Understanding Photoinduced Symmetry- Breaking Charge Separation
Symmetry-breaking charge separation (SB-CS) is a photoinduced electron transfer reaction in which the chromophore acts as both the acceptor and the donor. This reaction which is still poorly understood may enable long-lived charge separation interesting for many applications. Here we show that SB-CS...
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| Language: | deu |
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Swiss Chemical Society
2025-04-01
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| Series: | CHIMIA |
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| Online Access: | https://www.chimia.ch/chimia/article/view/7624 |
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| author | Johannes Wega |
| author_facet | Johannes Wega |
| author_sort | Johannes Wega |
| collection | DOAJ |
| description | Symmetry-breaking charge separation (SB-CS) is a photoinduced electron transfer reaction in which the chromophore acts as both the acceptor and the donor. This reaction which is still poorly understood may enable long-lived charge separation interesting for many applications. Here we show that SB-CS can be realised bimolecularly with perylene and discuss the factors favouring it. Furthermore, using a pyrene bichromophoric system, we discuss the influence of interchromophore coupling and how the photophysics can be fine-tuned to yield SB-CS over other processes such as excimer formation.
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| format | Article |
| id | doaj-art-a596d52e38c04183a4fd4517e40e50b0 |
| institution | DOAJ |
| issn | 0009-4293 2673-2424 |
| language | deu |
| publishDate | 2025-04-01 |
| publisher | Swiss Chemical Society |
| record_format | Article |
| series | CHIMIA |
| spelling | doaj-art-a596d52e38c04183a4fd4517e40e50b02025-08-20T02:55:24ZdeuSwiss Chemical SocietyCHIMIA0009-42932673-24242025-04-0179410.2533/chimia.2025.263Understanding Photoinduced Symmetry- Breaking Charge SeparationJohannes Wega0Department of Physical Chemistry, University of Geneva, Quai Ansermet 30, CH-1211 Geneva 4Symmetry-breaking charge separation (SB-CS) is a photoinduced electron transfer reaction in which the chromophore acts as both the acceptor and the donor. This reaction which is still poorly understood may enable long-lived charge separation interesting for many applications. Here we show that SB-CS can be realised bimolecularly with perylene and discuss the factors favouring it. Furthermore, using a pyrene bichromophoric system, we discuss the influence of interchromophore coupling and how the photophysics can be fine-tuned to yield SB-CS over other processes such as excimer formation. https://www.chimia.ch/chimia/article/view/7624Electron transferExcimerInterchromophore couplingPhotochemistryTransient absorption spectroscopy |
| spellingShingle | Johannes Wega Understanding Photoinduced Symmetry- Breaking Charge Separation CHIMIA Electron transfer Excimer Interchromophore coupling Photochemistry Transient absorption spectroscopy |
| title | Understanding Photoinduced Symmetry- Breaking Charge Separation |
| title_full | Understanding Photoinduced Symmetry- Breaking Charge Separation |
| title_fullStr | Understanding Photoinduced Symmetry- Breaking Charge Separation |
| title_full_unstemmed | Understanding Photoinduced Symmetry- Breaking Charge Separation |
| title_short | Understanding Photoinduced Symmetry- Breaking Charge Separation |
| title_sort | understanding photoinduced symmetry breaking charge separation |
| topic | Electron transfer Excimer Interchromophore coupling Photochemistry Transient absorption spectroscopy |
| url | https://www.chimia.ch/chimia/article/view/7624 |
| work_keys_str_mv | AT johanneswega understandingphotoinducedsymmetrybreakingchargeseparation |