1
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Brand C, Schmitt M. Vibronic coupling in serotonin studied by rotationally resolved electronic spectroscopy. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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2
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Marlton SJP, Trevitt A. Laser Photodissocation, Action Spectroscopy and Mass Spectrometry Unite to Detect and Separate Isomers. Chem Commun (Camb) 2022; 58:9451-9467. [DOI: 10.1039/d2cc02101c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The separation and detection of isomers remains a challenge for many areas of mass spectrometry. This article highlights laser photodissociation and ion mobility strategies that have been deployed to tackle...
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3
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Grupe M, Boden P, Di Martino‐Fumo P, Gui X, Bruschi C, Israil R, Schmitt M, Nieger M, Gerhards M, Klopper W, Riehn C, Bizzarri C, Diller R. Time-Resolved Spectroscopy and Electronic Structure of Mono-and Dinuclear Pyridyl-Triazole/DPEPhos-Based Cu(I) Complexes. Chemistry 2021; 27:15251-15270. [PMID: 34550622 PMCID: PMC8597052 DOI: 10.1002/chem.202102760] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Indexed: 12/20/2022]
Abstract
Chemical and spectroscopic characterization of the mononuclear photosensitizers [(DPEPhos)Cu(I)(MPyrT)]0/+ (CuL, CuLH) and their dinuclear analogues (Cu2 L', Cu2 L'H2 ), backed by (TD)DFT and high-level GW-Bethe-Salpeter equation calculations, exemplifies the complex influence of charge, nuclearity and structural flexibility on UV-induced photophysical pathways. Ultrafast transient absorption and step-scan FTIR spectroscopy reveal flattening distortion in the triplet state of CuLH as controlled by charge, which also appears to have a large impact on the symmetry of the long-lived triplet states in Cu2 L' and Cu2 L'H2 . Time-resolved luminescence spectroscopy (solid state), supported by transient photodissociation spectroscopy (gas phase), confirm a lifetime of some tens of μs for the respective triplet states, as well as the energetics of thermally activated delayed luminescence, both being essential parameters for application of these materials based on earth-abundant copper in photocatalysis and luminescent devices.
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Affiliation(s)
- Merten Grupe
- Department of PhysicsTU KaiserslauternErwin-Schrödinger-Straße 4667663KaiserslauternGermany
| | - Pit Boden
- Department of ChemistryTU KaiserslauternErwin-Schrödinger-Straße 5267663KaiserslauternGermany
| | - Patrick Di Martino‐Fumo
- Department of ChemistryTU KaiserslauternErwin-Schrödinger-Straße 5267663KaiserslauternGermany
| | - Xin Gui
- Institute of Physical ChemistryKarlsruhe Institute of Technology (KIT)Fritz-Haber-Weg 276131KarlsruheGermany
| | - Cecilia Bruschi
- Institute of Organic Chemistry (IOC)Karlsruhe Institute of Technology (KIT)Fritz-Haber-Weg 676131KarlsruheGermany
| | - Roumany Israil
- Department of ChemistryTU KaiserslauternErwin-Schrödinger-Straße 5267663KaiserslauternGermany
| | - Marcel Schmitt
- Department of ChemistryTU KaiserslauternErwin-Schrödinger-Straße 5267663KaiserslauternGermany
| | - Martin Nieger
- Department of ChemistryUniversity of HelsinkiA.I. Virtasen aukio 100014HelsinkiFinland
| | - Markus Gerhards
- Department of ChemistryTU KaiserslauternErwin-Schrödinger-Straße 5267663KaiserslauternGermany
- Research Center OPTIMASErwin-Schrödinger-Straße 4667663KaiserslauternGermany
| | - Wim Klopper
- Institute of Physical ChemistryKarlsruhe Institute of Technology (KIT)Fritz-Haber-Weg 276131KarlsruheGermany
| | - Christoph Riehn
- Department of ChemistryTU KaiserslauternErwin-Schrödinger-Straße 5267663KaiserslauternGermany
- Research Center OPTIMASErwin-Schrödinger-Straße 4667663KaiserslauternGermany
| | - Claudia Bizzarri
- Institute of Organic Chemistry (IOC)Karlsruhe Institute of Technology (KIT)Fritz-Haber-Weg 676131KarlsruheGermany
| | - Rolf Diller
- Department of PhysicsTU KaiserslauternErwin-Schrödinger-Straße 4667663KaiserslauternGermany
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4
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Zhang K, Ma L, Zhou M, Shi Y, Li S, Wang Y, Kong X. Wavelength-Dependent Ultraviolet Photodissociation of Protonated Tryptamine. J Phys Chem A 2020; 124:5280-5287. [PMID: 32536155 DOI: 10.1021/acs.jpca.0c02528] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Ultraviolet photodissociation (UVPD) experiments of protonated tryptamine ([Tryp+H]+) have been implemented by a Fourier transform ion cyclotron resonance (FTICR) mass spectrometer combined with a wavelength-tunable optical parametric oscillator (OPO) laser. UVPD mass spectra under different laser wavelengths have been obtained, in which the dependence of the yield of fragment ions on the laser wavelength was observed. The UVPD spectrum of [Tryp+H]+ has been obtained in the range of 210-310 nm. Besides the previously reported two competitive channels of H loss and NH3 loss, two important channels of losing CH2NH and CH2NH2 units were observed and further studied by UV-UV tandem mass spectrometry and theoretical calculations. Interestingly, results show that the pair of competitive channels of CH2NH loss and CH2NH2 loss are both from the McLafferty-type rearrangement caused by ππ* electronic excited states. After the excitation, the two different dissociation pathways produce two different ion-neutral complexes, respectively. The wavelength-dependent dissociation and the existing competitive channels shown in this study reflect the diversity of UVPD processes of such organic molecules.
