Push-Pull Bis-Norbornadienes for Solar Thermal Energy Storage.
Chemistry
; 30(35): e202400482, 2024 Jun 20.
Article
en En
| MEDLINE
| ID: mdl-38519425
ABSTRACT
The norbornadiene/quadricyclane (NBD/QC) photoswitch pair represents a promising system for application in molecular solar thermal energy storage (MOST). Often, the NBD derivatives have very limited overlap with the solar spectrum, and substitution to redshift the absorption leads to a decrease in the gravimetric energy density. Dimeric systems mitigate this factor because two switches can 'share' a substituent. Here, we present five new NBD dimers with red-shifted absorption spectra. One dimer features the most red-shifted absorption onset (539â
nm) and a significantly red-shifted absorption maximum (404â
nm) for NBD systems reported so far, without compromising thermal half-life. Promising properties for high-performance MOST applications are demonstrated, such as high absorption onsets reaching 539â
nm, and energy densities of 379â
kJ/kg, while still maintaining long half-lives of the metastable isomer, up to 23â
hours at 25 °C.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Chemistry
Asunto de la revista:
QUIMICA
Año:
2024
Tipo del documento:
Article
País de afiliación:
Países Bajos
Pais de publicación:
Alemania