3
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Nenov A, Borrego-Varillas R, Oriana A, Ganzer L, Segatta F, Conti I, Segarra-Marti J, Omachi J, Dapor M, Taioli S, Manzoni C, Mukamel S, Cerullo G, Garavelli M. UV-Light-Induced Vibrational Coherences: The Key to Understand Kasha Rule Violation in trans-Azobenzene. J Phys Chem Lett 2018; 9:1534-1541. [PMID: 29504764 DOI: 10.1021/acs.jpclett.8b00152] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We combine sub-20 fs transient absorption spectroscopy with state-of-the-art computations to study the ultrafast photoinduced dynamics of trans-azobenzene (AB). We are able to resolve the lifetime of the ππ* state, whose decay within ca. 50 fs is correlated to the buildup of the nπ* population and to the emergence of coherences in the dynamics, to date unobserved. Nonlinear spectroscopy simulations call for the CNN in-plane bendings as the active modes in the subps photoinduced coherent dynamics out of the ππ* state. Radiative to kinetic energy transfer into these modes drives the system to a high-energy planar nπ*/ground state conical intersection, inaccessible upon direct excitation of the nπ* state, that triggers an ultrafast (0.45 ps) nonproductive decay of the nπ* state and is thus responsible for the observed Kasha rule violation in UV excited trans-AB. On the other hand, cis-AB is built only after intramolecular vibrational energy redistribution and population of the NN torsional mode.
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Affiliation(s)
- Artur Nenov
- Dipartimento di Chimica Industriale , Università degli Studi di Bologna , Viale del Risorgimento 4 , I-40136 Bologna , Italy
| | - Rocio Borrego-Varillas
- IFN-CNR, Dipartimento di Fisica , Politecnico di Milano , Piazza Leonardo da Vinci 32 , I-20133 Milano , Italy
| | - Aurelio Oriana
- IFN-CNR, Dipartimento di Fisica , Politecnico di Milano , Piazza Leonardo da Vinci 32 , I-20133 Milano , Italy
| | - Lucia Ganzer
- IFN-CNR, Dipartimento di Fisica , Politecnico di Milano , Piazza Leonardo da Vinci 32 , I-20133 Milano , Italy
| | - Francesco Segatta
- Dipartimento di Chimica Industriale , Università degli Studi di Bologna , Viale del Risorgimento 4 , I-40136 Bologna , Italy
- 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
| | - Irene Conti
- Dipartimento di Chimica Industriale , Università degli Studi di Bologna , Viale del Risorgimento 4 , I-40136 Bologna , Italy
| | - Javier Segarra-Marti
- Laboratoire de Chimie UMR 5182 , Université Lyon, ENS de Lyon, CNRS, Université Lyon 1 , 46 Allée d'Italie , FR-69342 Lyon , France
| | - Junko Omachi
- Institute for Photon Science and Technology , University of Tokyo , 7-3-1 Hongo , Bunkyo-ku, Tokyo 113-0033 , Japan
| | - 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 , Praha 8 , 180 00 Prague , Czech Republic
| | - Cristian Manzoni
- IFN-CNR, Dipartimento di Fisica , Politecnico di Milano , Piazza Leonardo da Vinci 32 , I-20133 Milano , Italy
| | - Shaul Mukamel
- Department of Chemistry , University of California , Irvine , California 92697-2025 , United States
| | - Giulio Cerullo
- IFN-CNR, Dipartimento di Fisica , Politecnico di Milano , Piazza Leonardo da Vinci 32 , I-20133 Milano , Italy
| | - Marco Garavelli
- Dipartimento di Chimica Industriale , Università degli Studi di Bologna , Viale del Risorgimento 4 , I-40136 Bologna , Italy
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Varsano D, Caprasecca S, Coccia E. Theoretical description of protein field effects on electronic excitations of biological chromophores. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2017; 29:013002. [PMID: 27830666 DOI: 10.1088/0953-8984/29/1/013002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Photoinitiated phenomena play a crucial role in many living organisms. Plants, algae, and bacteria absorb sunlight to perform photosynthesis, and convert water and carbon dioxide into molecular oxygen and carbohydrates, thus forming the basis for life on Earth. The vision of vertebrates is accomplished in the eye by a protein called rhodopsin, which upon photon absorption performs an ultrafast isomerisation of the retinal chromophore, triggering the signal cascade. Many other biological functions start with the photoexcitation of a protein-embedded pigment, followed by complex processes comprising, for example, electron or excitation energy transfer in photosynthetic complexes. The optical properties of chromophores in living systems are strongly dependent on the interaction with the surrounding environment (nearby protein residues, membrane, water), and the complexity of such interplay is, in most cases, at the origin of the functional diversity of the photoactive proteins. The specific interactions with the environment often lead to a significant shift of the chromophore excitation energies, compared with their absorption in solution or gas phase. The investigation of the optical response of chromophores is generally not straightforward, from both experimental and theoretical standpoints; this is due to the difficulty in understanding diverse behaviours and effects, occurring at different scales, with a single technique. In particular, the role played by ab initio calculations in assisting and guiding experiments, as well as in understanding the physics of photoactive proteins, is fundamental. At the same time, owing to the large size of the systems, more approximate strategies which take into account the environmental effects on the absorption spectra are also of paramount importance. Here we review the recent advances in the first-principle description of electronic and optical properties of biological chromophores embedded in a protein environment. We show their applications on paradigmatic systems, such as the light-harvesting complexes, rhodopsin and green fluorescent protein, emphasising the theoretical frameworks which are of common use in solid state physics, and emerging as promising tools for biomolecular systems.