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Affiliation(s)
- Kailin Zhang
- School of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China.,State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Lifu Ma
- School of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China
| | - Min Zhou
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China.,Department of Physics, Anhui Normal University, Wuhu 241000, China
| | - Yingying Shi
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Shuqi Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | - Yan Wang
- School of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China
| | - Xianglei Kong
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China.,Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, China
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Bouakil M, Chirot F, Girod M, Dugourd P, MacAleese L. Secondary structure effects on internal proton transfer in poly-peptides. STRUCTURAL DYNAMICS (MELVILLE, N.Y.) 2020; 7:024302. [PMID: 32232075 PMCID: PMC7100371 DOI: 10.1063/4.0000003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 02/21/2020] [Indexed: 12/21/2022]
Abstract
A pump-probe approach was designed to determine the internal proton transfer (PT) rate in a series of poly-peptide radical cations containing both histidine and tryptophan. The proton transfer is driven by the gas-phase basicity difference between residues. The fragmentation scheme indicates that the gas-phase basicity of histidine is lower than that of radical tryptophan so that histidine is always pulling the proton away from tryptophan. However, the proton transfer requires the two basic sites to be in close proximity, which is rate limited by the peptide conformational dynamics. PT rate measurements were used to probe and explore the peptide conformational dynamics in several poly-glycines/prolines/alanines. For small and unstructured peptides, the PT rate decreases with the size, as expected from a statistical point of view in a flat conformational space. Conversely, if structured conformations are accessible, the structural flexibility of the peptide is decreased. This slows down the occurrence of conformations favorable to proton transfer. A dramatic decrease in the PT rates was observed for peptides HAnW, when n changes from 5 to 6. This is attributed to the onset of a stable helix for n = 6. No such discontinuity is observed for poly-glycines or poly-prolines. In HAnW, the gas-phase basicity and helix propensity compete for the position of the charge. Interestingly, in this competition between PT and helix formation in HA6W, the energy gain associated with helix formation is large enough to slow down the PT beyond experimental time but does not ultimately prevail over the proton preference for histidine.
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Affiliation(s)
- M Bouakil
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622 Lyon, France
| | - F Chirot
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut des Sciences Analytiques, F-69622 Lyon, France
| | - M Girod
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut des Sciences Analytiques, F-69622 Lyon, France
| | - P Dugourd
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622 Lyon, France
| | - L MacAleese
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622 Lyon, France
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6
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Soorkia S, Jouvet C, Grégoire G. UV Photoinduced Dynamics of Conformer-Resolved Aromatic Peptides. Chem Rev 2019; 120:3296-3327. [DOI: 10.1021/acs.chemrev.9b00316] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Satchin Soorkia
- Institut des Sciences Moléculaires d’Orsay (ISMO), CNRS, Univ. Paris-Sud, Université Paris-Saclay, F-91405 Orsay, France
| | - Christophe Jouvet
- CNRS, Aix Marseille Université, PIIM UMR 7345, 13397, Marseille, France
| | - Gilles Grégoire
- Institut des Sciences Moléculaires d’Orsay (ISMO), CNRS, Univ. Paris-Sud, Université Paris-Saclay, F-91405 Orsay, France
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8
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Kruppa SV, Bäppler F, Klopper W, Walg SP, Thiel WR, Diller R, Riehn C. Ultrafast excited-state relaxation of a binuclear Ag(i) phosphine complex in gas phase and solution. Phys Chem Chem Phys 2017; 19:22785-22800. [PMID: 28828458 DOI: 10.1039/c7cp04128d] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The [Ag2(dcpm)2]2+ phosphine complex displays multiexponential excited-state relaxation dynamics both in the gas phase and in solution.
