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
Anne Petersen
Chalmers, Kemi och kemiteknik, Tillämpad kemi
Mads Manso
Köpenhamns universitet
Chalmers, Kemi och kemiteknik, Tillämpad kemi
Sandeep Kumar Singh
Chalmers, Fysik, Material- och ytteori
Zhihang Wang
Chalmers, Kemi och kemiteknik, Tillämpad kemi
Ambra Dreos
Chalmers, Kemi och kemiteknik, Tillämpad kemi
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
Chemistry - A European Journal
0947-6539 (ISSN) 1521-3765 (eISSN)
Vol. 24 49 12767-12772Ämneskategorier
Atom- och molekylfysik och optik
Annan fysik
Teoretisk kemi
DOI
10.1002/chem.201802932