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Quaranta A, Krieger-Liszkay A, Pascal AA, Perreau F, Robert B, Vengris M, Llansola-Portoles MJ. Singlet fission in naturally-organized carotenoid molecules. Phys Chem Chem Phys 2021; 23:4768-4776. [PMID: 33599225 DOI: 10.1039/d0cp04493h] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
We have investigated the photophysics of aggregated lutein/violaxanthin in daffodil chromoplasts. We reveal the presence of three carotenoid aggregate species, the main one composed of a mixture of lutein/violaxanthin absorbing at 481 nm, and two secondary populations of aggregated carotenoids absorbing circa 500 and 402 nm. The major population exhibits an efficient singlet fission process, generating μs-lived triplet states on an ultrafast timescale. The structural organization of aggregated lutein/violaxanthin in daffodil chromoplasts produces well-defined electronic levels that permit the energetic pathways to be disentangled unequivocally, allowing us to propose a consistent mechanism for singlet fission in carotenoid aggregates. Transient absorption measurements on this system reveal for the first time an entangled triplet signature for carotenoid aggregates, and its evolution into dissociated triplet states. A clear picture of the carotenoid singlet fission pathway is obtained, which is usually blurred due to the intrinsic disorder of carotenoid aggregates.
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Affiliation(s)
- Annamaria Quaranta
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198, Gif-sur-Yvette, France.
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2
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Lenyk B, Schöps V, Boneberg J, Kabdulov M, Huhn T, Scheer E, Offenhäusser A, Mayer D. Surface Plasmon-Enhanced Switching Kinetics of Molecular Photochromic Films on Gold Nanohole Arrays. NANO LETTERS 2020; 20:5243-5250. [PMID: 32520573 DOI: 10.1021/acs.nanolett.0c01569] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Diarylethene molecules are discussed as possible optical switches, which can reversibly transition between completely conjugated (closed) and nonconjugated (open) forms with different electrical conductance and optical absorbance, by exposure to UV and visible light. However, in general the opening reaction exhibits much lower quantum yield than the closing process, hindering their usage in optoelectronic devices. To enhance the opening process, which is supported by visible light, we employ the plasmonic field enhancement of gold films perforated with nanoholes. We show that gold nanohole arrays reveal strong optical transmission in the visible range (∼60%) and pronounced enhancement of field intensities, resulting in around 50% faster switching kinetics of the molecular species in comparison with quartz substrates. The experimental UV-vis measurements are verified with finite-difference time-domain simulation that confirm the obtained results. Thus, we propose gold nanohole arrays as transparent and conductive plasmonic material that accelerates visible-light-triggered chemical reactions including molecular switching.
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Affiliation(s)
- Bohdan Lenyk
- Institute of Biological Information Processing (IBI-3), Forschungszentrum Jülich, 52428 Jülich, Germany
- Department of Physics, University of Konstanz, 78457 Konstanz, Germany
| | - Volker Schöps
- Institute of Biological Information Processing (IBI-3), Forschungszentrum Jülich, 52428 Jülich, Germany
- Department of Physics, University of Konstanz, 78457 Konstanz, Germany
| | - Johannes Boneberg
- Department of Physics, University of Konstanz, 78457 Konstanz, Germany
| | - Mikhail Kabdulov
- Department of Chemistry, University of Konstanz, 78457 Konstanz, Germany
| | - Thomas Huhn
- Department of Chemistry, University of Konstanz, 78457 Konstanz, Germany
| | - Elke Scheer
- Department of Physics, University of Konstanz, 78457 Konstanz, Germany
| | - Andreas Offenhäusser
- Institute of Biological Information Processing (IBI-3), Forschungszentrum Jülich, 52428 Jülich, Germany
| | - Dirk Mayer
- Institute of Biological Information Processing (IBI-3), Forschungszentrum Jülich, 52428 Jülich, Germany
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Wang X, Gu C, Zheng H, Zhang YM, Zhang SXA. A Multi-Stimuli-Responsive Oxazine Molecular Switch: A Strategy for the Design of Electrochromic Materials. Chem Asian J 2018. [DOI: 10.1002/asia.201800282] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Xiaojun Wang
- State Key Lab of Supramolecular Structure and Materials; College of Chemistry; Jilin University; 2699 Qianjin Street Changchun 130012 P. R. China
| | - Chang Gu
- State Key Lab of Supramolecular Structure and Materials; College of Chemistry; Jilin University; 2699 Qianjin Street Changchun 130012 P. R. China
| | - Hongzhi Zheng
- State Key Lab of Supramolecular Structure and Materials; College of Chemistry; Jilin University; 2699 Qianjin Street Changchun 130012 P. R. China
| | - Yu-Mo Zhang
- State Key Lab of Supramolecular Structure and Materials; College of Chemistry; Jilin University; 2699 Qianjin Street Changchun 130012 P. R. China
| | - Sean Xiao-An Zhang
- State Key Lab of Supramolecular Structure and Materials; College of Chemistry; Jilin University; 2699 Qianjin Street Changchun 130012 P. R. China
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Llansola-Portoles MJ, Redeckas K, Streckaité S, Ilioaia C, Pascal AA, Telfer A, Vengris M, Valkunas L, Robert B. Lycopene crystalloids exhibit singlet exciton fission in tomatoes. Phys Chem Chem Phys 2018. [PMID: 29537023 DOI: 10.1039/c7cp08460a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Transient absorption studies conducted on in vitro lycopene aggregates, as well as on lycopene crystalloids inside tomato chromoplasts, reveal the appearance of a long-lived excited state, which we unambiguously identified as lycopene triplet. These triplet states must be generated by singlet exciton fission, which occurs from the lycopene 2Ag state. This is the first time the singlet fission process has ever been shown to occur in a biological material. We propose that the formation of carotenoid assemblies in chromoplasts may constitute a photoprotective process during chromoplast maturation, in addition to their function in signaling processes.