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Affiliation(s)
- S. V. Kruppa
- Department of Chemistry
- TU Kaiserslautern
- D-67663 Kaiserslautern
- Germany
| | - F. Bäppler
- Department of Physics
- TU Kaiserslautern
- D-67663 Kaiserslautern
- Germany
| | - W. Klopper
- Karlsruhe Institute of Technology (KIT)
- Institute of Physical Chemistry
- D-76131 Karlsruhe
- Germany
| | - S. P. Walg
- Institute of Chemistry
- Inorganic Chemistry
- University of Graz
- 8010 Graz
- Austria
| | - W. R. Thiel
- Department of Chemistry
- TU Kaiserslautern
- D-67663 Kaiserslautern
- Germany
| | - R. Diller
- Department of Physics
- TU Kaiserslautern
- D-67663 Kaiserslautern
- Germany
| | - C. Riehn
- Department of Chemistry
- TU Kaiserslautern
- D-67663 Kaiserslautern
- Germany
- Forschungszentrum OPTIMAS
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9
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UV fragmentation and ultrafast dynamics of trinuclear silver/1-methylthymine and silver/1-methyluracil metal-base pairs in an ion trap. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.07.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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10
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Pino GA, Feraud G, Broquier M, Grégoire G, Soorkia S, Dedonder C, Jouvet C. Non-radiative processes in protonated diazines, pyrimidine bases and an aromatic azine. Phys Chem Chem Phys 2016; 18:20126-34. [PMID: 27110833 DOI: 10.1039/c6cp01345g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The excited state lifetimes of DNA bases are often very short due to very efficient non-radiative processes assigned to the ππ*-nπ* coupling. A set of protonated aromatic diazine molecules (pyridazine, pyrimidine and pyrazine C4H5N2(+)) and protonated pyrimidine DNA bases (cytosine, uracil and thymine), as well as the protonated pyridine (C5H6N(+)), have been investigated. For all these molecules except one tautomer of protonated uracil (enol-keto), electronic spectroscopy exhibits vibrational line broadening. Excited state geometry optimization at the CC2 level has been conducted to find out whether the excited state lifetimes measured from line broadening can be correlated to the calculated ordering of the ππ* and nπ* states and the ππ*-nπ* energy gap. The short lifetimes, observed when one nitrogen atom of the ring is not protonated, can be rationalized by relaxation of the ππ* state to the nπ* state or directly to the electronic ground state through ring puckering.
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Affiliation(s)
- Gustavo A Pino
- Instituto de Investigaciones en Físico Química de Córdoba (INFIQC) CONICET - UNC. Dpto. de Fisicoquímica - Facultad de Ciencias Químicas - Centro Láser de Ciencias Moleculares - Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA Córdoba, Argentina
| | - Géraldine Feraud
- CNRS, Aix Marseille Université, PIIM UMR 7345, 13397, Marseille, France.
| | - Michel Broquier
- Centre Laser de l'Université Paris-Sud (CLUPS/LUMAT), Univ. Paris-Sud, CNRS, IOGS, Université Paris-Saclay, F-91405 Orsay, France and Institut des Sciences Moléculaires d'Orsay (ISMO), CNRS, Univ. Paris Sud, Université Paris-Saclay, F-91405 Orsay, France
| | - Gilles Grégoire
- Centre Laser de l'Université Paris-Sud (CLUPS/LUMAT), Univ. Paris-Sud, CNRS, IOGS, Université Paris-Saclay, F-91405 Orsay, France and Institut des Sciences Moléculaires d'Orsay (ISMO), CNRS, Univ. Paris Sud, Université Paris-Saclay, F-91405 Orsay, France
| | - Satchin Soorkia
- Centre Laser de l'Université Paris-Sud (CLUPS/LUMAT), Univ. Paris-Sud, CNRS, IOGS, Université Paris-Saclay, F-91405 Orsay, France and Institut des Sciences Moléculaires d'Orsay (ISMO), CNRS, Univ. Paris Sud, Université Paris-Saclay, F-91405 Orsay, France
| | - Claude Dedonder
- CNRS, Aix Marseille Université, PIIM UMR 7345, 13397, Marseille, France.
| | - Christophe Jouvet
- CNRS, Aix Marseille Université, PIIM UMR 7345, 13397, Marseille, France.
