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Prakash M, Rudharachari Maiyelvaganan K, Giri Lakshman N, Gopalakrishnan C, Hochlaf M. Microhydration of small protonated polyaromatic hydrocarbons: a first principles study. Phys Chem Chem Phys 2024; 26:17489-17503. [PMID: 38804893 DOI: 10.1039/d3cp06000d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Using first principles methodology, we investigate the microsolvation of protonated benzene (BzH+), protonated coronene (CorH+) and protonated dodecabenzocoronene (DbcH+). Gas phase complexes of these small protonated polyaromatic hydrocarbons (H+PAHs) with mono-, di-, and tri-hydrated water molecules are considered. Their most stable forms are presented, where we discuss their structural, energetic aromaticity and IR and UV spectral features. In particular, we focus on the analysis of the bonding and various non-bonded interactions between these protonated aromatics and water clusters. The strength of non-bonded interactions is quantified and correlated with their electron density profiles. Furthermore, insights into the interfacial interactions and stability of these complexes were obtained through non-covalent index and symmetry-adapted perturbation theory (SAPT0) analyses. We also discuss the effects of the extension of the π aromatic cloud on the water solvation of these protonated aromatics. In particular, we extended our predictions for the S0 → S1 and S0 → T1 wavelength transitions of micro hydrated H+PAHs to deduce those of these species solvated in aqueous solution. The present findings should be useful for understanding, at the microscopic level, the effects of water interacting with H+PAHs, which are relevant for organic chemistry, astrochemistry, atmospheric chemistry, combustion and materials science.
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Affiliation(s)
- Muthuramalingam Prakash
- Computational Chemistry Research Laboratory (CCRL), Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur-603 203, Chengalpattu, Tamil Nadu, India.
| | - K Rudharachari Maiyelvaganan
- Computational Chemistry Research Laboratory (CCRL), Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur-603 203, Chengalpattu, Tamil Nadu, India.
| | - N Giri Lakshman
- Computational Chemistry Research Laboratory (CCRL), Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur-603 203, Chengalpattu, Tamil Nadu, India.
| | - C Gopalakrishnan
- Computational Chemistry Research Laboratory (CCRL), Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur-603 203, Chengalpattu, Tamil Nadu, India.
| | - Majdi Hochlaf
- Université Gustave Eiffel, COSYS/IMSE, 5 Bd Descartes, 77454, Champs Sur Marne, France.
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Li J, Li N. Revisit on the assignment of electronic spectra of C11H9+ isomers. COMPUT THEOR CHEM 2023. [DOI: 10.1016/j.comptc.2023.114028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Feldman VI, Ryazantsev SV, Kameneva SV. Matrix isolation in laboratory astrochemistry: state-of-the-art, implications and perspective. RUSSIAN CHEMICAL REVIEWS 2021. [DOI: 10.1070/rcr4995] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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4
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Li J, Luo Y. The correct assignment of vibrationally-resolved absorption spectra of protonated anthracene isomers. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 244:118832. [PMID: 32871391 DOI: 10.1016/j.saa.2020.118832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 07/31/2020] [Accepted: 08/09/2020] [Indexed: 06/11/2023]
Abstract
The assignment of experimental optical absorption spectra of protonated anthracene has been under debate for years. It is complicated by the presence of rich vibronic spectral features and the possible co-occurrence of two isomers, 9H-An+ and 1H-An+. In this study, the vibrationally resolved absorption spectra of 9H-An+ and 1H-An+ have been calculated using time-dependent density functional theory. The calculated vibronic spectra profiles of 9H-An+ and 1H-An+ are in excellent agreement with the corresponding experimental results and provide unambiguously spectra assignments. It shows that the previously reported assignments based on vertical excitation energy are largely wrong. The onset located at 493.8 nm of the experimental spectrum can be assigned to the S0 → S1 transition of 9H-An+, while the origin band located at 453.5 nm corresponds to the S0 → S2 transition of 1H-An+.