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Affiliation(s)
- Daniele Varsano
- S3 Center, CNR Institute of Nanoscience, Via Campi 213/A, 41125 Modena, Italy
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8
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Corchado JC, Sánchez ML, Fdez. Galván I, Martín ME, Muñoz-Losa A, Barata-Morgado R, Aguilar MA. Theoretical Study of Solvent Effects on the Ground and Low-Lying Excited Free Energy Surfaces of a Push–Pull Substituted Azobenzene. J Phys Chem B 2014; 118:12518-30. [DOI: 10.1021/jp506876v] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Jose C. Corchado
- Área
de Química Física, Universidad de Extremadura, Avda
de Elvas s/n, 06071 Badajoz, Spain
| | - M. Luz Sánchez
- Área
de Química Física, Universidad de Extremadura, Avda
de Elvas s/n, 06071 Badajoz, Spain
| | - Ignacio Fdez. Galván
- Department
of Chemistry—Ångström, The Theoretical Chemistry
Programme, Uppsala University, P.O. Box 518, SE-751 20 Uppsala, Sweden
| | - M. Elena Martín
- Área
de Química Física, Universidad de Extremadura, Avda
de Elvas s/n, 06071 Badajoz, Spain
| | - Aurora Muñoz-Losa
- Área
de Química Física, Universidad de Extremadura, Avda
de Elvas s/n, 06071 Badajoz, Spain
| | - Rute Barata-Morgado
- Área
de Química Física, Universidad de Extremadura, Avda
de Elvas s/n, 06071 Badajoz, Spain
| | - Manuel A. Aguilar
- Área
de Química Física, Universidad de Extremadura, Avda
de Elvas s/n, 06071 Badajoz, Spain
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Altoè P, Haraszkiewicz N, Gatti FG, Wiering PG, Frochot C, Brouwer AM, Balkowski G, Shaw D, Woutersen S, Buma WJ, Zerbetto F, Orlandi G, Leigh DA, Garavelli M. Multistate Photo-Induced Relaxation and Photoisomerization Ability of Fumaramide Threads: A Computational and Experimental Study. J Am Chem Soc 2008; 131:104-17. [DOI: 10.1021/ja802531j] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Piero Altoè
- Dipartimento di Chimica “G.Ciamician”, Università di Bologna, via Selmi 2, 40126 Bologna, Italy, Van‘t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands, and School of Chemistry, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh, EH9 3JJ, United Kingdom
| | - Natalia Haraszkiewicz
- Dipartimento di Chimica “G.Ciamician”, Università di Bologna, via Selmi 2, 40126 Bologna, Italy, Van‘t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands, and School of Chemistry, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh, EH9 3JJ, United Kingdom
| | - Francesco G. Gatti
- Dipartimento di Chimica “G.Ciamician”, Università di Bologna, via Selmi 2, 40126 Bologna, Italy, Van‘t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands, and School of Chemistry, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh, EH9 3JJ, United Kingdom
| | - Piet G. Wiering
- Dipartimento di Chimica “G.Ciamician”, Università di Bologna, via Selmi 2, 40126 Bologna, Italy, Van‘t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands, and School of Chemistry, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh, EH9 3JJ, United Kingdom
| | - Céline Frochot
- Dipartimento di Chimica “G.Ciamician”, Università di Bologna, via Selmi 2, 40126 Bologna, Italy, Van‘t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands, and School of Chemistry, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh, EH9 3JJ, United Kingdom
| | - Albert M. Brouwer
- Dipartimento di Chimica “G.Ciamician”, Università di Bologna, via Selmi 2, 40126 Bologna, Italy, Van‘t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands, and School of Chemistry, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh, EH9 3JJ, United Kingdom
| | - Grzegorz Balkowski
- Dipartimento di Chimica “G.Ciamician”, Università di Bologna, via Selmi 2, 40126 Bologna, Italy, Van‘t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands, and School of Chemistry, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh, EH9 3JJ, United Kingdom
| | - Daniel Shaw
- Dipartimento di Chimica “G.Ciamician”, Università di Bologna, via Selmi 2, 40126 Bologna, Italy, Van‘t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands, and School of Chemistry, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh, EH9 3JJ, United Kingdom
| | - Sander Woutersen
- Dipartimento di Chimica “G.Ciamician”, Università di Bologna, via Selmi 2, 40126 Bologna, Italy, Van‘t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands, and School of Chemistry, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh, EH9 3JJ, United Kingdom
| | - Wybren Jan Buma
- Dipartimento di Chimica “G.Ciamician”, Università di Bologna, via Selmi 2, 40126 Bologna, Italy, Van‘t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands, and School of Chemistry, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh, EH9 3JJ, United Kingdom
| | - Francesco Zerbetto
- Dipartimento di Chimica “G.Ciamician”, Università di Bologna, via Selmi 2, 40126 Bologna, Italy, Van‘t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands, and School of Chemistry, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh, EH9 3JJ, United Kingdom
| | - Giorgio Orlandi
- Dipartimento di Chimica “G.Ciamician”, Università di Bologna, via Selmi 2, 40126 Bologna, Italy, Van‘t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands, and School of Chemistry, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh, EH9 3JJ, United Kingdom
| | - David A. Leigh
- Dipartimento di Chimica “G.Ciamician”, Università di Bologna, via Selmi 2, 40126 Bologna, Italy, Van‘t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands, and School of Chemistry, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh, EH9 3JJ, United Kingdom
| | - Marco Garavelli
- Dipartimento di Chimica “G.Ciamician”, Università di Bologna, via Selmi 2, 40126 Bologna, Italy, Van‘t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands, and School of Chemistry, University of Edinburgh, The King’s Buildings, West Mains Road, Edinburgh, EH9 3JJ, United Kingdom
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