18 October 2021 | ||||||
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| DOI: | 10.1039/D1SC05077J | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | In Press | ||||||
| Access rights to Published version: | Open Access | ||||||
| RIOXX Funder/Project Grant: |
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