Disequilibrating azobenzenes by visible-light sensitization under confinement
Creators
- 1. Weizmann Institute of Science
- 2. Hebrew University of Jerusalem
- 3. Tampere University
- 4. University of Wrocław
- 5. Imperial College London
Description
The ability to photoswitch azobenzenes from their stable E isomer to the metastable Z state is the basis of numerous applications of these molecules. However, this reaction typically requires UV light, which limits the applicability, particularly in biological settings. Here we introduce DisEquilibration by Sensitization under Confinement (DESC), a biomimetic approach to switch various azobenzenes using visible light of desired color, including red. DESC relies on a combination of a macrocyclic host and a photosensitizer, which act together to bind and selectively sensitize E-azobenzenes. After switching to the Z isomer, the azobenzene loses its affinity to—and is expelled from—the host, which can convert additional copies of E into Z. In this way, the host/photosensitizer complex acts as a light-driven supramolecular machine, converting photon energy into chemical energy in the form of out-of-equilibrium photostationary states, including ones that cannot be accessed via direct photoexcitation.
Notes
Funding provided by: Horizon 2020 Framework Programme
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100010661
Award Number: 812868
Funding provided by: Horizon 2020 Framework Programme
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100010661
Award Number: 101022777
Funding provided by: Engineering and Physical Sciences Research Council
Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100000266
Award Number: EP/R00188X/1
Funding provided by: European Research Council
Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100000781
Award Number: 820008
Funding provided by: European Research Council
Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100000781
Award Number: 101045223
Funding provided by: Academy of Finland
Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100002341
Award Number: 346107
Funding provided by: Academy of Finland
Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100002341
Award Number: 32016
Funding provided by: Academy of Finland
Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100002341
Award Number: 340103
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Additional details
Related works
- Is cited by
- 10.26434/chemrxiv-2023-gq2h0 (DOI)