Molecular solar thermal energy storage in photoswitch oligomers increases energy densities and storage times

Nature Communications
Mads MansøKasper Moth-Poulsen

Abstract

Molecular photoswitches can be used for solar thermal energy storage by photoisomerization into high-energy, meta-stable isomers; we present a molecular design strategy leading to photoswitches with high energy densities and long storage times. High measured energy densities of up to 559 kJ kg-1 (155 Wh kg-1), long storage lifetimes up to 48.5 days, and high quantum yields of conversion of up to 94% per subunit are demonstrated in norbornadiene/quadricyclane (NBD/QC) photo-/thermoswitch couples incorporated into dimeric and trimeric structures. By changing the linker unit between the NBD units, we can at the same time fine-tune light-harvesting and energy densities of the dimers and trimers so that they exceed those of their monomeric analogs. These new oligomers thereby meet several of the criteria to be met for an optimum molecule to ultimately enter actual devices being able to undergo closed cycles of solar light-harvesting, energy storage, and heat release.

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Citations

Jul 28, 2018·Organic & Biomolecular Chemistry·Mads MansøMogens Brøndsted Nielsen
Jan 24, 2019·Physical Chemistry Chemical Physics : PCCP·Mads MansøMogens Brøndsted Nielsen
Jan 8, 2019·Chemistry : a European Journal·Zbigniew L Pianowski
Aug 7, 2019·Organic & Biomolecular Chemistry·Martin Drøhse KildeMogens Brøndsted Nielsen
Jan 17, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Mads MansøMogens Brøndsted Nielsen
Mar 3, 2020·Organic & Biomolecular Chemistry·Mads MansøMogens Brøndsted Nielsen
Jun 5, 2019·Nature Communications·Christian SchuschkeJörg Libuda
Jul 17, 2020·Chemical Society Reviews·Yin FangBozhi Tian
Aug 6, 2019·Advanced Science·Anne Ugleholdt PetersenKasper Moth-Poulsen
May 21, 2020·Chemistry : a European Journal·Martin Drøhse KildeMogens Brøndsted Nielsen
Feb 25, 2020·Chemistry : a European Journal·Anne Ugleholdt PetersenMogens Brøndsted Nielsen
Mar 27, 2021·Chemistry : a European Journal·Anna-Lena LeistnerZbigniew L Pianowski
Jul 16, 2020·Journal of the American Chemical Society·Baswanth OrugantiBo Durbeej
Apr 23, 2020·Journal of the American Chemical Society·Mihael A GerkmanGrace G D Han
Jun 17, 2020·The Journal of Physical Chemistry Letters·Ugo JacovellaEvan J Bieske
Oct 22, 2020·ACS Applied Materials & Interfaces·Xingtang XuGuojie Wang
Jun 8, 2021·Chemistry : a European Journal·Alvis MengotsMogens Brøndsted Nielsen
Jul 15, 2020·Accounts of Chemical Research·Jessica Orrego-HernándezKasper Moth-Poulsen
Feb 20, 2019·The Journal of Physical Chemistry. a·Gabriel F Martins, Benedito J C Cabral
Jan 5, 2019·The Journal of Physical Chemistry. a·Ugo JacovellaEvan J Bieske
Sep 15, 2021·Journal of the American Chemical Society·Jake L GreenfieldMatthew J Fuchter
Oct 1, 2021·Chemical Society Reviews·Jana VolarićBen L Feringa

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Methods Mentioned

BETA
irradiating
NMR
differential scanning calorimetry

Software Mentioned

NWChem

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