Visible light activated energy storage in solid-state Azo-BF 2 switches.

Autor: Qiu Q; Department of Chemistry, Brandeis University 415 South Street Waltham MA 02453 USA gracehan@brandeis.edu., Qi Q; Department of Chemistry, Dartmouth College Hanover NH 03755 USA ivan.aprahamian@dartmouth.edu., Usuba J; Department of Chemistry, Brandeis University 415 South Street Waltham MA 02453 USA gracehan@brandeis.edu., Lee K; Department of Chemistry, Brandeis University 415 South Street Waltham MA 02453 USA gracehan@brandeis.edu., Aprahamian I; Department of Chemistry, Dartmouth College Hanover NH 03755 USA ivan.aprahamian@dartmouth.edu., Han GGD; Department of Chemistry, Brandeis University 415 South Street Waltham MA 02453 USA gracehan@brandeis.edu.
Jazyk: angličtina
Zdroj: Chemical science [Chem Sci] 2023 Sep 26; Vol. 14 (41), pp. 11359-11364. Date of Electronic Publication: 2023 Sep 26 (Print Publication: 2023).
DOI: 10.1039/d3sc03465h
Abstrakt: We present here a group of Azo-BF 2 photoswitches that store and release energy in response to visible light irradiation. Unmodified Azo-BF 2 switches have a planar structure with a large π-conjugation system, which hinders E-Z isomerization when in a compacted state. To address this challenge, we modified the switches with one or two aliphatic groups, which altered the intermolecular interactions and arrangement of the photochromes in the solid state. The derivative with two substituents exhibited a non-planar configuration that provided particularly large conformational freedom, allowing for efficient isomerization in the solid phase. Our discovery highlights the potential of using double aliphatic functionalization as a promising approach to facilitate solid-state switching of large aromatic photoswitches. This finding opens up new possibilities for exploring various photoswitch candidates for molecular solar thermal energy storage applications.
Competing Interests: There are no conflicts to declare.
(This journal is © The Royal Society of Chemistry.)
Databáze: MEDLINE
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