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


ABSTRACT: 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.

SUBMITTER: Quant M 

PROVIDER: S-EPMC5096010 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature

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

Quant Maria M   Lennartson Anders A   Dreos Ambra A   Kuisma Mikael M   Erhart Paul P   Börjesson Karl K   Moth-Poulsen Kasper K  

Chemistry (Weinheim an der Bergstrasse, Germany) 20160805 37


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 norbor  ...[more]

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