201
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Mechanism of adiabatic primary electron transfer in photosystem I: Femtosecond spectroscopy upon excitation of reaction center in the far-red edge of the QY band. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2017; 1858:895-905. [DOI: 10.1016/j.bbabio.2017.08.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 08/14/2017] [Accepted: 08/16/2017] [Indexed: 11/23/2022]
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202
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Jiang LL, Liu WL, Yang YQ. Raman and Infrared Spectra for All-trans-astaxanthin in Dimethyl Sulfoxide Solvent. CHINESE J CHEM PHYS 2017. [DOI: 10.1063/1674-0068/30/cjcp1703054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Li-lin Jiang
- Teaching Affairs Office, Hezhou University, Hezhou 542899, China
| | - Wei-long Liu
- Department of Physics, Harbin Institute of Technology, Harbin 150001, China
| | - Yan-qiang Yang
- National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, China
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203
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Yu J, Fu LM, Yu LJ, Shi Y, Wang P, Wang-Otomo ZY, Zhang JP. Carotenoid Singlet Fission Reactions in Bacterial Light Harvesting Complexes As Revealed by Triplet Excitation Profiles. J Am Chem Soc 2017; 139:15984-15993. [DOI: 10.1021/jacs.7b09809] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jie Yu
- Department
of Chemistry, Renmin University of China, Beijing 100872, P. R. China
| | - Li-Min Fu
- Department
of Chemistry, Renmin University of China, Beijing 100872, P. R. China
| | - Long-Jiang Yu
- Faculty
of Science, Ibaraki University, Mito 310-8512, Japan
- Department
of Biology, Faculty of Science, Okayama University, Okayama 700-8530, Japan
| | - Ying Shi
- Department
of Chemistry, Renmin University of China, Beijing 100872, P. R. China
| | - Peng Wang
- Department
of Chemistry, Renmin University of China, Beijing 100872, P. R. China
| | | | - Jian-Ping Zhang
- Department
of Chemistry, Renmin University of China, Beijing 100872, P. R. China
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204
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Balevičius V, Fox KF, Bricker WP, Jurinovich S, Prandi IG, Mennucci B, Duffy CDP. Fine control of chlorophyll-carotenoid interactions defines the functionality of light-harvesting proteins in plants. Sci Rep 2017; 7:13956. [PMID: 29066753 PMCID: PMC5655323 DOI: 10.1038/s41598-017-13720-6] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 09/26/2017] [Indexed: 11/08/2022] Open
Abstract
Photosynthetic antenna proteins can be thought of as "programmed solvents", which bind pigments at specific mutual orientations, thus tuning the overall energetic landscape and ensuring highly efficient light-harvesting. While positioning of chlorophyll cofactors is well understood and rationalized by the principle of an "energy funnel", the carotenoids still pose many open questions. Particularly, their short excited state lifetime (<25 ps) renders them potential energy sinks able to compete with the reaction centers and drastically undermine light-harvesting efficiency. Exploration of the orientational phase-space revealed that the placement of central carotenoids minimizes their interaction with the nearest chlorophylls in the plant antenna complexes LHCII, CP26, CP29 and LHCI. At the same time we show that this interaction is highly sensitive to structural perturbations, which has a profound effect on the overall lifetime of the complex. This links the protein dynamics to the light-harvesting regulation in plants by the carotenoids.
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Affiliation(s)
- Vytautas Balevičius
- School of Biological and Chemical Sciences, Queen Mary University of London, London, E1 4NS, UK
| | - Kieran F Fox
- School of Biological and Chemical Sciences, Queen Mary University of London, London, E1 4NS, UK
| | - William P Bricker
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Sandro Jurinovich
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, Via G. Moruzzi 13, Pisa, 56124, Italy
| | - Ingrid G Prandi
- Department of Chemistry, Federal University of Lavras, 37200-000, Lavras, Brazil
- Laboratory of Molecular Modeling Applied to the Chemical and Biological Defense, Military Institute of Engineering, Praça Gen, Tibúrcio, 80, Rio de Janeiro, Brazil
| | - Benedetta Mennucci
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, Via G. Moruzzi 13, Pisa, 56124, Italy
| | - Christopher D P Duffy
- School of Biological and Chemical Sciences, Queen Mary University of London, London, E1 4NS, UK.
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205
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Gacek DA, Moore AL, Moore TA, Walla PJ. Two-Photon Spectra of Chlorophylls and Carotenoid–Tetrapyrrole Dyads. J Phys Chem B 2017; 121:10055-10063. [DOI: 10.1021/acs.jpcb.7b08502] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniel A. Gacek
- Technische Universität Braunschweig, Institute for Physical and Theoretical Chemistry, Department of Biophysical
Chemistry, Gaußstraße.
17, 38106 Braunschweig, Germany
| | - Ana L. Moore
- School
of Molecular Sciences and Center for Bioenergy and Photosynthesis, Arizona State University, Tempe, Arizona 85287-1604, United States
| | - Thomas A. Moore
- School
of Molecular Sciences and Center for Bioenergy and Photosynthesis, Arizona State University, Tempe, Arizona 85287-1604, United States
| | - Peter Jomo Walla
- Technische Universität Braunschweig, Institute for Physical and Theoretical Chemistry, Department of Biophysical
Chemistry, Gaußstraße.
17, 38106 Braunschweig, Germany
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206
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Dokukina I, Marian CM, Weingart O. New Perspectives on an Old Issue: A Comparative MS-CASPT2 and OM2-MRCI Study of Polyenes and Protonated Schiff Bases. Photochem Photobiol 2017; 93:1345-1355. [PMID: 28833170 DOI: 10.1111/php.12833] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 08/13/2017] [Indexed: 11/29/2022]
Abstract
Polyenic systems are involved in light perception of numerous living organisms. Although a π-conjugated backbone is a common feature of all polyenes, their photophysics may vary. We provide a comparative quantum mechanical study of low-lying S1 and S2 excited states in short (3-5 double bonds) symmetric all-trans linear polyenes and corresponding protonated Schiff bases. In our investigation, we use the well-established ab initio multireference CASPT2 approach and benchmark the efficient semiempirical OM2-MRCI approach against it. For all protonated Schiff bases, MS-CASPT2 results in two distinct S1 minima with inverted and noninverted bond length pattern, respectively. We find that OM2-MRCI is a computationally affordable and reliable alternative to MS-CASPT2 for investigations of polyenic systems, particularly when highly demanding calculations (e.g. excited-state dynamics) need to be performed.
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Affiliation(s)
- Irina Dokukina
- Institut für Theoretische Chemie und Computerchemie, Heinrich-Heine Universität Düsseldorf, Düsseldorf, Germany
| | - Christel M Marian
- Institut für Theoretische Chemie und Computerchemie, Heinrich-Heine Universität Düsseldorf, Düsseldorf, Germany
| | - Oliver Weingart
- Institut für Theoretische Chemie und Computerchemie, Heinrich-Heine Universität Düsseldorf, Düsseldorf, Germany
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207
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Demchenko AP, Tomin VI, Chou PT. Breaking the Kasha Rule for More Efficient Photochemistry. Chem Rev 2017; 117:13353-13381. [DOI: 10.1021/acs.chemrev.7b00110] [Citation(s) in RCA: 210] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Alexander P. Demchenko
- Palladin
Institute of Biochemistry, National Academy of Sciences of Ukraine, 9 Leontovicha Street, Kyiv 01030, Ukraine
| | - Vladimir I. Tomin
- Institute
of Physics, Pomeranian University in Słupsk, ul. Arciszewskiego, 22b, Słupsk 76-200, Poland
| | - Pi-Tai Chou
- Department
of Chemistry, National Taiwan University, 1 Roosevelt Road Section 4, Taipei 106, Taiwan
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208
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Chenu A, Keren N, Paltiel Y, Nevo R, Reich Z, Cao J. Light Adaptation in Phycobilisome Antennas: Influence on the Rod Length and Structural Arrangement. J Phys Chem B 2017; 121:9196-9202. [DOI: 10.1021/acs.jpcb.7b07781] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Aurélia Chenu
- Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Singapore-MIT Alliance for Research and Technology, 138602 Singapore
| | - Nir Keren
- Department
of Plant and Environmental Sciences, Alexander Silberman Institute
of Life Sciences, Givat Ram, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel
| | - Yossi Paltiel
- Department
of Plant and Environmental Sciences, Alexander Silberman Institute
of Life Sciences, Givat Ram, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel
| | - Reinat Nevo
- Department
of Biomolecular Sciences, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Ziv Reich
- Department
of Biomolecular Sciences, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Jianshu Cao
- Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Singapore-MIT Alliance for Research and Technology, 138602 Singapore
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209
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Kuznetsova V, Southall J, Cogdell RJ, Fuciman M, Polívka T. Spectroscopic properties of the S1 state of linear carotenoids after excess energy excitation. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.03.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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210
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Razjivin AP, Lukashev EP, Kompanets VO, Kozlovsky VS, Ashikhmin AA, Chekalin SV, Moskalenko AA, Paschenko VZ. Excitation energy transfer from the bacteriochlorophyll Soret band to carotenoids in the LH2 light-harvesting complex from Ectothiorhodospira haloalkaliphila is negligible. PHOTOSYNTHESIS RESEARCH 2017; 133:289-295. [PMID: 28205063 DOI: 10.1007/s11120-017-0341-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 01/18/2017] [Indexed: 06/06/2023]
Abstract
Pathways of intramolecular conversion and intermolecular electronic excitation energy transfer (EET) in the photosynthetic apparatus of purple bacteria remain subject to debate. Here we experimentally tested the possibility of EET from the bacteriochlorophyll (BChl) Soret band to the singlet S2 level of carotenoids using femtosecond pump-probe measurements and steady-state fluorescence excitation and absorption measurements in the near-ultraviolet and visible spectral ranges. The efficiency of EET from the Soret band of BChl to S2 of the carotenoids in light-harvesting complex LH2 from the purple bacterium Ectothiorhodospira haloalkaliphila appeared not to exceed a few percent.
