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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, 12 (46). pp. 15239-15252. doi:10.1039/D1SC05077J

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Official URL: http://dx.doi.org/10.1039/D1SC05077J

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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
Subjects: Q Science > QD Chemistry
Q Science > QK Botany
Divisions: Faculty of Science, Engineering and Medicine > Science > Chemistry
Faculty of Science, Engineering and Medicine > Science > Physics
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: 14 December 2021
Dates:
DateEvent
14 December 2021Published
18 October 2021Available
18 October 2021Accepted
Volume: 12
Number: 46
Page Range: pp. 15239-15252
DOI: 10.1039/D1SC05077J
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
828753BoostCropUNSPECIFIED

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