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11
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Imanbaew D, Gelin MF, Riehn C. Rotational and vibrational dynamics in the excited electronic state of deprotonated and protonated fluorescein studied by time-resolved photofragmentation in an ion trap. STRUCTURAL DYNAMICS (MELVILLE, N.Y.) 2016; 3:043211. [PMID: 27376104 PMCID: PMC4902822 DOI: 10.1063/1.4953367] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 05/24/2016] [Indexed: 05/14/2023]
Abstract
Excited state dynamics of deprotonated and protonated fluorescein were investigated by polarization dependent femtosecond time-resolved pump-probe photofragmentation in a 3D ion trap. Transients of deprotonated fluorescein exhibit vibrational wavepacket dynamics with weak polarization dependence. Transients of protonated fluorescein show only effects of molecular alignment and rotational dephasing. The time resolved rotational anisotropy of protonated fluorescein is simulated by the calculated orientational correlation function. The observed differences between deprotonated and protonated fluorescein are ascribed to their different higher lying electronically excited states and corresponding structures. This is partially supported by time-dependent density functional theory calculations of the excited state structures.
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Affiliation(s)
- Dimitri Imanbaew
- Fachbereich Chemie, Technische Universität Kaiserslautern , Erwin-Schrödinger-Str. 52-54, D-67663 Kaiserslautern, Germany
| | - Maxim F Gelin
- Fakultät für Chemie, TU München , Lichtenbergstraße 4, D-85747 Garching, Germany
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12
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Inokuchi Y, Haino T, Sekiya R, Morishima F, Dedonder C, Féraud G, Jouvet C, Ebata T. UV photodissociation spectroscopy of cryogenically cooled gas phase host–guest complex ions of crown ethers. Phys Chem Chem Phys 2015; 17:25925-34. [DOI: 10.1039/c5cp01960e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Crown ethers show a dramatic effect on the electronic spectra and fragmentation patterns of guest species.
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Affiliation(s)
- Yoshiya Inokuchi
- Department of Chemistry
- Graduate School of Science
- Hiroshima University
- Higashi-Hiroshima 739-8526
- Japan
| | - Takeharu Haino
- Department of Chemistry
- Graduate School of Science
- Hiroshima University
- Higashi-Hiroshima 739-8526
- Japan
| | - Ryo Sekiya
- Department of Chemistry
- Graduate School of Science
- Hiroshima University
- Higashi-Hiroshima 739-8526
- Japan
| | - Fumiya Morishima
- Department of Chemistry
- Graduate School of Science
- Hiroshima University
- Higashi-Hiroshima 739-8526
- Japan
| | - Claude Dedonder
- CNRS
- Aix Marseille Université
- Physique des Interactions Ioniques et Moléculaires (PIIM) UMR 7345
- 13397 Marseille Cedex
- France
| | - Géraldine Féraud
- CNRS
- Aix Marseille Université
- Physique des Interactions Ioniques et Moléculaires (PIIM) UMR 7345
- 13397 Marseille Cedex
- France
| | - Christophe Jouvet
- CNRS
- Aix Marseille Université
- Physique des Interactions Ioniques et Moléculaires (PIIM) UMR 7345
- 13397 Marseille Cedex
- France
| | - Takayuki Ebata
- Department of Chemistry
- Graduate School of Science
- Hiroshima University
- Higashi-Hiroshima 739-8526
- Japan
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13
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Broquier M, Soorkia S, Grégoire G. A comprehensive study of cold protonated tyramine: UV photodissociation experiments and ab initio calculations. Phys Chem Chem Phys 2015; 17:25854-62. [DOI: 10.1039/c5cp01375e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Excited state properties of cold protonated ions are revealed by a combination of laser spectroscopy and ab initio calculations.