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Affiliation(s)
- A P Razjivin
- Belozersky Research Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia, 119991.
| | - E P Lukashev
- Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia, 119991
| | - V O Kompanets
- Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow, Russia, 142190
| | - V S Kozlovsky
- Belozersky Research Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia, 119991
| | - A A Ashikhmin
- Institute of Fundamental Problems of Biology, Russian Academy of Sciences, Pushchino, Moscow Region, Russia, 142290
| | - S V Chekalin
- Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, Moscow, Russia, 142190
| | - A A Moskalenko
- Institute of Fundamental Problems of Biology, Russian Academy of Sciences, Pushchino, Moscow Region, Russia, 142290
| | - V Z Paschenko
- Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia, 119991
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211
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A new energy transfer channel from carotenoids to chlorophylls in purple bacteria. Nat Commun 2017; 8:71. [PMID: 28694423 PMCID: PMC5504074 DOI: 10.1038/s41467-017-00120-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2016] [Accepted: 06/01/2017] [Indexed: 11/17/2022] Open
Abstract
It is unclear whether there is an intermediate dark state between the S2 and S1 states of carotenoids. Previous two-dimensional electronic spectroscopy measurements support its existence and its involvement in the energy transfer from carotenoids to chlorophylls, but there is still considerable debate on the origin of this dark state and how it regulates the energy transfer process. Here we use ab initio calculations on excited-state dynamics and simulated two-dimensional electronic spectrum of carotenoids from purple bacteria to provide evidence supporting that the dark state may be assigned to a new Ag+ state. Our calculations also indicate that groups on the conjugation backbone of carotenoids may substantially affect the excited-state levels and the energy transfer process. These results contribute to a better understanding of carotenoid excited states. Carotenoids harvest energy from light and transfer it to chlorophylls during photosynthesis. Here, Feng et al. perform ab initio calculations on excited-state dynamics and simulated 2D electronic spectrum of carotenoids, supporting the existence of a new excited state in carotenoids.
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212
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Bachmann M, Blacque O, Venkatesan K. Harnessing White-Light Luminescence via Tunable Singlet-and Triplet-Derived Emissions Based on Gold(III) Complexes. Chemistry 2017; 23:9451-9456. [PMID: 28589572 DOI: 10.1002/chem.201702341] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Indexed: 11/10/2022]
Abstract
White light emitting gold(III) complexes were synthesized by tuning the percentage of metal dπ contribution in the charge transfer. This was achieved through specific tailoring of the ligand scaffold, which led to increase in the HOMO π-energy properties, resulting in a decrease of efficiency on the intersystem crossing (ISC). As a consequence, monomolecular based singlet- and triplet-derived emission covering the entire visible spectrum with quantum yield up to 28 % and CIE-1931 chromaticity coordinates of (0.29, 0.33) to (0.32, 0.40) could be obtained. Furthermore, two complexes displayed excitation-dependent emission property due to hyper-ISC allowing the regulation of the ratio between fluorescence versus phosphorescence intensity and accomplish precise tuning of white light emission.
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Affiliation(s)
- Michael Bachmann
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
| | - Olivier Blacque
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
| | - Koushik Venkatesan
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057, Zurich, Switzerland.,Department of Chemistry and Biomolecular Sciences, Macquarie University, Sydney, NSW, 2019, Australia
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213
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Segatta F, Cupellini L, Jurinovich S, Mukamel S, Dapor M, Taioli S, Garavelli M, Mennucci B. A Quantum Chemical Interpretation of Two-Dimensional Electronic Spectroscopy of Light-Harvesting Complexes. J Am Chem Soc 2017; 139:7558-7567. [DOI: 10.1021/jacs.7b02130] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Francesco Segatta
- European Center for Theoretical Studies in Nuclear Physics and Related Areas (ECT*-FBK) and Trento Institute for Fundamental Physics and Applications (TIFPA-INFN), 38123 Trento, Italy
- Dipartimento
di Chimica Industriale “Toso Montanari”, University of Bologna, Viale del Risorgimento, 4, 40136 Bologna, Italy
| | - Lorenzo Cupellini
- Dipartimento
di Chimica e Chimica Industriale, University of Pisa, via G. Moruzzi
13, 56124 Pisa, Italy
| | - Sandro Jurinovich
- Dipartimento
di Chimica e Chimica Industriale, University of Pisa, via G. Moruzzi
13, 56124 Pisa, Italy
| | - Shaul Mukamel
- Department
of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Maurizio Dapor
- European Center for Theoretical Studies in Nuclear Physics and Related Areas (ECT*-FBK) and Trento Institute for Fundamental Physics and Applications (TIFPA-INFN), 38123 Trento, Italy
| | - Simone Taioli
- European Center for Theoretical Studies in Nuclear Physics and Related Areas (ECT*-FBK) and Trento Institute for Fundamental Physics and Applications (TIFPA-INFN), 38123 Trento, Italy
- Faculty
of Mathematics and Physics, Charles University, Prague 116 36, Czech Republic
| | - Marco Garavelli
- Dipartimento
di Chimica Industriale “Toso Montanari”, University of Bologna, Viale del Risorgimento, 4, 40136 Bologna, Italy
| | - Benedetta Mennucci
- Dipartimento
di Chimica e Chimica Industriale, University of Pisa, via G. Moruzzi
13, 56124 Pisa, Italy
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214
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Kuznetsova V, Chábera P, Litvín R, Polívka T, Fuciman M. Effect of Isomerization on Excited-State Dynamics of Carotenoid Fucoxanthin. J Phys Chem B 2017; 121:4438-4447. [DOI: 10.1021/acs.jpcb.7b02526] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Valentyna Kuznetsova
- Institute
of Physics and Biophysics, Faculty of Science, University of South Bohemia, Branišovská 1760, 37005 České Budějovice, Czech Republic
| | - Pavel Chábera
- Division
of Chemical Physics, Lund University, P.O. Box 124, Lund SE-22100, Sweden
| | - Radek Litvín
- Institute
of Physics and Biophysics, Faculty of Science, University of South Bohemia, Branišovská 1760, 37005 České Budějovice, Czech Republic
- Institute
of Plant Molecular Biology, Biological Centre, Czech Academy of Sciences, 37005 České Budějovice, Czech Republic
| | - Tomáš Polívka
- Institute
of Physics and Biophysics, Faculty of Science, University of South Bohemia, Branišovská 1760, 37005 České Budějovice, Czech Republic
- Institute
of Plant Molecular Biology, Biological Centre, Czech Academy of Sciences, 37005 České Budějovice, Czech Republic
| | - Marcel Fuciman
- Institute
of Physics and Biophysics, Faculty of Science, University of South Bohemia, Branišovská 1760, 37005 České Budějovice, Czech Republic
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215
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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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216
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Malý P, Ravensbergen J, Kennis JTM, van Grondelle R, Croce R, Mančal T, van Oort B. Polarization-controlled optimal scatter suppression in transient absorption spectroscopy. Sci Rep 2017; 7:43484. [PMID: 28262765 PMCID: PMC5337968 DOI: 10.1038/srep43484] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Accepted: 01/24/2017] [Indexed: 12/19/2022] Open
Abstract
Ultrafast transient absorption spectroscopy is a powerful technique to study fast photo-induced processes, such as electron, proton and energy transfer, isomerization and molecular dynamics, in a diverse range of samples, including solid state materials and proteins. Many such experiments suffer from signal distortion by scattered excitation light, in particular close to the excitation (pump) frequency. Scattered light can be effectively suppressed by a polarizer oriented perpendicular to the excitation polarization and positioned behind the sample in the optical path of the probe beam. However, this introduces anisotropic polarization contributions into the recorded signal. We present an approach based on setting specific polarizations of the pump and probe pulses, combined with a polarizer behind the sample. Together, this controls the signal-to-scatter ratio (SSR), while maintaining isotropic signal. We present SSR for the full range of polarizations and analytically derive the optimal configuration at angles of 40.5° between probe and pump and of 66.9° between polarizer and pump polarizations. This improves SSR by (or compared to polarizer parallel to probe). The calculations are validated by transient absorption experiments on the common fluorescent dye Rhodamine B. This approach provides a simple method to considerably improve the SSR in transient absorption spectroscopy.
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Affiliation(s)
- Pavel Malý
- Biophysics of Photosynthesis, Department of Physics and Astronomy, Faculty of Sciences, and LaserLaB Amsterdam, Vrije Universiteit Amsterdam, 1081 HV, Amsterdam, The Netherlands.,Institute of Physics, Faculty of Mathematics and Physics, Charles University, Czech Republic
| | - Janneke Ravensbergen
- Biophysics of Photosynthesis, Department of Physics and Astronomy, Faculty of Sciences, and LaserLaB Amsterdam, Vrije Universiteit Amsterdam, 1081 HV, Amsterdam, The Netherlands
| | - John T M Kennis
- Biophysics of Photosynthesis, Department of Physics and Astronomy, Faculty of Sciences, and LaserLaB Amsterdam, Vrije Universiteit Amsterdam, 1081 HV, Amsterdam, The Netherlands
| | - Rienk van Grondelle
- Biophysics of Photosynthesis, Department of Physics and Astronomy, Faculty of Sciences, and LaserLaB Amsterdam, Vrije Universiteit Amsterdam, 1081 HV, Amsterdam, The Netherlands
| | - Roberta Croce
- Biophysics of Photosynthesis, Department of Physics and Astronomy, Faculty of Sciences, and LaserLaB Amsterdam, Vrije Universiteit Amsterdam, 1081 HV, Amsterdam, The Netherlands
| | - Tomáš Mančal
- Institute of Physics, Faculty of Mathematics and Physics, Charles University, Czech Republic
| | - Bart van Oort
- Biophysics of Photosynthesis, Department of Physics and Astronomy, Faculty of Sciences, and LaserLaB Amsterdam, Vrije Universiteit Amsterdam, 1081 HV, Amsterdam, The Netherlands
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217
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Llansola-Portoles MJ, Gust D, Moore TA, Moore AL. Artificial photosynthetic antennas and reaction centers. CR CHIM 2017. [DOI: 10.1016/j.crci.2016.05.016] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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218
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Kosumi D, Kajikawa T, Sakaguchi K, Katsumura S, Hashimoto H. Excited state properties of β-carotene analogs incorporating a lactone ring. Phys Chem Chem Phys 2017; 19:3000-3009. [PMID: 28079227 DOI: 10.1039/c6cp06828f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Carotenoids possessing a carbonyl group along their polyene backbone exhibit unique excited state properties due to the occurrence of intramolecular charge transfer (ICT) in the excited state. In fact, the ICT characteristics of naturally occurring carbonyl carotenoids play an essential role in the highly efficient energy transfer that proceeds in aquatic photosynthetic antenna systems. In the present study, we synthesized two short-chain polyene carotenoids incorporating a lactone ring, denoted as BL-7 and BL-8, having seven and eight conjugated double bonds (n = 7 and 8), respectively. The excited state properties of these compounds were directly compared to those of their non-carbonyl counterparts to clarify the role of the carbonyl group in the generation of ICT. The energies of the optically allowed S2 states for BL-7 and BL-8 were found to be more than 0.3 eV (2400 cm-1) below those of non-carbonyl short β-carotene homologs. Ultrafast spectroscopic data demonstrated various solvent polarity-induced effects, including the appearance of stimulated emission in the near-IR region in the case of BL-7, and significant lifetime shortening of the lowest-lying singlet S1 excited states of both BL-7 and BL-8. These results suggest that these compounds exhibit ICT characteristics.