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Affiliation(s)
- Junfeng Li
- College of Chemistry and Chemical Engineering, and Henan Key Laboratory of Function-Oriented Porous Materials, Luoyang Normal University, 471934 Luoyang, PR China; Department of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, S-106 91 Stockholm, Sweden.
| | - Yi Luo
- Department of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, S-106 91 Stockholm, Sweden; Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, Anhui, PR China
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Dontot L, Spiegelman F, Zamith S, Rapacioli M. Dependence upon charge of the vibrational spectra of small Polycyclic Aromatic Hydrocarbon clusters: the example of pyrene. THE EUROPEAN PHYSICAL JOURNAL. D, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 2020; 74:216. [PMID: 33597829 PMCID: PMC7116754 DOI: 10.1140/epjd/e2020-10081-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 07/18/2020] [Accepted: 09/01/2020] [Indexed: 06/12/2023]
Abstract
Infrared spectra are computed for neutral and cationic clusters of Polycyclic Aromatic Hydrocarbon clusters, namely( C 16 H 10 ) n = 1 , 4 ( 0 / + ) , using the Density Functional based Tight Binding scheme combined with a Configuration Interaction scheme (DFTB-CI) in the double harmonic approximation. Cross-comparison is carried out with DFT and simple DFTB. Similarly to the monomer cation, the IR spectra of cluster cations are characterized by a depletion of the intensity of the CH stretch modes around 3000 cm-1, with a weak revival for n = 3 and 4. The in-plane CCC modes in the region 1400-2000 cm-1 are enhanced while the CH bending modes in the range 700-1000 cm-1 are significantly weakened with respect to the monomer cation, in particular for n = 2. Finally, soft modes corresponding to diedral fluctuations of the monomers within the central stack of the ion structure, possibly mixed with monomer folding, are also observed in the region 70-120 cm-1.
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Affiliation(s)
- Léo Dontot
- Laboratoire de Chimie et Physique Quantique (LCPQ/IRSAMC), UMR5626, Université de Toulouse (UPS) and CNRS, 118 Route de Narbonne, F-31062 Toulouse, France
| | - Fernand Spiegelman
- Laboratoire de Chimie et Physique Quantique (LCPQ/IRSAMC), UMR5626, Université de Toulouse (UPS) and CNRS, 118 Route de Narbonne, F-31062 Toulouse, France
| | - Sébastien Zamith
- Laboratoire Collisions Agrégats Réactivité (LCAR/IRSAMC), UMR5589, Université de Toulouse (UPS) and CNRS, 118 Route de Narbonne, F-31062 Toulouse, France
| | - Mathias Rapacioli
- Laboratoire de Chimie et Physique Quantique (LCPQ/IRSAMC), UMR5626, Université de Toulouse (UPS) and CNRS, 118 Route de Narbonne, F-31062 Toulouse, France
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Li J, Luo Y, Zhang J. A theoretical study on vibronic spectra and photo conversation process of protonated naphthalenes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 205:520-527. [PMID: 30071500 DOI: 10.1016/j.saa.2018.07.074] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Revised: 07/18/2018] [Accepted: 07/24/2018] [Indexed: 06/08/2023]
Abstract
The equilibrium structures and vibrational frequencies of the ground state and several singlet low-lying excited states of alpha- and beta-protonated naphthalenes (α- and β-HN+) have been studied by time-dependent density-functional theory (TD-DFT). Within the Franck-Condon approximation, vibronic absorption spectra of α-HN+ and β-HN+, together with the vibronic emission spectrum of α-HN+, have been calculated. The obtained good agreement between the theoretical and experimental spectra enables to correctly assign vibronic features in both absorption and emission spectra. Moreover, the non-radiative deactivation pathway from the low-lying excite states to the ground state in α-HN+ and β-HN+, as well as the photo-induce proton transfer pathway, are investigated at the CASPT2/CASSCF/6-31G* level. Our study is helpful for understanding the photochemical behavior of these important polycyclic aromatic hydrocarbon molecules.
