Design and Tuning of Photoswitches for Solar Energy Storage

Current energy demand makes it compulsory to explore alternative energy sources beyond fossil fuels. Molecular solar thermal (MOST) systems have been proposed as a suitable technology for the use and storage of solar energy. Compounds used for this application need to fulfil a long series of require...

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Main Authors: Raul Losantos, Diego Sampedro
Format: Article
Language:English
Published: MDPI AG 2021-06-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/26/13/3796
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author Raul Losantos
Diego Sampedro
author_facet Raul Losantos
Diego Sampedro
author_sort Raul Losantos
collection DOAJ
description Current energy demand makes it compulsory to explore alternative energy sources beyond fossil fuels. Molecular solar thermal (MOST) systems have been proposed as a suitable technology for the use and storage of solar energy. Compounds used for this application need to fulfil a long series of requirements, being the absorption of sunlight and the energy stored some of the most critical. In this paper, we study different families of well-known molecular photoswitches from the point of view of their potential use as MOST. Starting from basic structures, we use density functional theory (DFT) computational modelling to propose two different strategies to increase the energy difference between isomers and to tune the absorption spectrum. The inclusion of a mechanical lock in the structure, via an alkyl chain and the presence of a hydrogen bonding are shown to directly influence the energy difference and the absorption spectra. Results shown here prove that these two approaches could be relevant for the design of new compounds with improved performance for MOST applications.
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spelling doaj.art-d2222e0bd6cb4ad69c8221519de7f49c2023-11-22T01:12:18ZengMDPI AGMolecules1420-30492021-06-012613379610.3390/molecules26133796Design and Tuning of Photoswitches for Solar Energy StorageRaul Losantos0Diego Sampedro1Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Madre de Dios, 53, 26006 Logroño, La Rioja, SpainDepartamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Madre de Dios, 53, 26006 Logroño, La Rioja, SpainCurrent energy demand makes it compulsory to explore alternative energy sources beyond fossil fuels. Molecular solar thermal (MOST) systems have been proposed as a suitable technology for the use and storage of solar energy. Compounds used for this application need to fulfil a long series of requirements, being the absorption of sunlight and the energy stored some of the most critical. In this paper, we study different families of well-known molecular photoswitches from the point of view of their potential use as MOST. Starting from basic structures, we use density functional theory (DFT) computational modelling to propose two different strategies to increase the energy difference between isomers and to tune the absorption spectrum. The inclusion of a mechanical lock in the structure, via an alkyl chain and the presence of a hydrogen bonding are shown to directly influence the energy difference and the absorption spectra. Results shown here prove that these two approaches could be relevant for the design of new compounds with improved performance for MOST applications.https://www.mdpi.com/1420-3049/26/13/3796energy storageMOSTcomputational designphotoswitches
spellingShingle Raul Losantos
Diego Sampedro
Design and Tuning of Photoswitches for Solar Energy Storage
Molecules
energy storage
MOST
computational design
photoswitches
title Design and Tuning of Photoswitches for Solar Energy Storage
title_full Design and Tuning of Photoswitches for Solar Energy Storage
title_fullStr Design and Tuning of Photoswitches for Solar Energy Storage
title_full_unstemmed Design and Tuning of Photoswitches for Solar Energy Storage
title_short Design and Tuning of Photoswitches for Solar Energy Storage
title_sort design and tuning of photoswitches for solar energy storage
topic energy storage
MOST
computational design
photoswitches
url https://www.mdpi.com/1420-3049/26/13/3796
work_keys_str_mv AT raullosantos designandtuningofphotoswitchesforsolarenergystorage
AT diegosampedro designandtuningofphotoswitchesforsolarenergystorage