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Affiliation(s)
- Daisuke Kosumi
- Institute of Pulsed Power Science, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan.
| | - Takayuki Kajikawa
- Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, Gakuen, Sanda, Hyogo 669-1337, Japan
| | - Kazuhiko Sakaguchi
- Department of Chemistry, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Shigeo Katsumura
- Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, Gakuen, Sanda, Hyogo 669-1337, Japan and Department of Chemistry, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Hideki Hashimoto
- Department of Applied Chemistry for Environment, Faculty of Science and Technology, Kwansei Gakuin University, Japan.
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219
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Ghosh S, Bishop MM, Roscioli JD, LaFountain AM, Frank HA, Beck WF. Excitation Energy Transfer by Coherent and Incoherent Mechanisms in the Peridinin-Chlorophyll a Protein. J Phys Chem Lett 2017; 8:463-469. [PMID: 28042923 DOI: 10.1021/acs.jpclett.6b02881] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Excitation energy transfer from peridinin to chlorophyll (Chl) a is unusually efficient in the peridinin-chlorophyll a protein (PCP) from dinoflagellates. This enhanced performance is derived from the long intrinsic lifetime of 4.4 ps for the S2 (11Bu+) state of peridinin in PCP, which arises from the electron-withdrawing properties of its carbonyl substituent. Results from heterodyne transient grating spectroscopy indicate that S2 serves as the donor for two channels of energy transfer: a 30 fs process involving quantum coherence and delocalized peridinin-Chl states and an incoherent, 2.5 ps process initiated by dynamic exciton localization, which accompanies the formation of a conformationally distorted intermediate in 45 fs. The lifetime of the S2 state is lengthened in PCP by its intramolecular charge-transfer character, which increases the system-bath coupling and slows the torsional motions that promote nonradiative decay to the S1 (21Ag-) state.
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Affiliation(s)
- Soumen Ghosh
- Department of Chemistry, Michigan State University , East Lansing, Michigan 48824-1322, United States
| | - Michael M Bishop
- Department of Chemistry, Michigan State University , East Lansing, Michigan 48824-1322, United States
| | - Jerome D Roscioli
- Department of Chemistry, Michigan State University , East Lansing, Michigan 48824-1322, United States
| | - Amy M LaFountain
- Department of Chemistry, University of Connecticut , Storrs, Connecticut 06269-3036, United States
| | - Harry A Frank
- Department of Chemistry, University of Connecticut , Storrs, Connecticut 06269-3036, United States
| | - Warren F Beck
- Department of Chemistry, Michigan State University , East Lansing, Michigan 48824-1322, United States
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220
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Fox KF, Balevičius V, Chmeliov J, Valkunas L, Ruban AV, Duffy CDP. The carotenoid pathway: what is important for excitation quenching in plant antenna complexes? Phys Chem Chem Phys 2017; 19:22957-22968. [DOI: 10.1039/c7cp03535g] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Plant light-harvesting is regulated by the Non-Photochemical Quenching (NPQ) mechanism involving the slow trapping of excitation energy by carotenoids in the Photosystem II (PSII) antenna in response to high light.
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Affiliation(s)
- Kieran F. Fox
- School of Biological and Chemical Sciences
- Queen Mary University of London
- London E1 4NS
- UK
| | - Vytautas Balevičius
- School of Biological and Chemical Sciences
- Queen Mary University of London
- London E1 4NS
- UK
| | - Jevgenij Chmeliov
- Department of Theoretical Physics
- Faculty of Physics
- Vilnius University
- Sauletekio Ave. 9
- 10222 Vilnius
| | - Leonas Valkunas
- Department of Theoretical Physics
- Faculty of Physics
- Vilnius University
- Sauletekio Ave. 9
- 10222 Vilnius
| | - Alexander V. Ruban
- School of Biological and Chemical Sciences
- Queen Mary University of London
- London E1 4NS
- UK
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221
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Jia Y, Shi Y, Wang P, Zhang JP. Triplet excitation dynamics of β -carotene studied in three solvents by ns flash photolysis spectroscopy. CHINESE CHEM LETT 2017. [DOI: 10.1016/j.cclet.2016.05.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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222
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Šlouf V, Kuznetsova V, Fuciman M, de Carbon CB, Wilson A, Kirilovsky D, Polívka T. Ultrafast spectroscopy tracks carotenoid configurations in the orange and red carotenoid proteins from cyanobacteria. PHOTOSYNTHESIS RESEARCH 2017; 131:105-117. [PMID: 27612863 DOI: 10.1007/s11120-016-0302-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Accepted: 08/30/2016] [Indexed: 06/06/2023]
Abstract
A quenching mechanism mediated by the orange carotenoid protein (OCP) is one of the ways cyanobacteria protect themselves against photooxidative stress. Here, we present a femtosecond spectroscopic study comparing OCP and RCP (red carotenoid protein) samples binding different carotenoids. We confirmed significant changes in carotenoid configuration upon OCP activation reported by Leverenz et al. (Science 348:1463-1466. doi: 10.1126/science.aaa7234 , 2015) by comparing the transient spectra of OCP and RCP. The most important marker of these changes was the magnitude of the transient signal associated with the carotenoid intramolecular charge-transfer (ICT) state. While OCP with canthaxanthin exhibited a weak ICT signal, it increased significantly for canthaxanthin bound to RCP. On the contrary, a strong ICT signal was recorded in OCP binding echinenone excited at the red edge of the absorption spectrum. Because the carbonyl oxygen responsible for the appearance of the ICT signal is located at the end rings of both carotenoids, the magnitude of the ICT signal can be used to estimate the torsion angles of the end rings. Application of two different excitation wavelengths to study OCP demonstrated that the OCP sample contains two spectroscopically distinct populations, none of which is corresponding to the photoactivated product of OCP.
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Affiliation(s)
- Václav Šlouf
- Institute of Physics and Biophysics, Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05, České Budějovice, Czech Republic
| | - Valentyna Kuznetsova
- Institute of Physics and Biophysics, Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05, České Budějovice, Czech Republic
| | - Marcel Fuciman
- Institute of Physics and Biophysics, Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05, České Budějovice, Czech Republic
| | - Céline Bourcier de Carbon
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette, France
- Institut de Biologie et Technologies de Saclay (iBiTec-S), Commissariat à l'Energie Atomique (CEA), 91191, Gif-sur-Yvette, France
| | - Adjélé Wilson
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette, France
- Institut de Biologie et Technologies de Saclay (iBiTec-S), Commissariat à l'Energie Atomique (CEA), 91191, Gif-sur-Yvette, France
| | - Diana Kirilovsky
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette, France
- Institut de Biologie et Technologies de Saclay (iBiTec-S), Commissariat à l'Energie Atomique (CEA), 91191, Gif-sur-Yvette, France
| | - Tomáš Polívka
- Institute of Physics and Biophysics, Faculty of Science, University of South Bohemia, Branišovská 1760, 370 05, České Budějovice, Czech Republic.
- Institute of Plant Molecular Biology, Biological Centre, Czech Academy of Sciences, Branišovská 31, 370 05, České Budějovice, Czech Republic.
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223
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Komainda A, Lefrancois D, Dreuw A, Köppel H. Theoretical study of the initial non-radiative 1 B → 2 A transition in the fluorescence quenching of s-trans-butadiene: Electronic structure methods and quantum dynamics. Chem Phys 2017. [DOI: 10.1016/j.chemphys.2016.09.031] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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224
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Llansola-Portoles MJ, Sobotka R, Kish E, Shukla MK, Pascal AA, Polívka T, Robert B. Twisting a β-Carotene, an Adaptive Trick from Nature for Dissipating Energy during Photoprotection. J Biol Chem 2016; 292:1396-1403. [PMID: 27994060 DOI: 10.1074/jbc.m116.753723] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Revised: 11/14/2016] [Indexed: 11/06/2022] Open
Abstract
Cyanobacteria possess a family of one-helix high light-inducible proteins (Hlips) that are homologous to light-harvesting antenna of plants and algae. An Hlip protein, high light-inducible protein D (HliD) purified as a small complex with the Ycf39 protein is evaluated using resonance Raman spectroscopy. We show that the HliD binds two different β-carotenes, each present in two non-equivalent binding pockets with different conformations, having their (0,0) absorption maxima at 489 and 522 nm, respectively. Both populations of β-carotene molecules were in all-trans configuration and the absorption position of the farthest blue-shifted β-carotene was attributed entirely to the polarizability of the environment in its binding pocket. In contrast, the absorption maximum of the red-shifted β-carotene was attributed to two different factors: the polarizability of the environment in its binding pocket and, more importantly, to the conformation of its β-rings. This second β-carotene has highly twisted β-rings adopting a flat conformation, which implies that the effective conjugation length N is extended up to 10.5 modifying the energetic levels. This increase in N will also result in a lower S1 energy state, which may provide a permanent energy dissipation channel. Analysis of the carbonyl stretching region for chlorophyll a excitations indicates that the HliD binds six chlorophyll a molecules in five non-equivalent binding sites, with at least one chlorophyll a presenting a slight distortion to its macrocycle. The binding modes and conformations of HliD-bound pigments are discussed with respect to the known structures of LHCII and CP29.