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Affiliation(s)
- Junfeng Li
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China; Department of Theoretical Chemistry and Biology, Royal Institute of Technology, SE-106 91 Stockholm, Sweden
| | - Yi Luo
- Department of Theoretical Chemistry and Biology, Royal Institute of Technology, SE-106 91 Stockholm, Sweden
| | - Jinglai Zhang
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China.
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Chin CH, Lin SH. Theoretical investigations of absorption and fluorescence spectra of protonated pyrene. Phys Chem Chem Phys 2016; 18:14569-79. [PMID: 27181017 DOI: 10.1039/c6cp00327c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The equilibrium geometry and 75 vibrational normal-mode frequencies of the ground and first excited states of protonated pyrene isomers were calculated and characterized in the adiabatic representation by using the complete active space self-consistent field (CASSCF) method. Electronic absorption spectra of solid neon matrixes in the wavelength range 495-415 nm were determined by Maier et al. and they were analyzed using time-dependent density functional theory calculations (TDDFT). CASSCF calculations and absorption and emission spectra simulations by one-photon excitation equations were used to optimize the excited and ground state structures of protonated pyrene isomers. The absorption band was attributed to the S0 → S1 electronic transition in 1H-Py(+), and a band origin was used at 20580.96 cm(-1). The displaced harmonic oscillator approximation and Franck-Condon approximation were used to simulate the absorption spectrum of the (1) (1)A' ← X[combining tilde](1)A' transition of 1H-Py(+), and the main vibronic transitions were assigned for the first ππ* state. It shows that the vibronic structures were dominated by one of the eight active totally symmetric modes, with ν15 being the most crucial. This indicates that the electronic transition of the S1((1)A') state calculated in the adiabatic representation effectively includes a contribution from the adiabatic vibronic coupling through Franck-Condon factors perturbed by harmonic oscillators. The present method can adequately reproduce experimental absorption and fluorescence spectra of a gas phase.
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Affiliation(s)
- Chih-Hao Chin
- National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu 30076, Taiwan.
| | - Sheng Hsien Lin
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, Taiwan and Institute of Atomic and Molecular Sciences, Academia Sinica, P. O. Box 23-166, Taipei 106, Taiwan
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8
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Theoretical studies on the vibrationally-resolved absorption and fluorescence spectra of H-Pyrene+ and H-Coronene+. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.10.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Dopfer O, Patzer A, Chakraborty S, Alata I, Omidyan R, Broquier M, Dedonder C, Jouvet C. Electronic and vibrational spectra of protonated benzaldehyde-water clusters, [BZ-(H2O)n≤5]H+: Evidence for ground-state proton transfer to solvent for n ≥ 3. J Chem Phys 2014; 140:124314. [DOI: 10.1063/1.4869341] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Zack LN, Maier JP. Laboratory spectroscopy of astrophysically relevant carbon species. Chem Soc Rev 2014; 43:4602-14. [PMID: 24676285 DOI: 10.1039/c4cs00049h] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Carbon is one of the most common elements in the solar system, with a fractional abundance of 10(-4) relative to hydrogen. Thus, it is not surprising that over 100 carbon-bearing species have been definitively detected in the interstellar medium via their rotational, infrared, and/or electronic transitions. In order to identify these species, laboratory spectra are needed for comparison to astronomical data. Challenges arise when obtaining laboratory spectra due to the instability of many of these molecules. Over the years, sensitive instrumentation and better techniques for producing these species in situ have been developed to achieve this goal. The use of complementary spectroscopic methods, such as matrix isolation, cavity ringdown, resonance enhanced multiphoton ionization, and ion trapping have led to the identification of several new carbon species at optical and ultraviolet wavelengths. Laboratory spectra have been compared to astronomical data in order to gain further insight into interstellar chemistry. In particular, attempts have been made to identify the carriers of the diffuse interstellar bands, however, with little success. These results are discussed in the following review.