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Affiliation(s)
- M J Llansola-Portoles
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Saclay, Gif-sur-Yvette cedex, F-91198, France.
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Bian B, Zheng Y, Yuan P, Liao B, Chen W, Li W, Mo X, An H, Ding Y. First-principles study on photoswitching behavior and negative differential resistance in single molecule junction. COMPUT THEOR CHEM 2017. [DOI: 10.1016/j.comptc.2017.05.040] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Dar MI, Franckevičius M, Arora N, Redeckas K, Vengris M, Gulbinas V, Zakeeruddin SM, Grätzel M. High photovoltage in perovskite solar cells: New physical insights from the ultrafast transient absorption spectroscopy. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.04.046] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Redeckas K, Voiciuk V, Zigmantas D, Hiller RG, Vengris M. Unveiling the excited state energy transfer pathways in peridinin-chlorophyll a- protein by ultrafast multi-pulse transient absorption spectroscopy. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2017; 1858:297-307. [DOI: 10.1016/j.bbabio.2017.01.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 01/15/2017] [Accepted: 01/31/2017] [Indexed: 11/27/2022]
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Redeckas K, Toliautas S, Steponavičiūtė R, Šačkus A, Sulskus J, Vengris M. A femtosecond stimulated Raman spectroscopic study on the oxazine ring opening dynamics of structurally-modified indolobenzoxazines. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.04.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Redeckas K, Voiciuk V, Vengris M. Investigation of the S1/ICT equilibrium in fucoxanthin by ultrafast pump-dump-probe and femtosecond stimulated Raman scattering spectroscopy. PHOTOSYNTHESIS RESEARCH 2016; 128:169-181. [PMID: 26742754 DOI: 10.1007/s11120-015-0215-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2015] [Accepted: 12/29/2015] [Indexed: 06/05/2023]
Abstract
Time-resolved multi-pulse spectroscopic methods-pump-dump-probe (PDP) and femtosecond stimulated Raman spectroscopy-were used to investigate the excited state photodynamics of the carbonyl group containing carotenoid fucoxanthin (FX). PDP experiments show that S1 and ICT states in FX are strongly coupled and that the interstate equilibrium is rapidly (<5 ps) reestablished after one of the interacting states is deliberately depopulated. Femtosecond stimulated Raman scattering experiments indicate that S1 and ICT are vibrationally distinct species. Identification of the FSRS modes on the S1 and ICT potential energy surfaces allows us to predict a possible coupling channel for the state interaction.
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Affiliation(s)
- Kipras Redeckas
- Department of Quantum Electronics, Faculty of Physics, Vilnius University, Saulėtekio AV. 10, 10223, Vilnius, Lithuania.