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Affiliation(s)
- Manuel J Llansola-Portoles
- From the Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ Paris-Sud, Université Paris-Saclay, F-91198, Gif-sur-Yvette cedex, France,
| | - Roman Sobotka
- the Centre Algatech, Institute of Microbiology, Academy of Sciences of the Czech Republic, Třeboň, 379 81, Czech Republic, and
| | - Elizabeth Kish
- From the Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ Paris-Sud, Université Paris-Saclay, F-91198, Gif-sur-Yvette cedex, France
| | - Mahendra Kumar Shukla
- the Centre Algatech, Institute of Microbiology, Academy of Sciences of the Czech Republic, Třeboň, 379 81, Czech Republic, and
| | - Andrew A Pascal
- From the Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ Paris-Sud, Université Paris-Saclay, F-91198, Gif-sur-Yvette cedex, France
| | - Tomáš Polívka
- the Institute of Physics and Biophysics, Faculty of Science, University of South Bohemia, České Budějovice 370 01, Czech Republic
| | - Bruno Robert
- From the Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ Paris-Sud, Université Paris-Saclay, F-91198, Gif-sur-Yvette cedex, France
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225
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Lu L, Wu J, Wei L, Wu F. Temperature dependence of aggregated structure of β-carotene by absorption spectral experiment and simulation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 169:116-121. [PMID: 27348046 DOI: 10.1016/j.saa.2016.06.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 06/12/2016] [Accepted: 06/17/2016] [Indexed: 06/06/2023]
Abstract
β-carotene can self-assemble to form J- or H-type aggregate in hydrophilic environments, which is crucial for the proper functioning of biological system. Although several ways controlling the formation of the two types of aggregate in hydrated ethanol have been investigated in recent years, our study provided another way to control whether J- or H- β-carotene was formed and presented a method to investigate the aggregated structure. For this purpose, the aggregates of β-carotene formed at different temperatures were studied by UV-Vis spectra and a computational method based on Frenkel exciton was applied to simulate the absorption spectra to obtain the aggregated structure of the β-carotene. The analysis showed that β-carotene formed weakly coupled H-aggregate at 15°C in 1:1 ethanol-water solvent, and with the increase of temperature it tended to form J-type of aggregate. The absorption spectral simulation based on one-dimensional Frenkel exciton model revealed that good fit with the experiment was obtained with distance between neighbor molecules r=0.82nm, disorder of the system D=1500cm(-1) for H-type and r=1.04nm, D=1800cm(-1) for J-type.
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Affiliation(s)
- Liping Lu
- College of Science, Nanjing Agricultural University, Nanjing 210095, China
| | - Jie Wu
- The High Pressure Research Center of Science and Technology, Zhengzhou University of Light Industry, Zhengzhou 450002, China
| | - Liangshu Wei
- College of Science, Nanjing Agricultural University, Nanjing 210095, China
| | - Fang Wu
- College of Science, Nanjing Agricultural University, Nanjing 210095, China
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226
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Pinnola A, Staleva-Musto H, Capaldi S, Ballottari M, Bassi R, Polívka T. Electron transfer between carotenoid and chlorophyll contributes to quenching in the LHCSR1 protein from Physcomitrella patens. BIOCHIMICA ET BIOPHYSICA ACTA 2016; 1857:1870-1878. [PMID: 27614061 DOI: 10.1016/j.bbabio.2016.09.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 08/27/2016] [Accepted: 09/06/2016] [Indexed: 10/21/2022]
Abstract
Plants harvest photons for photosynthesis using light-harvesting complexes (LHCs)-an array of chlorophyll proteins that can reversibly switch from harvesting to energy-dissipation mode to prevent over-excitation and damage of the photosynthetic apparatus. In unicellular algae and lower plants this process requires the LHCSR proteins which senses over-acidification of the lumen trough protonatable residues exposed to the thylakoid lumen to activate quenching reactions. Further activation is provided by replacement of the violaxanthin ligand with its de-epoxidized product, zeaxanthin, also induced by excess light. We have produced the ppLHCSR1 protein from Physcomitrella patens by over-expression in tobacco and purified it in either its violaxanthin- or the zeaxanthin-binding form with the aim of analyzing their spectroscopic properties at either neutral or acidic pH. Using femtosecond spectroscopy, we demonstrated that the energy dissipation is achieved by two distinct quenching mechanism which are both activated by low pH. The first is present in both ppLHCSR1-Vio and ppLHCSR1-Zea and is characterized by 30-40ps time constant. The spectrum of the quenching product is reminiscent of a carotenoid radical cation, suggesting that the pH-induced quenching mechanism is likely electron transfer from the carotenoid to the excited Chl a. In addition, a second quenching channel populating the S1 state of carotenoid via energy transfer from Chl is found exclusively in the ppLHCSR1-Zea at pH5. These results provide proof of principle that more than one quenching mechanism may operate in the LHC superfamily and also help understanding the photoprotective role of LHCSR proteins and the evolution of LHC antennae.
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Affiliation(s)
- Alberta Pinnola
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Hristina Staleva-Musto
- Institute of Physics and Biophysics, Faculty of Science, University of South Bohemia, Branišovská 1760, 37005 České Budějovice, Czech Republic
| | - Stefano Capaldi
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Matteo Ballottari
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Roberto Bassi
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy.
| | - Tomáš Polívka
- Institute of Physics and Biophysics, Faculty of Science, University of South Bohemia, Branišovská 1760, 37005 České Budějovice, Czech Republic; Institute of Plant Molecular Biology, Biology Centre, Czech Academy of Sciences, Branišovská 31, České Budějovice, Czech Republic.
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227
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Gühlke M, Heiner Z, Kneipp J. Surface-Enhanced Raman and Surface-Enhanced Hyper-Raman Scattering of Thiol-Functionalized Carotene. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2016; 120:20702-20709. [PMID: 28077983 PMCID: PMC5215674 DOI: 10.1021/acs.jpcc.6b01895] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 04/21/2016] [Indexed: 05/28/2023]
Abstract
A thiol-modified carotene, 7'-apo-7'-(4-mercaptomethylphenyl)-β-carotene, was used to obtain nonresonant surface-enhanced Raman scattering (SERS) spectra of carotene at an excitation wavelength of 1064 nm, which were compared with resonant SERS spectra at an excitation wavelength of 532 nm. These spectra and surface-enhanced hyper-Raman scattering (SEHRS) spectra of the functionalized carotene were compared with the spectra of nonmodified β-carotene. Using SERS, normal Raman, and SEHRS spectra, all obtained for the resonant case, the interaction of the carotene molecules with silver nanoparticles, as well as the influence of the resonance enhancement and the SERS enhancement on the spectra, were investigated. The interaction with the silver surface occurs for both functionalized and nonfunctionalized β-carotene, but only the stronger functionalization-induced interaction enables the acquisition of nonresonant SERS spectra of β-carotene at low concentrations. The resonant SEHRS and SERS spectra are very similar. Nevertheless, the SEHRS spectra contain additional bands of infrared-active modes of carotene. Increased contributions from bands that experience low resonance enhancement point to a strong interaction between silver nanoparticles and electronic levels of the molecules, thereby giving rise to a decrease in the resonance enhancement in SERS and SEHRS.
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Affiliation(s)
- Marina Gühlke
- Department
of Chemistry, Humboldt University of Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany
| | - Zsuzsanna Heiner
- Department
of Chemistry, Humboldt University of Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany
- School
of Analytical Sciences Adlershof SALSA, Humboldt University of Berlin, Albert-Einstein-Straße 5-9, 12489 Berlin, Germany
| | - Janina Kneipp
- Department
of Chemistry, Humboldt University of Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany
- School
of Analytical Sciences Adlershof SALSA, Humboldt University of Berlin, Albert-Einstein-Straße 5-9, 12489 Berlin, Germany
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228
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Escudero D. Revising Intramolecular Photoinduced Electron Transfer (PET) from First-Principles. Acc Chem Res 2016; 49:1816-24. [PMID: 27575871 DOI: 10.1021/acs.accounts.6b00299] [Citation(s) in RCA: 166] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Photoinduced electron transfer (PET) plays relevant roles in many areas of chemistry, including charge separation processes in photovoltaics, natural and artificial photosynthesis, and photoluminescence sensors and switches. As in many other photochemical scenarios, the structural and energetic factors play relevant roles in determining the rates and efficiencies of PET and its competitive photodeactivation processes. Particularly, in the field of fluorescent sensors and switches, intramolecular PET is believed (in many cases without compelling experimental proof) to be responsible of the quench of fluorescence. There is an increasing experimental interest in fluorophore's molecular design and on achieving optimal excitation/emission spectra, excitation coefficients, and fluorescence quantum yields (importantly for bioimaging purposes), but less efforts are devoted to fundamental mechanistic studies. In this Account, I revise the origins of the fluorescence quenching in some of these systems with state-of-the-art quantum chemical tools. These studies go beyond the common strategy of analyzing frontier orbital energy diagrams and performing PET thermodynamics calculations. Instead, the potential energy surfaces (PESs) of the lowest-lying excited states are explored with time-dependent density functional theory (TD-DFT) and complete active space self-consistent field (CASSCF) calculations and the radiative and nonradiative decay rates from the involved excited states are computed from first-principles using a thermal vibration correlation function formalism. With such a strategy, this work reveals the real origins of the fluorescence quenching, herein entitled as dark-state quenching. Dark states (those that do not absorb or emit light) are often elusive to experiments and thus, computational investigations can provide novel insights into the actual photodeactivation mechanisms. The success of the dark-state quenching mechanism is demonstrated for a wide variety of fluorescent probes, including proton, cation and anion targets. Furthermore, this mechanism provides a general picture of the fluorescence quenching which englobes intramolecular charge-transfer (ICT), ratiometric quenching, and those radiationless mechanisms believed to be originated by PET. Finally, this Account provides for the first time a computational protocol to quantitatively estimate this phenomenon and provides the ingredients for the optimal design of fluorescent probes from first principles.