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Affiliation(s)
- Lindsay N Zack
- Department of Chemistry, University of Basel, Klingelbergstrasse 80, CH-4056 Basel, Switzerland.
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Freidzon AY, Valiev RR, Berezhnoy AA. Ab initio simulation of pyrene spectra in water matrices. RSC Adv 2014. [DOI: 10.1039/c4ra05574h] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The absorption and emission spectra of free pyrene and pyrene in a water ice matrix were simulated ab initio with their vibronic profiles. Water ice was mimicked by a large cluster of explicit water molecules.
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Affiliation(s)
- A. Ya. Freidzon
- Photochemistry Center
- Russian Academy of Sciences
- 119421 Moscow, Russia
| | - R. R. Valiev
- Department of General and Inorganic Chemistry
- National Research Tomsk Polytechnic University
- 634050 Tomsk, Russia
- Tomsk State University
- 634050 Tomsk, Russia
| | - A. A. Berezhnoy
- Sternberg Astronomical Institute
- Lomonosov Moscow State University
- Universitetskii prospect 13
- 119992 Moscow, Russia
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Bahou M, Wu YJ, Lee YP. Infrared Spectra of Protonated Coronene and Its Neutral Counterpart in Solid Parahydrogen: Implications for Unidentified Interstellar Infrared Emission Bands. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201308971] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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13
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Infrared Spectra of Protonated Coronene and Its Neutral Counterpart in Solid Parahydrogen: Implications for Unidentified Interstellar Infrared Emission Bands. Angew Chem Int Ed Engl 2013; 53:1021-4. [DOI: 10.1002/anie.201308971] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Revised: 11/05/2013] [Indexed: 11/07/2022]
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Bahou M, Wu YJ, Lee YP. Infrared Spectra of Protonated Pyrene and Its Neutral Counterpart in Solid para-Hydrogen. J Phys Chem Lett 2013; 4:1989-1993. [PMID: 26283241 DOI: 10.1021/jz400923k] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Protonated polycyclic aromatic hydrocarbons (H(+)PAHs) have been reported to have infrared (IR) bands at wavenumbers near those of unidentified infrared (UIR) emission bands from interstellar objects. We produced 1-C16H11(+) and 1-C16H11 upon electron bombardment during matrix deposition of p-H2 containing pyrene (C16H10) in a small proportion. Intensities of absorption features of 1-C16H11(+) decreased after the matrix was maintained in darkness or irradiated with light at 365 nm, whereas those of 1-C16H11 increased. The observed line wavenumbers and relative intensities of 1-C16H11(+) and 1-C16H11 agree satisfactorily with the scaled vibrational wavenumbers and IR intensities predicted with the B3PW91/6-311++G(2d,2p) method. Our method, being relatively clean with negligible fragmentation, is applicable to larger H(+)PAH; it has the advantages of producing excellent IR spectra covering a broad spectral range with narrow lines and accurate intensities, so that structural identification among various isomers is feasible.
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Affiliation(s)
- Mohammed Bahou
- †Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University, 1001 Ta-Hsueh Road, Hsinchu 30010, Taiwan
| | - Yu-Jong Wu
- ‡National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu 30076, Taiwan
| | - Yuan-Pern Lee
- †Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University, 1001 Ta-Hsueh Road, Hsinchu 30010, Taiwan
- §Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan
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Patzer A, Schütz M, Jouvet C, Dopfer O. Experimental Observation and Quantum Chemical Characterization of the S1 ← S0 Transition of Protonated Naphthalene–Argon Clusters. J Phys Chem A 2013; 117:9785-93. [DOI: 10.1021/jp312581v] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alexander Patzer
- Institut für Optik und
Atomare Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Markus Schütz
- Institut für Optik und
Atomare Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Christophe Jouvet
- Laboratoire de Physique des Interactions
Ioniques et Moléculaires
(PIIM/UMR CNRS 7345), Aix Marseille Université, Avenue Escadrille Normandie-Niémen, 13397 Marseille cedex
20, France
| | - Otto Dopfer
- Institut für Optik und
Atomare Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
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