| | - Vladislava Voiciuk
- Department of Quantum Electronics, Faculty of Physics, Vilnius University, Saulėtekio AV. 10, 10223, Vilnius, Lithuania
| | - Mikas Vengris
- Department of Quantum Electronics, Faculty of Physics, Vilnius University, Saulėtekio AV. 10, 10223, Vilnius, Lithuania
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Beaujean P, Bondu F, Plaquet A, Garcia-Amorós J, Cusido J, Raymo FM, Castet F, Rodriguez V, Champagne B. Oxazines: A New Class of Second-Order Nonlinear Optical Switches. J Am Chem Soc 2016; 138:5052-62. [DOI: 10.1021/jacs.5b13243] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Pierre Beaujean
- University of Namur, Laboratoire de Chimie Théorique,
Unité de Chimie Physique Théorique et Structurale, rue de Bruxelles, 61, B-5000 Namur, Belgium
| | - Flavie Bondu
- Université de Bordeaux, Institut des Sciences Moléculaires
(ISM), UMR 5255 CNRS, Cours de la Libération 351, F-33405 Talence Cedex, France
| | - Aurélie Plaquet
- University of Namur, Laboratoire de Chimie Théorique,
Unité de Chimie Physique Théorique et Structurale, rue de Bruxelles, 61, B-5000 Namur, Belgium
| | - Jaume Garcia-Amorós
- Laboratory
for Molecular Photonics, Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146-0431, United States
| | - Janet Cusido
- Laboratory
for Molecular Photonics, Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146-0431, United States
| | - Françisco M. Raymo
- Laboratory
for Molecular Photonics, Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146-0431, United States
| | - Frédéric Castet
- Université de Bordeaux, Institut des Sciences Moléculaires
(ISM), UMR 5255 CNRS, Cours de la Libération 351, F-33405 Talence Cedex, France
| | - Vincent Rodriguez
- Université de Bordeaux, Institut des Sciences Moléculaires
(ISM), UMR 5255 CNRS, Cours de la Libération 351, F-33405 Talence Cedex, France
| | - Benoît Champagne
- University of Namur, Laboratoire de Chimie Théorique,
Unité de Chimie Physique Théorique et Structurale, rue de Bruxelles, 61, B-5000 Namur, Belgium
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Swaminathan S, Garcia-Amorós J, Thapaliya ER, Nonell S, Captain B, Raymo FM. Tuning the Activation Wavelength of Photochromic Oxazines. Chemphyschem 2016; 17:1852-9. [DOI: 10.1002/cphc.201600141] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Subramani Swaminathan
- Laboratory for Molecular Photonics, Department of Chemistry; University of Miami; 1301 Memorial Drive Florida 33146-0431 USA
| | - Jaume Garcia-Amorós
- Laboratory for Molecular Photonics, Department of Chemistry; University of Miami; 1301 Memorial Drive Florida 33146-0431 USA
- Grup de Materials Orgànics; Institut de Nanociència i Nanotecnologia (IN2UB); Departament de Química Orgànica; Universitat de Barcelona; Martí i Franqués 1 E-08028 Barcelona Spain
| | - Ek Raj Thapaliya
- Laboratory for Molecular Photonics, Department of Chemistry; University of Miami; 1301 Memorial Drive Florida 33146-0431 USA
| | - Santi Nonell
- Grup O'Enginyeria Molecular; Institut Químic de Sarrià; Universitat Ramón Llull; Via Augusta 390 E-08017 Barcelona Spain
| | - Burjor Captain
- Laboratory for Molecular Photonics, Department of Chemistry; University of Miami; 1301 Memorial Drive Florida 33146-0431 USA
| | - Françisco M. Raymo
- Laboratory for Molecular Photonics, Department of Chemistry; University of Miami; 1301 Memorial Drive Florida 33146-0431 USA
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Voiciuk V, Redeckas K, Martynaitis V, Steponavičiūtė R, Šačkus A, Vengris M. Redefining the established understanding of excitation dynamics of photochromic oxazines. Phys Chem Chem Phys 2015; 17:17828-37. [PMID: 26087921 DOI: 10.1039/c5cp02143j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Since the introduction of photochromic indolo-benzoxazines, difference absorption of these photoexcited compounds has been assigned to the ground state of the ring-opened isomer. This assignment relies on the alleged resemblance of the spectra of photo- and chemically induced forms. In this paper, we expose the issue of the discrepancy between the absorption spectra of photoproducts and the corresponding chemically opened forms. As a result, a substantial change in the current explanation of photodynamics of photochromic oxazines is proposed. The spectral features earlier ascribed to the photoproduct are suggested to arise due to the absorption of the triplet state. This hypothesis was tested and confirmed in acetonitrile by measuring the effect of oxygen quenching of photoproduct states. In view of this interpretation, light-induced ring opening does not occur in indolo-benzoxazines dissolved in acetonitrile, and, consequently these molecules should no longer be regarded as molecular switches. On the other hand, we show that methanol solution under UV light does produce small amounts of ring-opened form of the molecule.
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Affiliation(s)
- V Voiciuk
- Department of Quantum Electronics, Vilnius University, Saulėtekio al. 9, LT-10222 Vilnius, Lithuania.
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