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Affiliation(s)
- Daniel Escudero
- CEISAM UMR CNRS
6230, Université de Nantes, 2 rue de la Houssinière, BP 92208, 44322 Cedex 3 Nantes, France
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229
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Ghosh S, Roscioli JD, Bishop MM, Gurchiek JK, LaFountain AM, Frank HA, Beck WF. Torsional Dynamics and Intramolecular Charge Transfer in the S2 (1(1)Bu(+)) Excited State of Peridinin: A Mechanism for Enhanced Mid-Visible Light Harvesting. J Phys Chem Lett 2016; 7:3621-3626. [PMID: 27571487 DOI: 10.1021/acs.jpclett.6b01642] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Of the carotenoids known in photosynthetic organisms, peridinin exhibits one of the highest quantum efficiencies for excitation energy transfer to chlorophyll (Chl) a acceptors. The mechanism for this enhanced performance involves an order-of-magnitude slowing of the S2 (1(1)Bu(+)) → S1 (2(1)Ag(-)) nonradiative decay pathway compared to carotenoids lacking carbonyl substitution. Using femtosecond transient grating spectroscopy with optical heterodyne detection, we have obtained the first evidence that the nonradiative decay of the S2 state of peridinin is promoted by large-amplitude torsional motions. The decay of an intermediate state termed Sx, which we assign to a twisted form of the S2 state, is substantially slowed by solvent friction in peridinin due to its intramolecular charge transfer (ICT) character.
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Affiliation(s)
- Soumen Ghosh
- Department of Chemistry, Michigan State University , East Lansing, Michigan 48824-1322, United States
| | - Jerome D Roscioli
- Department of Chemistry, Michigan State University , East Lansing, Michigan 48824-1322, United States
| | - Michael M Bishop
- Department of Chemistry, Michigan State University , East Lansing, Michigan 48824-1322, United States
| | - Jason K Gurchiek
- Department of Chemistry, Michigan State University , East Lansing, Michigan 48824-1322, United States
| | - Amy M LaFountain
- Department of Chemistry, University of Connecticut , Storrs, Connecticut 06269-3036, United States
| | - Harry A Frank
- Department of Chemistry, University of Connecticut , Storrs, Connecticut 06269-3036, United States
| | - Warren F Beck
- Department of Chemistry, Michigan State University , East Lansing, Michigan 48824-1322, United States
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230
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Balevičius V, Abramavicius D, Polívka T, Galestian
Pour A, Hauer J. A Unified Picture of S* in Carotenoids. J Phys Chem Lett 2016; 7:3347-3352. [PMID: 27509302 PMCID: PMC5011297 DOI: 10.1021/acs.jpclett.6b01455] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 08/10/2016] [Indexed: 05/29/2023]
Abstract
In π-conjugated chain molecules such as carotenoids, coupling between electronic and vibrational degrees of freedom is of central importance. It governs both dynamic and static properties, such as the time scales of excited state relaxation as well as absorption spectra. In this work, we treat vibronic dynamics in carotenoids on four electronic states (|S0⟩, |S1⟩, |S2⟩, and |Sn⟩) in a physically rigorous framework. This model explains all features previously associated with the intensely debated S* state. Besides successfully fitting transient absorption data of a zeaxanthin homologue, this model also accounts for previous results from global target analysis and chain length-dependent studies. Additionally, we are able to incorporate findings from pump-deplete-probe experiments, which were incompatible to any pre-existing model. Thus, we present the first comprehensive and unified interpretation of S*-related features, explaining them by vibronic transitions on either S1, S0, or both, depending on the chain length of the investigated carotenoid.
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Affiliation(s)
- Vytautas Balevičius
- Department
of Theoretical Physics, Faculty of Physics, Vilnius University, Sauletekio Avenue 9, Building 3, LT-10222 Vilnius, Lithuania
| | - Darius Abramavicius
- Department
of Theoretical Physics, Faculty of Physics, Vilnius University, Sauletekio Avenue 9, Building 3, LT-10222 Vilnius, Lithuania
| | - Tomáš Polívka
- Institute
of Physics and Biophysics, Faculty of Science, University of South Bohemia, Branišovská 1760, 37005 České Budějovice, Czech
Republic
| | | | - Jürgen Hauer
- Photonics
Institute, TU Wien, Gusshausstrasse
27, 1040 Vienna, Austria
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231
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Preda F, Kumar V, Crisafi F, Figueroa Del Valle DG, Cerullo G, Polli D. Broadband pump-probe spectroscopy at 20-MHz modulation frequency. OPTICS LETTERS 2016; 41:2970-2973. [PMID: 27367078 DOI: 10.1364/ol.41.002970] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We introduce an innovative high-sensitivity broadband pump-probe spectroscopy system, based on Fourier-transform detection, operating at 20-MHz modulation frequency. A common-mode interferometer employing birefringent wedges creates two phase-locked delayed replicas of the broadband probe pulse, interfering at a single photodetector. A single-channel lock-in amplifier demodulates the interferogram, whose Fourier transform provides the differential transmission spectrum. Our approach combines broad spectral coverage with high sensitivity, due to high-frequency modulation and detection. We demonstrate its performances by measuring two-dimensional differential transmission maps of a carbon nanotubes sample, simultaneously acquiring the signal over the entire 950-1350 nm range with 2.7·10-6 rms noise over 1.5 s integration time.
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232
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Dilbeck PL, Tang Q, Mothersole DJ, Martin EC, Hunter CN, Bocian DF, Holten D, Niedzwiedzki DM. Quenching Capabilities of Long-Chain Carotenoids in Light-Harvesting-2 Complexes from Rhodobacter sphaeroides with an Engineered Carotenoid Synthesis Pathway. J Phys Chem B 2016; 120:5429-43. [PMID: 27285777 PMCID: PMC4921951 DOI: 10.1021/acs.jpcb.6b03305] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
Six light-harvesting-2 complexes
(LH2) from genetically modified
strains of the purple photosynthetic bacterium Rhodobacter
(Rb.) sphaeroides were studied using static and ultrafast
optical methods and resonance Raman spectroscopy. These strains were
engineered to incorporate carotenoids for which the number of conjugated
groups (N = NC=C + NC=O) varies from 9 to 15.
The Rb. sphaeroides strains incorporate their native
carotenoids spheroidene (N = 10) and spheroidenone
(N = 11), as well as longer-chain analogues including
spirilloxanthin (N = 13) and diketospirilloxantion
(N = 15) normally found in Rhodospirillum
rubrum. Measurements of the properties of the carotenoid
first singlet excited state (S1) in antennas from the Rb. sphaeroides set show that carotenoid-bacteriochlorophyll a (BChl a) interactions are similar to
those in LH2 complexes from various other bacterial species and thus
are not significantly impacted by differences in polypeptide composition.
Instead, variations in carotenoid-to-BChl a energy
transfer are primarily regulated by the N-determined
energy of the carotenoid S1 excited state, which for long-chain
(N ≥ 13) carotenoids is not involved in energy
transfer. Furthermore, the role of the long-chain carotenoids switches
from a light-harvesting supporter (via energy transfer to BChl a) to a quencher of the BChl a S1 excited state B850*. This quenching is manifested as a substantial
(∼2-fold) reduction of the B850* lifetime and the B850* fluorescence
quantum yield for LH2 housing the longest carotenoids.
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Affiliation(s)
| | - Qun Tang
- Department of Chemistry, University of California Riverside , Riverside, California 92521, United States
| | - David J Mothersole
- Department of Molecular Biology and Biotechnology, University of Sheffield , Sheffield S10 2TN, United Kingdom
| | - Elizabeth C Martin
- Department of Molecular Biology and Biotechnology, University of Sheffield , Sheffield S10 2TN, United Kingdom
| | - C Neil Hunter
- Department of Molecular Biology and Biotechnology, University of Sheffield , Sheffield S10 2TN, United Kingdom
| | - David F Bocian
- Department of Chemistry, University of California Riverside , Riverside, California 92521, United States
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234
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Fiedor L, Fiedor J, Pilch M. Effects of Molecular Symmetry on the Electronic Transitions in Carotenoids. J Phys Chem Lett 2016; 7:1821-9. [PMID: 27138647 DOI: 10.1021/acs.jpclett.6b00637] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The aim of this work is the verification of symmetry effects on the electronic absorption spectra of carotenoids. The symmetry breaking in cis-β-carotenes and in carotenoids with nonlinear π-electron system is of virtually no effect on the dark transitions in these pigments, in spite of the loss of the inversion center and evident changes in their electronic structure. In the cis isomers, the S2 state couples with the higher excited states and the extent of this coupling depends on the position of the cis bend. A confrontation of symmetry properties of carotenoids with their electronic absorption and IR and Raman spectra shows that they belong to the C1 or C2 but not the C2h symmetry group, as commonly assumed. In these realistic symmetries all the electronic transitions are symmetry-allowed and the absence of some transitions, such as the dark S0 → S1 transition, must have another physical origin. Most likely it is a severe deformation of the carotenoid molecule in the S1 state, unachievable directly from the ground state, which means that the Franck-Condon factors for a vertical S0 → S1 transition are negligible because the final state is massively displaced along the vibrational coordinates. The implications of our findings have an impact on the understanding of the photophysics and functioning of carotenoids.
