Time-Resolved Spectroelectrochemical Dynamics of Carotenoid 8’-apo-β-Carotenal
(2023) In ChemPlusChem 88(11).- Abstract
This work examines the influence of applied external voltage in bulk electrolysis on the excited-state properties of 8′-apo-β-carotenal in acetonitrile by steady-state and ultrafast time-resolved absorption spectroscopy. The data collected under bulk electrolysis were compared with those taken without applied voltage. The steady-state measurements showed that although intensity of the S0-S2 absorption band varies with the applied voltage, the spectral position remain nearly constant. Comparison of transient absorption spectra shows that the magnitude of the ICT-like band decreases during the experiment under applied voltage condition, and is associated with a prolongation of the S1/ICT-like lifetime from... (More)
This work examines the influence of applied external voltage in bulk electrolysis on the excited-state properties of 8′-apo-β-carotenal in acetonitrile by steady-state and ultrafast time-resolved absorption spectroscopy. The data collected under bulk electrolysis were compared with those taken without applied voltage. The steady-state measurements showed that although intensity of the S0-S2 absorption band varies with the applied voltage, the spectral position remain nearly constant. Comparison of transient absorption spectra shows that the magnitude of the ICT-like band decreases during the experiment under applied voltage condition, and is associated with a prolongation of the S1/ICT-like lifetime from 8 ps to 13 ps. Furthermore, switching off the applied voltage resulted in returning to no-voltage data within about 30 min. Our results show that the amplitude of the signal associated with the ICT state can be tuned by applying an external voltage.
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- author
- Keşan, Gürkan ; Özcan, Emrah ; Chábera, Pavel LU ; Polívka, Tomáš and Fuciman, Marcel
- organization
- publishing date
- 2023-11
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- 8’-apo-β-carotenal, carotenoid, cyclic voltammetry, spectroelectrochemistry, transient absorption
- in
- ChemPlusChem
- volume
- 88
- issue
- 11
- article number
- e202300404
- publisher
- Institute of Organic Chemistry and Biochemistry
- external identifiers
-
- pmid:37747302
- scopus:85173747969
- ISSN
- 2192-6506
- DOI
- 10.1002/cplu.202300404
- language
- English
- LU publication?
- yes
- id
- ff22a3af-c586-4901-8205-0166f543c5b1
- date added to LUP
- 2024-01-11 15:21:10
- date last changed
- 2024-04-26 11:07:00
@article{ff22a3af-c586-4901-8205-0166f543c5b1, abstract = {{<p>This work examines the influence of applied external voltage in bulk electrolysis on the excited-state properties of 8′-apo-β-carotenal in acetonitrile by steady-state and ultrafast time-resolved absorption spectroscopy. The data collected under bulk electrolysis were compared with those taken without applied voltage. The steady-state measurements showed that although intensity of the S<sub>0</sub>-S<sub>2</sub> absorption band varies with the applied voltage, the spectral position remain nearly constant. Comparison of transient absorption spectra shows that the magnitude of the ICT-like band decreases during the experiment under applied voltage condition, and is associated with a prolongation of the S<sub>1</sub>/ICT-like lifetime from 8 ps to 13 ps. Furthermore, switching off the applied voltage resulted in returning to no-voltage data within about 30 min. Our results show that the amplitude of the signal associated with the ICT state can be tuned by applying an external voltage.</p>}}, author = {{Keşan, Gürkan and Özcan, Emrah and Chábera, Pavel and Polívka, Tomáš and Fuciman, Marcel}}, issn = {{2192-6506}}, keywords = {{8’-apo-β-carotenal; carotenoid; cyclic voltammetry; spectroelectrochemistry; transient absorption}}, language = {{eng}}, number = {{11}}, publisher = {{Institute of Organic Chemistry and Biochemistry}}, series = {{ChemPlusChem}}, title = {{Time-Resolved Spectroelectrochemical Dynamics of Carotenoid 8’-apo-β-Carotenal}}, url = {{http://dx.doi.org/10.1002/cplu.202300404}}, doi = {{10.1002/cplu.202300404}}, volume = {{88}}, year = {{2023}}, }