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Zheng H, Zhang G, Zhang C, Zhang S. Unravelling structural features of small molecules for photochemical transformation of environmental contaminants. WATER RESEARCH 2024; 261:122015. [PMID: 38996734 DOI: 10.1016/j.watres.2024.122015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 06/07/2024] [Accepted: 06/27/2024] [Indexed: 07/14/2024]
Abstract
Small molecules, including natural metabolites, organic matter decomposition products, and engineered oxidation byproducts, are widespread in aquatic environment. However, the limited understanding of the photochemical interactions of these small molecules with water pollutants hampers the development of effective environmental protection strategies. This study explores the structural features governing the photochemical transformation of toxic oxyanions by α- and β-dicarbonyl compounds. By integrating experimental observations with quantum chemical calculations, a robust correlation network was constructed. The correlation network reveals that the reactivity of small organic molecules with oxyanions could be quantitively predicted by their intrinsic properties, such as electronic transition energy, bond dissociation energy, molecular softness, molecular orbital gap, atomic charge, and molecular surface local ionization energy. This network maps the relationship between the molecular architecture of chemicals and their photochemical behaviors. This perspective offers fresh insights into the photochemical behaviors of small molecules in diverse environmental and chemical contexts and are helpful for developing advanced water treatment strategies toward a sustainable future.
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Affiliation(s)
- Hongcen Zheng
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Guoyang Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Chengyang Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Shujuan Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China.
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2
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Loreti A, Freixas VM, Avagliano D, Segatta F, Song H, Tretiak S, Mukamel S, Garavelli M, Govind N, Nenov A. WFOT: A Wave Function Overlap Tool between Single- and Multi-Reference Electronic Structure Methods for Spectroscopy Simulation. J Chem Theory Comput 2024; 20:4804-4819. [PMID: 38828948 DOI: 10.1021/acs.jctc.4c00310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
We report the development of a novel diagnostic tool, named wave function overlap tool (WFOT), designed to evaluate the overlap between wave functions computed at single-reference [i.e., time-dependent density functional theory or configuration interaction singles (CIS)] and multireference (i.e., CASSCF/CASPT2) electronic structure levels of theory. It relies on truncating the single- and multireference WFs to CIS-like expansions spanning the same configurational space and maximizing the molecular orbital overlap by means of a unitary transformation. To demonstrate the functionality of the tool, we calculate the transient spectrum of acetylacetone by evaluating excited state absorption signals with multireference quality on top of single-reference on-the-fly dynamics simulations. Semiautomatic spectra generation is facilitated by interfacing the tool with the COBRAMM package, which also allows one to use WFOT with several quantum chemistry codes such as Gaussian, NWChem, and OpenMolcas. Other exciting possibilities for the utilization of the code beyond the simulation of transient absorption spectroscopy are eventually discussed.
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Affiliation(s)
- Alessandro Loreti
- Dipartimento di Chimica Industriale "Toso Montanari", University of Bologna, Via Piero Gobetti 85, Bologna 40129, Italy
| | - Victor Manuel Freixas
- Department of Chemistry and Department of Physics and Astronomy, University of California, Irvine, California 92697, United States
| | - Davide Avagliano
- Dipartimento di Chimica Industriale "Toso Montanari", University of Bologna, Via Piero Gobetti 85, Bologna 40129, Italy
| | - Francesco Segatta
- Dipartimento di Chimica Industriale "Toso Montanari", University of Bologna, Via Piero Gobetti 85, Bologna 40129, Italy
| | - Huajing Song
- Physics and Chemistry of Materials, Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Sergei Tretiak
- Physics and Chemistry of Materials, Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
- Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Shaul Mukamel
- Department of Chemistry and Department of Physics and Astronomy, University of California, Irvine, California 92697, United States
| | - Marco Garavelli
- Dipartimento di Chimica Industriale "Toso Montanari", University of Bologna, Via Piero Gobetti 85, Bologna 40129, Italy