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Affiliation(s)
- Leszek Fiedor
- Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University , Gronostajowa 7, 30-387 Kraków, Poland
| | - Joanna Fiedor
- Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University , Gronostajowa 7, 30-387 Kraków, Poland
- Faculty of Physics and Applied Computer Science, AGH-University of Science and Technology , Mickiewicza 30, 30-059 Kraków, Poland
| | - Mariusz Pilch
- Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University , Gronostajowa 7, 30-387 Kraków, Poland
- Faculty of Chemistry, Jagiellonian University , Ingardena 3, 30-060 Kraków, Poland
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235
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Niedzwiedzki DM, Tronina T, Liu H, Staleva H, Komenda J, Sobotka R, Blankenship RE, Polívka T. Carotenoid-induced non-photochemical quenching in the cyanobacterial chlorophyll synthase-HliC/D complex. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2016; 1857:1430-1439. [PMID: 27133505 DOI: 10.1016/j.bbabio.2016.04.280] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Revised: 03/31/2016] [Accepted: 04/27/2016] [Indexed: 11/18/2022]
Abstract
Chl synthase (ChlG) is an important enzyme of the Chl biosynthetic pathway catalyzing attachment of phytol/geranylgeraniol tail to the chlorophyllide molecule. Here we have investigated the Flag-tagged ChlG (f.ChlG) in a complex with two different high-light inducible proteins (Hlips) HliD and HliC. The f.ChlG-Hlips complex binds a Chl a and three different carotenoids, β-carotene, zeaxanthin and myxoxanthophyll. Application of ultrafast time-resolved absorption spectroscopy performed at room and cryogenic temperatures revealed excited-state dynamics of complex-bound pigments. After excitation of Chl a in the complex, excited Chl a is efficiently quenched by a nearby carotenoid molecule via energy transfer from the Chl a Qy state to the carotenoid S1 state. The kinetic analysis of the spectroscopic data revealed that quenching occurs with a time constant of ~2ps and its efficiency is temperature independent. Even though due to its long conjugation myxoxanthophyll appears to be energetically best suited for role of Chl a quencher, based on comparative analysis and spectroscopic data we propose that β-carotene bound to Hlips acts as the quencher rather than myxoxanthophyll and zeaxanthin, which are bound at the f.ChlG and Hlips interface. The S1 state lifetime of the quencher has been determined to be 13ps at room temperature and 21ps at 77K. These results demonstrate that Hlips act as a conserved functional module that prevents photodamage of protein complexes during photosystem assembly or Chl biosynthesis.
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Affiliation(s)
- Dariusz M Niedzwiedzki
- Photosynthetic Antenna Research Center, Washington University in Saint Louis, 1 Brookings Drive, St. Louis, MO 63130, USA
| | - Tomasz Tronina
- Department of Chemistry, Wroclaw University of Environmental and Life Sciences, 50-375 Wroclaw, Poland
| | - Haijun Liu
- Photosynthetic Antenna Research Center, Washington University in Saint Louis, 1 Brookings Drive, St. Louis, MO 63130, USA; Department of Biology, Washington University in St. Louis, 1 Brookings, Drive. St. Louis, MO 63130, USA
| | - Hristina Staleva
- Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic
| | - Josef Komenda
- Centre Algatech, Institute of Microbiology, Academy of Sciences of the Czech Republic, Třeboň, Czech Republic
| | - Roman Sobotka
- Centre Algatech, Institute of Microbiology, Academy of Sciences of the Czech Republic, Třeboň, Czech Republic
| | - Robert E Blankenship
- Photosynthetic Antenna Research Center, Washington University in Saint Louis, 1 Brookings Drive, St. Louis, MO 63130, USA; Department of Biology, Washington University in St. Louis, 1 Brookings, Drive. St. Louis, MO 63130, USA; Department of Chemistry, Washington University in St. Louis, 1 Brookings, Drive. St. Louis, MO 63130, USA
| | - Tomáš Polívka
- Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic.
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236
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Ghosh S, Bishop MM, Roscioli JD, LaFountain AM, Frank HA, Beck WF. Femtosecond Heterodyne Transient Grating Studies of Nonradiative Deactivation of the S2 (11Bu+) State of Peridinin: Detection and Spectroscopic Assignment of an Intermediate in the Decay Pathway. J Phys Chem B 2016; 120:3601-14. [DOI: 10.1021/acs.jpcb.5b12753] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Soumen Ghosh
- Department
of Chemistry, Michigan State University, East Lansing, Michigan 48824-1322 United States
| | - Michael M. Bishop
- Department
of Chemistry, Michigan State University, East Lansing, Michigan 48824-1322 United States
| | - Jerome D. Roscioli
- Department
of Chemistry, Michigan State University, East Lansing, Michigan 48824-1322 United States
| | - Amy M. LaFountain
- Department
of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3036 United States
| | - Harry A. Frank
- Department
of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3036 United States
| | - Warren F. Beck
- Department
of Chemistry, Michigan State University, East Lansing, Michigan 48824-1322 United States
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237
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Efficient light-harvesting using non-carbonyl carotenoids: Energy transfer dynamics in the VCP complex from Nannochloropsis oceanica. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2016; 1857:370-9. [DOI: 10.1016/j.bbabio.2015.12.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2015] [Revised: 12/21/2015] [Accepted: 12/24/2015] [Indexed: 12/31/2022]
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238
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Nairat M, Konar A, Lozovoy VV, Beck WF, Blanchard GJ, Dantus M. Controlling S2 Population in Cyanine Dyes Using Shaped Femtosecond Pulses. J Phys Chem A 2016; 120:1876-85. [PMID: 26935762 DOI: 10.1021/acs.jpca.6b01835] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Fast population transfer from higher to lower excited states occurs via internal conversion (IC) and is the basis of Kasha's rule, which states that spontaneous emission takes place from the lowest excited state of the same multiplicity. Photonic control over IC is of interest because it would allow direct influence over intramolecular nonradiative decay processes occurring in condensed phase. Here we tracked the S2 and S1 fluorescence yield for different cyanine dyes in solution as a function of linear chirp. For the cyanine dyes with polar solvation response IR144 and meso-piperidine substituted IR806, increased S2 emission was observed when using transform limited pulses, whereas chirped pulses led to increased S1 emission. The nonpolar solvated cyanine IR806, on the other hand, did not show S2 emission. A theoretical model, based on a nonperturbative solution of the equation of motion for the density matrix, is offered to explain and simulate the anomalous chirp dependence. Our findings, which depend on pulse properties beyond peak intensity, offer a photonic method to control S2 population thereby opening the door for the exploration of photochemical processes initiated from higher excited states.
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Affiliation(s)
- Muath Nairat
- Department of Chemistry, Michigan State University , East Lansing, Michigan 48824, United States
| | - Arkaprabha Konar
- Department of Chemistry, Michigan State University , East Lansing, Michigan 48824, United States
| | - Vadim V Lozovoy
- Department of Chemistry, Michigan State University , East Lansing, Michigan 48824, United States
| | - Warren F Beck
- Department of Chemistry, Michigan State University , East Lansing, Michigan 48824, United States
| | - G J Blanchard
- Department of Chemistry, Michigan State University , East Lansing, Michigan 48824, United States
| | - Marcos Dantus
- Department of Chemistry, Michigan State University , East Lansing, Michigan 48824, United States.,Department of Physics and Astronomy, Michigan State University , East Lansing, Michigan 48824, United States
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239
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Maiuri M, Réhault J, Carey AM, Hacking K, Garavelli M, Lüer L, Polli D, Cogdell RJ, Cerullo G. Ultra-broadband 2D electronic spectroscopy of carotenoid-bacteriochlorophyll interactions in the LH1 complex of a purple bacterium. J Chem Phys 2016; 142:212433. [PMID: 26049453 DOI: 10.1063/1.4919056] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
We investigate the excitation energy transfer (EET) pathways in the photosynthetic light harvesting 1 (LH1) complex of purple bacterium Rhodospirillum rubrum with ultra-broadband two-dimensional electronic spectroscopy (2DES). We employ a 2DES apparatus in the partially collinear geometry, using a passive birefringent interferometer to generate the phase-locked pump pulse pair. This scheme easily lends itself to two-color operation, by coupling a sub-10 fs visible pulse with a sub-15-fs near-infrared pulse. This unique pulse combination allows us to simultaneously track with extremely high temporal resolution both the dynamics of the photoexcited carotenoid spirilloxanthin (Spx) in the visible range and the EET between the Spx and the B890 bacterio-chlorophyll (BChl), whose Qx and Qy transitions peak at 585 and 881 nm, respectively, in the near-infrared. Global analysis of the one-color and two-color 2DES maps unravels different relaxation mechanisms in the LH1 complex: (i) the initial events of the internal conversion process within the Spx, (ii) the parallel EET from the first bright state S2 of the Spx towards the Qx state of the B890, and (iii) the internal conversion from Qx to Qy within the B890.