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Affiliation(s)
- Michel Broquier
- CNRS
- Université Paris Sud
- Institut des Sciences Moléculaires d'Orsay (ISMO) UMR 8214
- 91405 Orsay Cedex
- France
| | - Satchin Soorkia
- CNRS
- Université Paris Sud
- Institut des Sciences Moléculaires d'Orsay (ISMO) UMR 8214
- 91405 Orsay Cedex
- France
| | - Gilles Grégoire
- CNRS
- Université Paris Sud
- Institut des Sciences Moléculaires d'Orsay (ISMO) UMR 8214
- 91405 Orsay Cedex
- France
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14
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Soorkia S, Broquier M, Grégoire G. Conformer- and Mode-Specific Excited State Lifetimes of Cold Protonated Tyrosine Ions. J Phys Chem Lett 2014; 5:4349-4355. [PMID: 26273986 DOI: 10.1021/jz502387q] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The excited state lifetimes of conformer- and mode-selected cold protonated tyrosine have been measured for the first time through a picosecond pump-probe photodissociation scheme. Whereas the photofragmentation mechanism of protonated tyrosine ions strongly depends upon the interaction of the carboxylic acid group with the phenol ring, their excited state lifetimes are quite similar and decrease as the excess energy increases from 1.5 ns at the band origin to 900 ps and less than 500 ps for the 10(1) and 10(2) bands, respectively. Surprisingly, the excited state lifetime of the conformer with the anti orientation of the hydroxyl oxygen lone pair with respect to the ammonium group dramatically increases as compared to the others conformers up to 10 ns at the band origin and by more than a factor of 2 for the 10(1) band. The present experimental results clearly emphasize the subtle effect of the structural conformation on the excited state properties of molecular ions.
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Affiliation(s)
- Satchin Soorkia
- †CNRS, Université Paris Sud, Institut des Sciences Moléculaires d'Orsay (ISMO) UMR 8624, 91405 Orsay Cedex, France
| | - Michel Broquier
- †CNRS, Université Paris Sud, Institut des Sciences Moléculaires d'Orsay (ISMO) UMR 8624, 91405 Orsay Cedex, France
- ‡Université Paris Sud, CLUPS (Centre Laser de l'Université Paris Sud) LUMAT FR 2764, 91405 Orsay Cedex, France
| | - Gilles Grégoire
- §CNRS, Université Paris 13, Sorbonne Paris Cité, Laboratoire de Physique des Lasers, UMR 7538, F-93430 Villetaneuse, France
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15
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Féraud G, Broquier M, Dedonder-Lardeux C, Grégoire G, Soorkia S, Jouvet C. Photofragmentation spectroscopy of cold protonated aromatic amines in the gas phase. Phys Chem Chem Phys 2014; 16:5250-9. [DOI: 10.1039/c3cp54736a] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Staniforth M, Stavros VG. Recent advances in experimental techniques to probe fast excited-state dynamics in biological molecules in the gas phase: dynamics in nucleotides, amino acids and beyond. Proc Math Phys Eng Sci 2013; 469:20130458. [PMID: 24204191 PMCID: PMC3780818 DOI: 10.1098/rspa.2013.0458] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Accepted: 08/07/2013] [Indexed: 11/23/2022] Open
Abstract
In many chemical reactions, an activation barrier must be overcome before a chemical transformation can occur. As such, understanding the behaviour of molecules in energetically excited states is critical to understanding the chemical changes that these molecules undergo. Among the most prominent reactions for mankind to understand are chemical changes that occur in our own biological molecules. A notable example is the focus towards understanding the interaction of DNA with ultraviolet radiation and the subsequent chemical changes. However, the interaction of radiation with large biological structures is highly complex, and thus the photochemistry of these systems as a whole is poorly understood. Studying the gas-phase spectroscopy and ultrafast dynamics of the building blocks of these more complex biomolecules offers the tantalizing prospect of providing a scientifically intuitive bottom-up approach, beginning with the study of the subunits of large polymeric biomolecules and monitoring the evolution in photochemistry as the complexity of the molecules is increased. While highly attractive, one of the main challenges of this approach is in transferring large, and in many cases, thermally labile molecules into vacuum. This review discusses the recent advances in cutting-edge experimental methodologies, emerging as excellent candidates for progressing this bottom-up approach.