| | - Niranjan Govind
- Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Artur Nenov
- Dipartimento di Chimica Industriale "Toso Montanari", University of Bologna, Via Piero Gobetti 85, Bologna 40129, Italy
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3
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Rinaman J, Murray C. Acetylacetone Photolysis at 280 nm Studied by Velocity-Map Ion Imaging. J Phys Chem A 2023; 127:6687-6696. [PMID: 37535453 PMCID: PMC10440790 DOI: 10.1021/acs.jpca.3c01653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 07/17/2023] [Indexed: 08/05/2023]
Abstract
The photolysis of acetylacetone (AcAc) has been studied using velocity-map ion imaging with pulsed nanosecond lasers. The enolone tautomer of AcAc (CH3C(O)CH═C(OH)CH3) was excited in the strong UV absorption band by UV pulses at 280 nm, preparing the S2(ππ*) state, and products were probed after a short time delay by single-photon VUV ionization at 118.2 nm. Two-color UV + VUV time-of-flight mass spectra show enhancement of fragments at m/z = 15, 42, 43, 58, and 85 at the lowest UV pulse energies and depletion of the parent ion at m/z = 100. Ion images of the five major fragments are all isotropic, indicating dissociation lifetimes that are long on the timescale of molecular rotation but shorter than the laser pulse duration (<6 ns). The m/z = 15 and 85 fragments have identical momentum distributions with moderate translational energy release, suggesting that they are formed as a neutral product pair and likely via a Norrish type I dissociation of the enolone to form CH3 + C(O)CH═C(OH)CH3 over a barrier on a triplet surface. The m/z = 43 fragment may be tentatively assigned to the alternative Norrish type I pathway that produces CH3CO + CH2C(O)CH3 on S0 following phototautomerization to the diketone, although alternative mechanisms involving dissociative ionization of a larger primary photoproduct cannot be conclusively ruled out. The m/z = 42 and 58 fragments are not momentum-matched and consequently are not formed as a neutral pair via a unimolecular dissociation pathway on S0. They also likely originate from the dissociative ionization of primary photofragments. RRKM calculations suggest that unimolecular dissociation pathways that lead to molecular products on S0 are generally slow, implying an upper-limit lifetime of <46 ns after excitation at 280 nm. Time-dependent measurements suggest that the observed photofragments likely do not arise from dissociative ionization of energized AcAc S0*.
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Affiliation(s)
- Johanna
E. Rinaman
- Department of Chemistry, University
of California, Irvine, Irvine, California 92697, United States
| | - Craig Murray
- Department of Chemistry, University
of California, Irvine, Irvine, California 92697, United States
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4
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Rousselot-Pailley P, Mascetti J, Pizzo A, Aupetit C, Sobanska S, Coussan S. UV photoreaction pathways of acetylacetaldehyde trapped in cryogenic matrices. J Chem Phys 2023; 158:084302. [PMID: 36859085 DOI: 10.1063/5.0133636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The broadband UV photochemistry kinetics of acetylacetaldehyde, the hybrid form between malonaldehyde and acetylacetone (the two other most simple molecules exhibiting an intramolecular proton transfer), trapped in four cryogenic matrices, neon, nitrogen, argon, and xenon, has been followed by FTIR and UV spectroscopy. After deposition, only the two chelated forms are observed while they isomerize upon UV irradiation toward nonchelated species. From previous UV irradiation effects, we have already identified several nonchelated isomers, capable, in turn, of isomerizing and fragmenting; even fragmentation seems to be most unlikely due to cryogenic cages confinement. Based on these findings, we have attempted an approach to understand the reaction path of electronic relaxation. Indeed, we have demonstrated, in previous studies, that in the case of malonaldehyde, this electronic relaxation pathway proceeds through singlet states while it proceeds through triplet ones in the case of acetylacetone. We observed CO and CO2 formations when photochemistry is almost observed among nonchelated forms, i.e., when the parent molecule is almost totally consumed. In order to identify a triplet state transition, we have tried to observe a "heavy atom effect" by increasing the weight of the matrix gas, from Ne to Xe, and to quench the T1 state by doping the matrices with O2. It appears that, as in the case of acetylacetone, it is the nonchelated forms that fragment. It also appears that these fragmentations certainly take place in the T1 triplet state and originate in an Π* ← n transition.