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Affiliation(s)
- Margherita Maiuri
- CNR-IFN, Dipartimento di Fisica, Politecnico di Milano, P.zza L. da Vinci 32, Milano 20133, Italy
| | - Julien Réhault
- CNR-IFN, Dipartimento di Fisica, Politecnico di Milano, P.zza L. da Vinci 32, Milano 20133, Italy
| | - Anne-Marie Carey
- Glasgow Biomedical Research Centre, IBLS, University of Glasgow, 126 Place, Glasgow G12 8TA, Scotland, United Kingdom
| | - Kirsty Hacking
- Glasgow Biomedical Research Centre, IBLS, University of Glasgow, 126 Place, Glasgow G12 8TA, Scotland, United Kingdom
| | - Marco Garavelli
- Dipartimento di Chimica "G. Ciamician," Università di Bologna, Via Selmi 2, IT-40126 Bologna, Italy
| | - Larry Lüer
- Madrid Institute for Advanced Studies, IMDEA Nanociencia, Madrid, Spain
| | - Dario Polli
- CNR-IFN, Dipartimento di Fisica, Politecnico di Milano, P.zza L. da Vinci 32, Milano 20133, Italy
| | - Richard J Cogdell
- Glasgow Biomedical Research Centre, IBLS, University of Glasgow, 126 Place, Glasgow G12 8TA, Scotland, United Kingdom
| | - Giulio Cerullo
- CNR-IFN, Dipartimento di Fisica, Politecnico di Milano, P.zza L. da Vinci 32, Milano 20133, Italy
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240
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Perlík V, Seibt J, Cranston LJ, Cogdell RJ, Lincoln CN, Savolainen J, Šanda F, Mančal T, Hauer J. Vibronic coupling explains the ultrafast carotenoid-to-bacteriochlorophyll energy transfer in natural and artificial light harvesters. J Chem Phys 2016; 142:212434. [PMID: 26049454 DOI: 10.1063/1.4919548] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The initial energy transfer steps in photosynthesis occur on ultrafast timescales. We analyze the carotenoid to bacteriochlorophyll energy transfer in LH2 Marichromatium purpuratum as well as in an artificial light-harvesting dyad system by using transient grating and two-dimensional electronic spectroscopy with 10 fs time resolution. We find that Förster-type models reproduce the experimentally observed 60 fs transfer times, but overestimate coupling constants, which lead to a disagreement with both linear absorption and electronic 2D-spectra. We show that a vibronic model, which treats carotenoid vibrations on both electronic ground and excited states as part of the system's Hamiltonian, reproduces all measured quantities. Importantly, the vibronic model presented here can explain the fast energy transfer rates with only moderate coupling constants, which are in agreement with structure based calculations. Counterintuitively, the vibrational levels on the carotenoid electronic ground state play the central role in the excited state population transfer to bacteriochlorophyll; resonance between the donor-acceptor energy gap and the vibrational ground state energies is the physical basis of the ultrafast energy transfer rates in these systems.
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Affiliation(s)
- Václav Perlík
- Institute of Physics, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 5, Prague 121 16, Czech Republic
| | - Joachim Seibt
- Institute of Physics, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 5, Prague 121 16, Czech Republic
| | - Laura J Cranston
- Institute of Molecular Cell and System Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow Biomedical Research Centre, 120 University Place, Glasgow G12 8TA, Scotland
| | - Richard J Cogdell
- Institute of Molecular Cell and System Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow Biomedical Research Centre, 120 University Place, Glasgow G12 8TA, Scotland
| | - Craig N Lincoln
- Photonics Institute, Vienna University of Technology, Gusshausstrasse 27, 1040 Vienna, Austria
| | - Janne Savolainen
- Department of Physical Chemistry II, Ruhr-University Bochum, 44780 Bochum, Germany
| | - František Šanda
- Institute of Physics, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 5, Prague 121 16, Czech Republic
| | - Tomáš Mančal
- Institute of Physics, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 5, Prague 121 16, Czech Republic
| | - Jürgen Hauer
- Photonics Institute, Vienna University of Technology, Gusshausstrasse 27, 1040 Vienna, Austria
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241
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Greco JA, LaFountain AM, Kinashi N, Shinada T, Sakaguchi K, Katsumura S, Magdaong NCM, Niedzwiedzki DM, Birge RR, Frank HA. Spectroscopic Investigation of the Carotenoid Deoxyperidinin: Direct Observation of the Forbidden S0 → S1 Transition. J Phys Chem B 2016; 120:2731-44. [DOI: 10.1021/acs.jpcb.6b00439] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Jordan A. Greco
- Department
of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269-3060, United States
| | - Amy M. LaFountain
- Department
of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269-3060, United States
| | - Naoto Kinashi
- Graduate
School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Tetsuro Shinada
- Graduate
School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Kazuhiko Sakaguchi
- Graduate
School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Shigeo Katsumura
- Graduate
School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Nikki Cecil M. Magdaong
- Department
of Biology, Washington University in Saint Louis, One Brookings
Drive, St. Louis, Missouri 63130, United States
| | - Dariusz M. Niedzwiedzki
- Photosynthetic
Antenna Research Center, Washington University in Saint Louis, One Brookings
Drive, St. Louis, Missouri 63130, United States
| | - Robert R. Birge
- Department
of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269-3060, United States
| | - Harry A. Frank
- Department
of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269-3060, United States
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242
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Adamec F, Greco JA, LaFountain AM, Magdaong NM, Fuciman M, Birge RR, Polívka T, Frank HA. Spectroscopic investigation of a brightly colored psittacofulvin pigment from parrot feathers. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.02.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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243
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Kosumi D, Horibe T, Sugisaki M, Cogdell RJ, Hashimoto H. Photoprotection Mechanism of Light-Harvesting Antenna Complex from Purple Bacteria. J Phys Chem B 2016; 120:951-6. [PMID: 26800035 DOI: 10.1021/acs.jpcb.6b00121] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Photosynthetic light-harvesting apparatus efficiently capture sunlight and transfer the energy to reaction centers, while they safely dissipate excess energy to surrounding environments for a protection of their organisms. In this study, we performed pump-probe spectroscopic measurements with a temporal window ranging from femtosecond to submillisecond on the purple bacterial antenna complex LH2 from Rhodobacter sphaeroides 2.4.1 to clarify its photoprotection functions. The observed excited state dynamics in the time range from subnanosecond to microsecond exhibits that the triplet-triplet excitation energy transfer from bacteriochlorophyll a to carotenoid takes place with a time constant of 16.7 ns. Furthermore, ultrafast spectroscopic data suggests that a molecular assembly of bacteriochlorophyll a in LH2 efficiently suppresses a generation of triple bacteriochlorophyll a.
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Affiliation(s)
- Daisuke Kosumi
- Institute of Pulsed Power Science, Kumamoto University , 2-39-1 Kurokami, Chuo-ku Kumamoto, 860-8555 Japan.,Department of Physics, Graduate School of Science and Technology, Kumamoto University , Chuo-ku Kumamoto, 860-8555 Japan
| | - Tomoko Horibe
- Department of Applied Chemistry for Environment, Faculty of Science and Technology, Kwansei Gakuin University , 2-1, Gakuen, Sanda, Hyogo 669-1337 Japan
| | - Mitsuru Sugisaki
- Department of Physics, Graduate School of Science, Osaka City University , 3-3-138 Sugimoto, Sumiyoshi-ku Osaka 558-8585, Japan
| | - Richard J Cogdell
- Glasgow Biomedical Research Centre, University of Glasgow, 126 University Place , Glasgow, G12 8QQ, Scotland, U.K
| | - Hideki Hashimoto
- Department of Applied Chemistry for Environment, Faculty of Science and Technology, Kwansei Gakuin University , 2-1, Gakuen, Sanda, Hyogo 669-1337 Japan
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244
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Li ZK, Dai GZ, Juneau P, Qiu BS. Capsular polysaccharides facilitate enhanced iron acquisition by the colonial cyanobacterium Microcystis sp. isolated from a freshwater lake. JOURNAL OF PHYCOLOGY 2016; 52:105-115. [PMID: 26987092 DOI: 10.1111/jpy.12372] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 10/29/2015] [Indexed: 06/05/2023]
Abstract
Microcystis sp., especially in its colonial form, is a common dominant species during cyanobacterial blooms in many iron-deficient water bodies. It is still not entirely clear, however, how the colonial forms of Microcystis acclimate to iron-deficient habitats, and the responses of unicellular and colonial forms to iron-replete and iron-deficient conditions were examined here. Growth rates and levels of photosynthetic pigments declined to a greater extent in cultures of unicellular Microcystis than in cultures of the colonial form in response to decreasing iron concentrations, resulting in the impaired photosynthetic performance of unicellular Microcystis as compared to colonial forms as measured by variable fluorescence and photosynthetic oxygen evolution. These results indicate that the light-harvesting ability and photosynthetic capacity of colonial Microcystis was less affected by iron deficiency than the unicellular form. The carotenoid contents and nonphotochemical quenching of colonial Microcystis were less reduced than those of the unicellular form under decreasing iron concentrations, indicating that the colonial morphology enhanced photoprotection and acclimation to iron-deficient conditions. Furthermore, large amounts of iron were detected in the capsular polysaccharides (CPS) of the colonies, and more iron was found to be attached to the colonial Microcystis CPS under decreasing iron conditions as compared to unicellular cultures. These results demonstrated that colonial Microcystis can acclimate to iron deficiencies better than the unicellular form, and that CPS plays an important role in their acclimation advantage in iron-deficient waters.