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Affiliation(s)
| | - Vasilios G. Stavros
- Department of Chemistry, University of Warwick, Library Road, Coventry CV4 7AL, UK
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Abraham S, Weiss RG. ‘Remote’ Adiabatic Photoinduced Deprotonation and Aggregate Formation of Amphiphilic N-Alkyl-N-methyl-3-(pyren-1-yl)propan-1-ammonium Chloride Salts. J Am Chem Soc 2011; 133:19250-6. [DOI: 10.1021/ja208674s] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shibu Abraham
- Department of Chemistry, Georgetown University, Washington, D.C. 20057-1227, United States
| | - Richard G. Weiss
- Department of Chemistry, Georgetown University, Washington, D.C. 20057-1227, United States
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18
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Kadhane U, Pérot M, Lucas B, Barat M, Fayeton J, Jouvet C, Ehlerding A, Kirketerp MB, Nielsen SB, Wyer J, Zettergren H. Photodissociation of protonated tryptamine and its supramolecular complex with 18-crown-6 ether: Dissociation times and channels, absorption spectra, and excited states calculations. Chem Phys Lett 2009. [DOI: 10.1016/j.cplett.2009.08.064] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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19
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Chakraborty S, Omidyan R, Alata I, Nielsen IB, Dedonder C, Broquier M, Jouvet C. Protonated Benzene Dimer: An Experimental and Ab Initio Study. J Am Chem Soc 2009; 131:11091-7. [DOI: 10.1021/ja903181k] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Shamik Chakraborty
- Centre Laser de l’Université Paris Sud (EA. 4127), Bât. 106, Univ. Paris-Sud 11 - 91405 Orsay Cedex, France, and Laboratoire de Photophysique Moléculaire du CNRS (UPR 3361), Bât. 210, Univ. Paris-Sud 11 - 91405 Orsay Cedex, France
| | - Reza Omidyan
- Centre Laser de l’Université Paris Sud (EA. 4127), Bât. 106, Univ. Paris-Sud 11 - 91405 Orsay Cedex, France, and Laboratoire de Photophysique Moléculaire du CNRS (UPR 3361), Bât. 210, Univ. Paris-Sud 11 - 91405 Orsay Cedex, France
| | - Ivan Alata
- Centre Laser de l’Université Paris Sud (EA. 4127), Bât. 106, Univ. Paris-Sud 11 - 91405 Orsay Cedex, France, and Laboratoire de Photophysique Moléculaire du CNRS (UPR 3361), Bât. 210, Univ. Paris-Sud 11 - 91405 Orsay Cedex, France
| | - Iben B. Nielsen
- Centre Laser de l’Université Paris Sud (EA. 4127), Bât. 106, Univ. Paris-Sud 11 - 91405 Orsay Cedex, France, and Laboratoire de Photophysique Moléculaire du CNRS (UPR 3361), Bât. 210, Univ. Paris-Sud 11 - 91405 Orsay Cedex, France
| | - Claude Dedonder
- Centre Laser de l’Université Paris Sud (EA. 4127), Bât. 106, Univ. Paris-Sud 11 - 91405 Orsay Cedex, France, and Laboratoire de Photophysique Moléculaire du CNRS (UPR 3361), Bât. 210, Univ. Paris-Sud 11 - 91405 Orsay Cedex, France
| | - Michel Broquier
- Centre Laser de l’Université Paris Sud (EA. 4127), Bât. 106, Univ. Paris-Sud 11 - 91405 Orsay Cedex, France, and Laboratoire de Photophysique Moléculaire du CNRS (UPR 3361), Bât. 210, Univ. Paris-Sud 11 - 91405 Orsay Cedex, France
| | - Christophe Jouvet
- Centre Laser de l’Université Paris Sud (EA. 4127), Bât. 106, Univ. Paris-Sud 11 - 91405 Orsay Cedex, France, and Laboratoire de Photophysique Moléculaire du CNRS (UPR 3361), Bât. 210, Univ. Paris-Sud 11 - 91405 Orsay Cedex, France
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20
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Rizzo TR, Stearns JA, Boyarkin OV. Spectroscopic studies of cold, gas-phase biomolecular ions. INT REV PHYS CHEM 2009. [DOI: 10.1080/01442350903069931] [Citation(s) in RCA: 242] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Elliott P, Furche F, Burke K. Excited States from Time-Dependent Density Functional Theory. REVIEWS IN COMPUTATIONAL CHEMISTRY 2009. [DOI: 10.1002/9780470399545.ch3] [Citation(s) in RCA: 118] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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22
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Kadhane U, Andersen JU, Ehlerding A, Hvelplund P, Kirketerp MBS, Lykkegaard MK, Nielsen SB, Panja S, Wyer JA, Zettergren H. Photodissociation of protonated tryptophan and alteration of dissociation pathways by complexation with crown ether. J Chem Phys 2008; 129:184304. [DOI: 10.1063/1.3009222] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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23