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Affiliation(s)
- P Rousselot-Pailley
- Aix-Marseille Univ., Centrale Marseille, CNRS, iSm2 UMR 7313, Marseille, France
| | - J Mascetti
- Institut des Sciences Moléculaires, Université de Bordeaux 1, CNRS UMR 5255, Talence, France
| | - A Pizzo
- Aix-Marseille Univ., CNRS, PIIM, Marseille, France
| | - C Aupetit
- Institut des Sciences Moléculaires, Université de Bordeaux 1, CNRS UMR 5255, Talence, France
| | - S Sobanska
- Institut des Sciences Moléculaires, Université de Bordeaux 1, CNRS UMR 5255, Talence, France
| | - S Coussan
- Aix-Marseille Univ., CNRS, PIIM, Marseille, France
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5
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Wortmann S, Kutta RJ, Nuernberger P. Monitoring the photochemistry of a formazan over 15 orders of magnitude in time. Front Chem 2022; 10:983342. [PMID: 36247663 PMCID: PMC9554553 DOI: 10.3389/fchem.2022.983342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 08/23/2022] [Indexed: 11/13/2022] Open
Abstract
2,3,5-triphenyltetrazolium chloride (TTC) may convert into phenyl-benzo[c]tetrazolocinnolium chloride (PTC) and 1,3,5-triphenylformazan (TPF) under irradiation with light. The latter reaction, albeit enzymatically rather than photochemically, is used in so-called TTC assays indicating cellular respiration and cell growth. In this paper, we address the photochemistry of TPF with time-resolved spectroscopy on various time scales. TPF is stabilized by an intramolecular hydrogen bond and switches photochemically via an E-Z isomerization around an N=N double bond into another TPF-stereoisomer, from which further isomerizations around the C=N double bond of the phenylhydrazone group are possible. We investigate the underlying processes by time-resolved spectroscopy in dependence on excitation wavelength and solvent environment, resolving several intermediates over a temporal range spanning 15 orders of magnitude (hundreds of femtoseconds to hundreds of seconds) along the reaction path. In a quantum-chemical analysis, we identify 16 stable ground-state isomers and discuss which ones are identified in the experimental data. We derive a detailed scheme how these species are thermally and photochemically interconnected and conclude that proton transfer processes are involved.
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6
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Lietard A, Piani G, Pollet R, Soep B, Mestdagh JM, Poisson L. Excited state dynamics of normal dithienylethene molecules either isolated or deposited on an argon cluster. Phys Chem Chem Phys 2022; 24:10588-10598. [PMID: 35446319 DOI: 10.1039/d1cp05729d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Real-time dynamics of the electronically excited open-ring isomer of 1,2-bis(2-methylbenzo[b]thiophen-3-yl)perfluorocyclopentene (BTF6) and 1,2-bis(2,4-dimethyl-5-phenyl-3-thienyl)perfluorocyclopentene (PTF6) molecules was investigated using a set-up that associates a molecular beam, femtosecond lasers and velocity map imaging. The molecules were either free in the gas phase or bound to an argon cluster. DFT and TDDFT calculations were performed on BTF6. The calculated vertical excitation energies indicate an excitation by the pump laser towards a superposition of S5 and S6 states. The free molecule dynamics was found to follow a three wavepacket model. One describes the parallel conformer (P) of these molecules. It is unreactive with respect to the ring closure reaction which is responsible for the photochromic property of these molecules. It has no observable decay at the experiment time scale (up to 350 ps). The other two wavepackets describe the reactive antiparallel conformer (AP). They are formed by an early splitting of the wavepacket that was launched initially by the pump laser. They can be considered as generated by excitation of different, essentially uncoupled, deformation modes. They subsequently evolve along independent pathways. One is directed ballistically towards a conical intersection (CI) and decays through the CI to a potential energy surface where it can no longer be detected. The other fraction of the wavepacket decays also towards undetected states but in this case the driving mechanism is a non-adiabatic electronic relaxation within a potential well of the energy surfaces where it was launched. When BTF6 and PTF6 molecules are bound to an argon cluster, the same three wavepacket model applies. The vibronic relaxation timespan is enhanced by a factor 5 and a larger fraction of AP conformers follows this pathway. In contrast, the time constant associated with the ballistic movement is enhanced by only a factor of 2.
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Affiliation(s)
- Aude Lietard
- Université Paris-Saclay, CEA, CNRS, LIDYL, 91191, Gif-sur-Yvette, France.
| | - Giovanni Piani
- Université Paris-Saclay, CEA, CNRS, LIDYL, 91191, Gif-sur-Yvette, France.
| | - Rodolphe Pollet
- Université Paris-Saclay, CEA, CNRS, NIMBE, 91191, Gif-sur-Yvette, France
| | - Benoît Soep
- Université Paris-Saclay, CEA, CNRS, LIDYL, 91191, Gif-sur-Yvette, France. .,Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d'Orsay, 91405, Orsay, France
| | | | - Lionel Poisson
- Université Paris-Saclay, CEA, CNRS, LIDYL, 91191, Gif-sur-Yvette, France. .,Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d'Orsay, 91405, Orsay, France
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7
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Dowek D, Decleva P. Trends in angle-resolved molecular photoelectron spectroscopy. Phys Chem Chem Phys 2022; 24:24614-24654. [DOI: 10.1039/d2cp02725a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
In this perspective article, main trends of angle-resolved molecular photoelectron spectroscopy in the laboratory up to the molecular frame, in different regimes of light-matter interactions, are highlighted with emphasis on foundations and most recent applications.