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Affiliation(s)
- Zheng-Ke Li
- School of Life Sciences, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, Central China Normal University, Wuhan, Hubei, 430079, China
| | - Guo-Zheng Dai
- School of Life Sciences, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, Central China Normal University, Wuhan, Hubei, 430079, China
| | - Philippe Juneau
- Department of Biological Sciences-TOXEN, Ecotoxicology of Aquatic Microorganisms Laboratory, Université du Québec à Montréal, CP8888 Succursale Centre-ville, Montréal, Québec, Canada, H3C 3P8
| | - Bao-Sheng Qiu
- School of Life Sciences, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, Central China Normal University, Wuhan, Hubei, 430079, China
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245
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Lyskov I, Kleinschmidt M, Marian CM. Redesign of the DFT/MRCI Hamiltonian. J Chem Phys 2016; 144:034104. [DOI: 10.1063/1.4940036] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Igor Lyskov
- Institute of Theoretical and Computational Chemistry, Heinrich-Heine-University Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
| | - Martin Kleinschmidt
- Institute of Theoretical and Computational Chemistry, Heinrich-Heine-University Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
| | - Christel M. Marian
- Institute of Theoretical and Computational Chemistry, Heinrich-Heine-University Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
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246
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Wang LL, Zhang L, Wang H, Zhang Y, Huang JT, Zhu H, Ying X, Ji LN, Liu HY. Photoinduced Electron Transfer between Anionic Corrole and DNA. J Phys Chem A 2016; 120:535-42. [PMID: 26752116 DOI: 10.1021/acs.jpca.5b11021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The interaction between a water-soluble anionic Ga(III) corrole [Ga(tpfc)(SO3Na)2] and calf thymus DNA (ct-DNA) has been investigated by using femtosecond transient absorption spectroscopy. A significant broadening from 570 to 585 nm of positive absorption band of the blend of Ga(tpfc)(SO3Na)2 and ct-DNA (Ga(tpfc)(SO3Na)2-ctDNA) has been observed from 0.15 to 0.50 ps after photoexcitation of Ga(tpfc)(SO3Na)2 into the Soret band. The control experiment has been performed on the model DNA ([poly(dG-dC)]2) rich in guanine bases, which exhibits a similar spectral broadening, whereas it is absent for [poly(dA-dT)]2 without guanine bases. The molecular orbital calculation shows that HOMO of Ga(tpfc)(SO3Na)2 is lower than that of guanine bases. The results of the electrochemical experiment show the reversible electron transfer (ET) between Ga(tpfc)(SO3Na)2 and guanine bases of ct-DNA is thermodynamically favorable. The dynamical analysis of the transient absorption spectra reveals that an ultrafast forward ET from the guanine bases to Ga(tpfc)(SO3Na)2 occurs within the pulse duration (156 fs), leading to the formation of an intermediate state. The following back ET to the ground state of Ga(tpfc)(SO3Na)2 may be accomplished in 520 fs.
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Affiliation(s)
- Li-Li Wang
- State Key Laboratory of Optoelectronics Materials and Technologies and ‡School of Chemistry and Chemical Engineering/MOE Laboratory of Bioinorganic and Synthetic Chemistry, Sun Yat-sen University , Guangzhou 510275, China.,Department of Chemistry and ∥Department of Applied Physics, South China University of Technology , Guangzhou 510641, China
| | - Lei Zhang
- State Key Laboratory of Optoelectronics Materials and Technologies and ‡School of Chemistry and Chemical Engineering/MOE Laboratory of Bioinorganic and Synthetic Chemistry, Sun Yat-sen University , Guangzhou 510275, China.,Department of Chemistry and ∥Department of Applied Physics, South China University of Technology , Guangzhou 510641, China
| | - Hui Wang
- State Key Laboratory of Optoelectronics Materials and Technologies and ‡School of Chemistry and Chemical Engineering/MOE Laboratory of Bioinorganic and Synthetic Chemistry, Sun Yat-sen University , Guangzhou 510275, China.,Department of Chemistry and ∥Department of Applied Physics, South China University of Technology , Guangzhou 510641, China
| | - Yang Zhang
- State Key Laboratory of Optoelectronics Materials and Technologies and ‡School of Chemistry and Chemical Engineering/MOE Laboratory of Bioinorganic and Synthetic Chemistry, Sun Yat-sen University , Guangzhou 510275, China.,Department of Chemistry and ∥Department of Applied Physics, South China University of Technology , Guangzhou 510641, China
| | - Jun-Teng Huang
- State Key Laboratory of Optoelectronics Materials and Technologies and ‡School of Chemistry and Chemical Engineering/MOE Laboratory of Bioinorganic and Synthetic Chemistry, Sun Yat-sen University , Guangzhou 510275, China.,Department of Chemistry and ∥Department of Applied Physics, South China University of Technology , Guangzhou 510641, China
| | - He Zhu
- State Key Laboratory of Optoelectronics Materials and Technologies and ‡School of Chemistry and Chemical Engineering/MOE Laboratory of Bioinorganic and Synthetic Chemistry, Sun Yat-sen University , Guangzhou 510275, China.,Department of Chemistry and ∥Department of Applied Physics, South China University of Technology , Guangzhou 510641, China
| | - Xiao Ying
- State Key Laboratory of Optoelectronics Materials and Technologies and ‡School of Chemistry and Chemical Engineering/MOE Laboratory of Bioinorganic and Synthetic Chemistry, Sun Yat-sen University , Guangzhou 510275, China.,Department of Chemistry and ∥Department of Applied Physics, South China University of Technology , Guangzhou 510641, China
| | - Liang-Nian Ji
- State Key Laboratory of Optoelectronics Materials and Technologies and ‡School of Chemistry and Chemical Engineering/MOE Laboratory of Bioinorganic and Synthetic Chemistry, Sun Yat-sen University , Guangzhou 510275, China.,Department of Chemistry and ∥Department of Applied Physics, South China University of Technology , Guangzhou 510641, China
| | - Hai-Yang Liu
- State Key Laboratory of Optoelectronics Materials and Technologies and ‡School of Chemistry and Chemical Engineering/MOE Laboratory of Bioinorganic and Synthetic Chemistry, Sun Yat-sen University , Guangzhou 510275, China.,Department of Chemistry and ∥Department of Applied Physics, South China University of Technology , Guangzhou 510641, China
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247
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Cupellini L, Jurinovich S, Prandi IG, Caprasecca S, Mennucci B. Photoprotection and triplet energy transfer in higher plants: the role of electronic and nuclear fluctuations. Phys Chem Chem Phys 2016; 18:11288-96. [DOI: 10.1039/c6cp01437b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Photosynthetic organisms employ several photoprotection strategies to avoid damage due to the excess energy in high light conditions.
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Affiliation(s)
- Lorenzo Cupellini
- Dipartimento di Chimica e Chimica Industriale
- University of Pisa
- 56124 Pisa
- Italy
| | - Sandro Jurinovich
- Dipartimento di Chimica e Chimica Industriale
- University of Pisa
- 56124 Pisa
- Italy
| | - Ingrid G. Prandi
- Dipartimento di Chimica e Chimica Industriale
- University of Pisa
- 56124 Pisa
- Italy
| | - Stefano Caprasecca
- Dipartimento di Chimica e Chimica Industriale
- University of Pisa
- 56124 Pisa
- Italy
| | - Benedetta Mennucci
- Dipartimento di Chimica e Chimica Industriale
- University of Pisa
- 56124 Pisa
- Italy
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248
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Miki T, Buckup T, Krause MS, Southall J, Cogdell RJ, Motzkus M. Vibronic coupling in the excited-states of carotenoids. Phys Chem Chem Phys 2016; 18:11443-53. [DOI: 10.1039/c5cp07542d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The ultrafast femtochemistry of carotenoids is governed by the interaction between electronic excited states, which has been explained by the relaxation dynamics within a few hundred femtoseconds from the lowest optically allowed excited state S2to the optically dark state S1.
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Affiliation(s)
- Takeshi Miki
- Physikalisch-Chemisches Institut
- Ruprecht-Karls-Universität Heidelberg
- D-69120 Heidelberg
- Germany
| | - Tiago Buckup
- Physikalisch-Chemisches Institut
- Ruprecht-Karls-Universität Heidelberg
- D-69120 Heidelberg
- Germany
| | - Marie S. Krause
- Physikalisch-Chemisches Institut
- Ruprecht-Karls-Universität Heidelberg
- D-69120 Heidelberg
- Germany
| | - June Southall
- College of Medical
- Veterinary, and Life Science
- University of Glasgow
- G12 8QQ Glasgow
- UK
| | - Richard J. Cogdell
- College of Medical
- Veterinary, and Life Science
- University of Glasgow
- G12 8QQ Glasgow
- UK
| | - Marcus Motzkus
- Physikalisch-Chemisches Institut
- Ruprecht-Karls-Universität Heidelberg
- D-69120 Heidelberg
- Germany
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249
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Kloz M, Weißenborn J, Polívka T, Frank HA, Kennis JTM. Spectral watermarking in femtosecond stimulated Raman spectroscopy: resolving the nature of the carotenoid S* state. Phys Chem Chem Phys 2016; 18:14619-28. [DOI: 10.1039/c6cp01464j] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A new method for recording femtosecond stimulated Raman spectra was developed that dramatically improves and automatizes baseline problems.
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Affiliation(s)
- Miroslav Kloz
- Department of Physics and Astronomy
- VU University Amsterdam
- 1081HV Amsterdam
- The Netherlands
- ELI-Beamlines
| | - Jörn Weißenborn
- Department of Physics and Astronomy
- VU University Amsterdam
- 1081HV Amsterdam
- The Netherlands
| | - Tomáš Polívka
- University of South Bohemia
- 370 05 České Budějovice
- Czech Republic
| | - Harry A. Frank
- Department of Chemistry
- University of Connecticut
- Storrs
- USA
| | - John T. M. Kennis
- Department of Physics and Astronomy
- VU University Amsterdam
- 1081HV Amsterdam
- The Netherlands
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250
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Abstract
Carotenoids are ubiquitous and essential pigments in photosynthesis. They absorb in the blue-green region of the solar spectrum and transfer the absorbed energy to (bacterio-)chlorophylls, and so expand the wavelength range of light that is able to drive photosynthesis. This is an example of singlet-singlet energy transfer, and so carotenoids serve to enhance the overall efficiency of photosynthetic light reactions. Carotenoids also act to protect photosynthetic organisms from the harmful effects of excess exposure to light. Triplet-triplet energy transfer from chlorophylls to carotenoids plays a key role in this photoprotective reaction. In the light-harvesting pigment-protein complexes from purple photosynthetic bacteria and chlorophytes, carotenoids have an additional role of structural stabilization of those complexes. In this article we review what is currently known about how carotenoids discharge these functions. The molecular architecture of photosynthetic systems will be outlined first to provide a basis from which to describe carotenoid photochemistry, which underlies most of their important functions in photosynthesis.
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Affiliation(s)
- Hideki Hashimoto
- The Osaka City University Advanced Research Institute for Natural Science and Technology (OCARINA), Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka, 558-8585, Japan.
- Department of Physics, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka, 558-8585, Japan.
| | - Chiasa Uragami
- Department of Physics, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka, 558-8585, Japan
| | - Richard J Cogdell
- Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8QQ, Scotland, UK
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