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Low Molecular Weight Norbornadiene Derivatives for Molecular Solar-Thermal Energy Storage

Journal article
Authors Maria Quant
Anders Lennartson
Ambra Dreos
Mikael Kuisma
Paul Erhart
Karl Börjesson
Kasper Moth-Poulsen
Published in Chemistry-a European Journal
Volume 22
Issue 37
Pages 13265-13274
ISSN 0947-6539
Publication year 2016
Published at Department of Chemistry and Molecular Biology
Pages 13265-13274
Language en
Keywords donor-acceptor systems, energy conversion, molecular switches, norbornadiene, quadricyclane, substituted norbornadienes, electron-transfer, high enthalpy, cis-form, isomerization, azobenzene, quadricyclane, conversion, devices, systems, Chemistry
Subject categories Chemical Sciences


Molecular solar-thermal energy storage systems are based on molecular switches that reversibly convert solar energy into chemical energy. Herein, we report the synthesis, characterization, and computational evaluation of a series of low molecular weight (193-260 g mol(-1)) norbornadiene-quadricyclane systems. The molecules feature cyano acceptor and ethynyl-substituted aromatic donor groups, leading to a good match with solar irradiation, quantitative photo-thermal conversion between the norbornadiene and quadricyclane, as well as high energy storage densities (396-629 kJ kg(-1)). The spectroscopic properties and energy storage capability have been further evaluated through density functional theory calculations, which indicate that the ethynyl moiety plays a critical role in obtaining the high oscillator strengths seen for these molecules.

Page Manager: Webmaster|Last update: 9/11/2012

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