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Affiliation(s)
- Danielle Dowek
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d’Orsay, 91405 Orsay, France
| | - Piero Decleva
- CNR IOM and Dipartimento DSCF, Università di Trieste, Trieste, Italy
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8
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Awali S, Mestdagh JM, Gaveau MA, Briant M, Soep B, Mazet V, Poisson L. Time-Resolved Observation of the Solvation Dynamics of a Rydberg Excited Molecule Deposited on an Argon Cluster. II. DABCO ☆ at Long Time Delays. J Phys Chem A 2021; 125:4341-4351. [PMID: 34003648 DOI: 10.1021/acs.jpca.1c01942] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The real-time dynamics of DABCO-argon clusters is investigated in a femtosecond pump-probe experiment where the pump excites DABCO to the S1 state within the argon cluster. The probe operates by photoionization and documents the energy and angular distributions of the resulting photoelectrons. The present work complements a previous work from our group [Awali Phys. Chem. Chem. Phys., 2014, 16, 516-526] where this dynamics was probed at short time, up to 4 ps after the pump pulse. Here, the dynamics is followed up to 500 ps. A multiscale dynamics is observed. It includes a jump between two solvation sites (time scale 0.27 ps) followed by the relaxation of the solvation cage excess vibrational energy (time scale 14 ps) and then by that of DABCO (time scale >150 ps). Polarization anisotropy, double polarization, and angular anisotropy effects are reported also. They are interpreted (quantitatively for the former effect) in terms of decoherence of rotational alignment, driven by the overall rotation of the DABCO-argon clusters. A tomographic view of the DABCO excited orbital, provided by the double anisotropy effect, is discussed on a qualitative basis.
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Affiliation(s)
- Slim Awali
- Université Paris-Saclay, CEA, CNRS, LIDYL, 91191, Gif-sur-Yvette, France.,EMIR, Institut Préparatoire aux Etudes d'Ingénieurs, 5019, Monastir, Tunisia
| | | | - Marc-André Gaveau
- Université Paris-Saclay, CEA, CNRS, LIDYL, 91191, Gif-sur-Yvette, France
| | - Marc Briant
- Université Paris-Saclay, CEA, CNRS, LIDYL, 91191, Gif-sur-Yvette, France
| | - Benoît Soep
- Université Paris-Saclay, CEA, CNRS, LIDYL, 91191, Gif-sur-Yvette, France.,Institut des Sciences Moléculaires d'Orsay, Université Paris-Saclay, CNRS, 91405, Orsay, France
| | - Vincent Mazet
- ICube, University of Strasbourg, CNRS, 300 boulevard Sébastien Brant, BP 10413, 67412 Illkirch, France
| | - Lionel Poisson
- Université Paris-Saclay, CEA, CNRS, LIDYL, 91191, Gif-sur-Yvette, France.,Institut des Sciences Moléculaires d'Orsay, Université Paris-Saclay, CNRS, 91405, Orsay, France
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9
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Zhang G, Xie M, Zhao J, Wei S, Zheng H, Zhang S. Key structural features that determine the selectivity of UV/acetylacetone for the degradation of aromatic pollutants when compared to UV/H 2O 2. WATER RESEARCH 2021; 196:117046. [PMID: 33774353 DOI: 10.1016/j.watres.2021.117046] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 03/10/2021] [Accepted: 03/11/2021] [Indexed: 06/12/2023]
Abstract
Acetylacetone (AA) has proven to be a potent photo-activator for the decolorization of dyes. However, there is very limited information on the quantitative structure-activity relationship (QSAR) and the mechanisms of dye degradation by UV/AA. Herein, the photolysis of 65 aromatic compounds (dyes and dye precursors) was investigated at three pH values (4.0, 6.0, 9.0) by UV/AA and UV/H2O2. The obtained pseudo-first-order photodegradation rate constants (k1) were processed using statistical analysis. The correlation between the k1 values and the number of photons absorbed by AA, together with the observed pH effect, suggested that the protonated enol structure of AA plays a crucial role in the photodecolorization of dyes. According to quantum chemical computation, photo-induced direct electron transfer between the excited state of AA and the dye was the main mechanism in the UV/AA process. QSAR models demonstrated that the molecular size and stability were the key factors that determined the efficiency of UV/H2O2 for dye degradation. Statistically, the UV/AA process was target-selective and suffered less from the inner filter effect, which made it more effective than the UV/H2O2 process for dye degradation. The selectivity of the UV/AA process was mainly embodied in the substituent effects: dyes with hydroxyl groups in conjugated systems decomposed faster than those with nitro-substitution or ortho-substituted sulfonate groups. The results can be used for the selection of appropriate photochemical approaches for the treatment of dye-contaminated water.