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Lucas B, Barat M, Fayeton JA, Perot M, Jouvet C, Grégoire G, Brøndsted Nielsen S. Mechanisms of photoinduced CαCβ bond breakage in protonated aromatic amino acids. J Chem Phys 2008; 128:164302. [DOI: 10.1063/1.2899648] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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24
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Lepère V, Lucas B, Barat M, Fayeton JA, Picard VJ, Jouvet C, Çarçabal P, Nielsen I, Dedonder-Lardeux C, Grégoire G, Fujii A. Comprehensive characterization of the photodissociation pathways of protonated tryptophan. J Chem Phys 2007; 127:134313. [DOI: 10.1063/1.2770458] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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25
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Grégoire G, Jouvet C, Dedonder C, Sobolewski AL. Ab initio Study of the Excited-State Deactivation Pathways of Protonated Tryptophan and Tyrosine. J Am Chem Soc 2007; 129:6223-31. [PMID: 17447763 DOI: 10.1021/ja069050f] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
In recent experiments, the excited-state lifetimes of protonated aromatic amino acids (TrpH+ and TyrH+) have been recorded by means of pump-probe photodissociation technique. The lifetime of TyrH+ is much longer than that of TrpH+, which has been initially rationalized on the basis of a simple phenomenological model. Besides, specific photofragments including the formation of radical cation after hydrogen loss are observed for TrpH+ that are not found for TyrH+. The ab initio calculations reported here for TrpH+ and TyrH+ using a coupled-cluster method are meant to track the rich photochemistry of these protonated amino acids following UV excitation.
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Affiliation(s)
- Gilles Grégoire
- Laboratoire de Physique des Lasers du CNRS, Institut Galilée, Université Paris 13, 93430 Villetaneuse, France.
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Grégoire G, Dedonder-Lardeux C, Jouvet C, Desfrançois C, Fayeton JA. Ultrafast excited state dynamics in protonated GWG and GYG tripeptides. Phys Chem Chem Phys 2007; 9:78-82. [PMID: 17164888 DOI: 10.1039/b613585d] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The excited state dynamics of two protonated tripeptides GWG and GYG has been investigated by pump/probe femtosecond measurements on photofragments, to explore the behavior of peptides where the terminal protonated amino group is not directly linked to the aromatic residue. The dynamics observed are short and surprisingly similar to the dynamics observed on the free protonated tryptophan and tyrosine aromatic amino acids. Specific photofragments observed for protonated GWG are related to the formation of a radical species WG degrees (+) after cleavage of the C(alpha)-N bond near the tryptophan residue.
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Affiliation(s)
- G Grégoire
- Laboratoire de Physique des Lasers, UMR7538 CNRS-Université Paris13, Institut Galilée, F-93430 Villetaneuse, France.
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27
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Grégoire G, Jouvet C, Dedonder C, Sobolewski A. On the role of dissociative πσ* states in the photochemistry of protonated tryptamine and tryptophan: An ab initio study. Chem Phys 2006. [DOI: 10.1016/j.chemphys.2005.11.005] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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28
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Antoine R, Broyer M, Chamot-Rooke J, Dedonder C, Desfrançois C, Dugourd P, Grégoire G, Jouvet C, Onidas D, Poulain P, Tabarin T, van der Rest G. Comparison of the fragmentation pattern induced by collisions, laser excitation and electron capture. Influence of the initial excitation. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2006; 20:1648-52. [PMID: 16637002 DOI: 10.1002/rcm.2489] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Collision-induced dissociation, laser-induced dissociation and electron-capture dissociation are compared on a singly and doubly protonated pentapeptide. The dissociation spectrum depends on the excitation mechanism and on the charge state of the peptide. The comparison of these results with the conformations obtained from Monte Carlo simulations suggests that the de-excitation mechanism following a laser or an electron-capture excitation is related to the initial geometry of the peptide.
