Norbornadiene-Based Photoswitches with Exceptional Combination of Solar Spectrum Match and Long-Term Energy Storage
Artikel i vetenskaplig tidskrift, 2018

Norbornadiene-quadricyclane (NBD-QC) photoswitches are candidates for applications in solar thermal energy storage. Functionally, they rely on an intramolecular [2+2] cycloaddition reaction, which couples the S0 landscape on the NBD side to the S1 landscape on the QC side of the reaction and vice-versa. This commonly results in an unfavourable correlation between the first absorption maximum and the barrier for thermal back-conversion. This work demonstrates that this correlation can be counteracted by using steric repulsion to hamper the rotational motion of the side groups along the back-conversion path. It is shown that this modification reduces the correlation between the effective back-conversion barrier and the first absorption maximum and also increases the back-conversion entropy. The resulting molecules exhibit exceptionally long half-lives for their metastable forms without significantly affecting other properties, most notably solar spectrum match and storage density.

solar energy

quadricyclane

norbornadienes

energy storage

molecular photoswitches

Författare

Martyn Jevric

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Polymerteknologi

Anne Petersen

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Kasper Moth-Poulsen Group

Mads Manso

Köpenhamns universitet

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Polymerteknologi

Sandeep Kumar Singh

Chalmers, Fysik, Material- och ytteori

Zhihang Wang

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Polymerteknologi

Ambra Dreos

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Polymerteknologi

Christopher Sumby

University of Adelaide

M. B. Nielsen

Köpenhamns universitet

Karl Börjesson

Göteborgs universitet

Paul Erhart

Chalmers, Fysik, Material- och ytteori

Kasper Moth-Poulsen

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Kasper Moth-Poulsen Group

Chemistry - A European Journal

0947-6539 (ISSN) 1521-3765 (eISSN)

Vol. 24 49 12767-12772

Ämneskategorier

Atom- och molekylfysik och optik

Annan fysik

Teoretisk kemi

DOI

10.1002/chem.201802932

Mer information

Senast uppdaterat

2019-01-08