Singlet fission in heterogeneous lycopene aggregates
Abstract We have prepared lycopene aggregates with low scattering in an acetone–water suspension. The aggregates exhibit highly distorted absorption, extending from the UV up to 568 nm, as a result of strong excitonic interactions. We have investigated the structural organization of these aggregates...
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Nature Portfolio
2025-02-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-88220-z |
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| author | Chloe Magne Vasyl Veremeienko Roxanne Bercy Minh-Huong Ha-Thi Ana A. Arteni Andrew A. Pascal Mikas Vengris Thomas Pino Bruno Robert Manuel J. Llansola-Portoles |
| author_facet | Chloe Magne Vasyl Veremeienko Roxanne Bercy Minh-Huong Ha-Thi Ana A. Arteni Andrew A. Pascal Mikas Vengris Thomas Pino Bruno Robert Manuel J. Llansola-Portoles |
| author_sort | Chloe Magne |
| collection | DOAJ |
| description | Abstract We have prepared lycopene aggregates with low scattering in an acetone–water suspension. The aggregates exhibit highly distorted absorption, extending from the UV up to 568 nm, as a result of strong excitonic interactions. We have investigated the structural organization of these aggregates by resonance Raman and TEM, revealing that the lycopene aggregates are not homogeneous, containing at least four different aggregate species. Transient absorption measurements upon excitation at 355, 515, and 570 nm, to sub-select these different species, reveal significant differences in dynamics between each of the aggregate types. The strong excitonic interactions produce extremely distorted transient electronic signatures, which do not allow an unequivocal identification of the excited states at times shorter than 60 ps. However, these experiments demonstrate that all the lycopene aggregated species form long-living triplets via singlet fission. |
| format | Article |
| id | doaj-art-fa14b781998944a187ef7cbef9e1a072 |
| institution | DOAJ |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-fa14b781998944a187ef7cbef9e1a0722025-08-20T02:48:27ZengNature PortfolioScientific Reports2045-23222025-02-0115111210.1038/s41598-025-88220-zSinglet fission in heterogeneous lycopene aggregatesChloe Magne0Vasyl Veremeienko1Roxanne Bercy2Minh-Huong Ha-Thi3Ana A. Arteni4Andrew A. Pascal5Mikas Vengris6Thomas Pino7Bruno Robert8Manuel J. Llansola-Portoles9CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Université Paris-SaclayCEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Université Paris-SaclayCEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Université Paris-SaclayCNRS, Institut Des Sciences Moléculaires d’Orsay, Université Paris-SaclayCEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Université Paris-SaclayCEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Université Paris-SaclayLaser Research Center, Faculty of Physics, Vilnius UniversityCNRS, Institut Des Sciences Moléculaires d’Orsay, Université Paris-SaclayCEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Université Paris-SaclayCEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Université Paris-SaclayAbstract We have prepared lycopene aggregates with low scattering in an acetone–water suspension. The aggregates exhibit highly distorted absorption, extending from the UV up to 568 nm, as a result of strong excitonic interactions. We have investigated the structural organization of these aggregates by resonance Raman and TEM, revealing that the lycopene aggregates are not homogeneous, containing at least four different aggregate species. Transient absorption measurements upon excitation at 355, 515, and 570 nm, to sub-select these different species, reveal significant differences in dynamics between each of the aggregate types. The strong excitonic interactions produce extremely distorted transient electronic signatures, which do not allow an unequivocal identification of the excited states at times shorter than 60 ps. However, these experiments demonstrate that all the lycopene aggregated species form long-living triplets via singlet fission.https://doi.org/10.1038/s41598-025-88220-zSelf-assembled lycopeneSinglet exciton fissionResonance RamanTransient absorption |
| spellingShingle | Chloe Magne Vasyl Veremeienko Roxanne Bercy Minh-Huong Ha-Thi Ana A. Arteni Andrew A. Pascal Mikas Vengris Thomas Pino Bruno Robert Manuel J. Llansola-Portoles Singlet fission in heterogeneous lycopene aggregates Scientific Reports Self-assembled lycopene Singlet exciton fission Resonance Raman Transient absorption |
| title | Singlet fission in heterogeneous lycopene aggregates |
| title_full | Singlet fission in heterogeneous lycopene aggregates |
| title_fullStr | Singlet fission in heterogeneous lycopene aggregates |
| title_full_unstemmed | Singlet fission in heterogeneous lycopene aggregates |
| title_short | Singlet fission in heterogeneous lycopene aggregates |
| title_sort | singlet fission in heterogeneous lycopene aggregates |
| topic | Self-assembled lycopene Singlet exciton fission Resonance Raman Transient absorption |
| url | https://doi.org/10.1038/s41598-025-88220-z |
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