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Affiliation(s)
- R Antoine
- Laboratoire de Spectrométrie Ionique et Moléculaire, UMR 5579 (Université Lyon I et CNRS), 43 Bd du 11 Novembre 1918, 69622 Villeurbanne cedex, France
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29
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Nolting D, Schultz T, Hertel IV, Weinkauf R. Excited state dynamics and fragmentation channels of the protonated dipeptide H2N-Leu-Trp-COOH. Phys Chem Chem Phys 2006; 8:5247-54. [PMID: 17203149 DOI: 10.1039/b609726j] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The excited state dynamics of the isolated and protonated peptide H(2)N-Leu-Trp-COOH are analyzed by fs pump-probe spectroscopy. The peptides are brought into the gas phase by electrospray ionization, and fs pump-probe excitation is detected by fragment ion formation. The pump laser addressed the excited pipi* state of the indole chromophore of the amino acid tryptophan. The subsequent excited state dynamics agreed with a biexponential decay with time constants of 500 fs and 10 ps. This is considerably shorter than the lifetime of neutral tryptophan in solution and in proteins, but similar to isolated, protonated tryptophan. Several models are discussed to explain the experimental results but the detailed quenching mechanism remains unresolved.
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Affiliation(s)
- Dirk Nolting
- Max Born Institute, Max-Born-Str. 2a, 12489 Berlin, Germany.
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30
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Grégoire G, Kang H, Dedonder-Lardeux C, Jouvet C, Desfrançois C, Onidas D, Lepere V, Fayeton JA. Statistical vs. non-statistical deactivation pathways in the UV photo-fragmentation of protonated tryptophan-leucine dipeptide. Phys Chem Chem Phys 2005; 8:122-8. [PMID: 16482251 DOI: 10.1039/b510406h] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The excited state dynamics of protonated tryptophan-leucine ions WLH+, generated in an electrospray source, is investigated by photo-induced fragmentation in the gas phase, using femtosecond laser pulses. Two main features arise from the experiment. Firstly, the initially excited pipi* state decays very quickly with 2 time constants of 1 and 10 ps. Secondly, the transient signals recorded on different fragments are not the same which indicates two competing primary fragmentation processes. One involves a direct dissociation from the excited state that gives evidence for a non-statistical deactivation path. The other is attributed to a statistical decay following internal conversion to the ground electronic surface.
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Affiliation(s)
- G Grégoire
- Laboratoire de Physique des Lasers du CNRS-Université Paris 13, Institut Galilée, 93430 Villetaneuse, France.
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Marian C, Nolting D, Weinkauf R. The electronic spectrum of protonated adenine: Theory and experiment. Phys Chem Chem Phys 2005; 7:3306-16. [PMID: 16240045 DOI: 10.1039/b507422c] [Citation(s) in RCA: 88] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work we present the results of a combined experimental and theoretical study concerned with the question how a proton changes the electronic spectrum and dynamics of adenine. In the experimental part, isolated adenine ions have been formed by electro-spray ionisation, stored, mass-selected and cooled in a Paul trap and dissociated by resonant photoexcitation with ns UV laser pulses. The S(0)-S1 spectrum of protonated adenine recorded by fragment ion detection lies in a similar energy range as the first pipi* transition of neutral 9H-adenine. It shows a flat onset with a broad substructure, indicating a large S(0)-S1 geometry shift and an ultra-short lifetime. In the theoretical part, relative energies of the ground and the excited states of the most important tautomers have been calculated by means of a combined density functional theory and multi-reference configuration interaction approach. Protonation at the nitrogen in position 1 of the neutral 9H-adenine tautomer yields the most stable protonated adenine species, 1H-9H-A+. The 3H-7H-A+ and the 3H-9H-A+ tautomers, formed by protonation of 7H- and 9H-adenine in 3-position, are higher in energy by 162 cm(-1) and 688 cm(-1), respectively. Other tautomers lie at considerably higher energies. Calculated vertical absorption spectra are reported for all investigated tautomers whereas geometry optimisations of excited states have been carried out only for the most interesting ones. The S1 state energies and geometries are found to depend on the protonation site. The theoretical data match best with the experimental onset of the spectrum for the 1H-9H-A+ tautomer although we cannot definitely exclude contributions to the experimental spectrum from the 3H-7H-A+ tautomer at higher energies. The vertical S(0)--> S1 excitation energy is similar to the one in neutral 9H-adenine. As for the neutral adenine, we find a conical intersection of the S1 of protonated adenine with the ground state in an out-of-plane coordinate but at lower energies and accessible without barrier.
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Affiliation(s)
- Christel Marian
- Institut für Theoretische Chemie, Heinrich-Heine-Universität, Universitätsstrasse 1, 40225, Düsseldorf, Germany
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