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Affiliation(s)
- Guoyang Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Min Xie
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Jing Zhao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Shuangshuang Wei
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Hongcen Zheng
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Shujuan Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China.
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10
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Kotsina N, Townsend D. Improved insights in time-resolved photoelectron imaging. Phys Chem Chem Phys 2021; 23:10736-10755. [DOI: 10.1039/d1cp00933h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We review new light source developments and data analysis considerations relevant to the time-resolved photoelectron imaging technique. Case studies illustrate how these themes may enhance understanding in studies of excited state molecular dynamics.
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Affiliation(s)
- Nikoleta Kotsina
- Institute of Photonics & Quantum Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - Dave Townsend
- Institute of Photonics & Quantum Sciences
- Heriot-Watt University
- Edinburgh
- UK
- Institute of Chemical Sciences
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11
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Rousselot-Pailley P, Sobanska S, Ferré N, Coussan S. UV Photochemistry of Acetylacetaldehyde Trapped in Cryogenic Matrices. J Phys Chem A 2020; 124:4916-4928. [PMID: 32441945 DOI: 10.1021/acs.jpca.0c02512] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The broad band UV photochemistry of acetylacetaldehyde, the hybrid form between malonaldehyde and acetylacetone (the two other most simple molecules exhibiting an intramolecular proton transfer), trapped in four cryogenic matrices, neon, nitrogen, argon, and xenon, has been studied by IRTF spectroscopy. These experimental results have been supported by B3LYP/6-311G++(2d,2p) calculations in order to get S0 minima together with their harmonic frequencies. On those minima, we have also calculated their vibrationally resolved UV absorption spectra at the time-dependent DFT ωB97XD/6-311++G(2d,2p) level. After deposition, only the two chelated forms are observed while they isomerize upon UV irradiation toward nonchelated species. From UV irradiation effects we have identified several nonchelated isomers, capable, in turn, of isomerizing and fragmenting, even if this last phenomenon seems to be most unlikely due to cryogenic cages confinement. On the basis of these findings, we have attempted a first approach to the reaction path of electronic relaxation. It appeared that, as with acetylacetone, the path of electronic relaxation seems to involve triplet states.
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Affiliation(s)
- P Rousselot-Pailley
- Centrale Marseille, CNRS, iSm2 UMR 7313, Aix-Marseille Université, Marseille, France
| | - S Sobanska
- Institut des Sciences Moléculaires, Université de Bordeaux 1, CNRS UMR 5255, Talence, France
| | - N Ferré
- CNRS, ICR, Aix-Marseille Université,, Marseille, France
| | - S Coussan
- CNRS, PIIM, Aix-Marseille Université, Marseille, France
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12
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Kotsina N, Candelaresi M, Saalbach L, Zawadzki MM, Crane SW, Sparling C, Townsend D. Short-wavelength probes in time-resolved photoelectron spectroscopy: an extended view of the excited state dynamics in acetylacetone. Phys Chem Chem Phys 2020; 22:4647-4658. [DOI: 10.1039/d0cp00068j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Time-resolved photoelectron spectroscopy using a vacuum ultraviolet probe brings new insight to the excited state dynamics operating in acetylacetone.
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Affiliation(s)
- Nikoleta Kotsina
- Institute of Photonics & Quantum Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - Marco Candelaresi
- Institute of Photonics & Quantum Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - Lisa Saalbach
- Institute of Photonics & Quantum Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | | | - Stuart W. Crane
- Institute of Photonics & Quantum Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - Chris Sparling
- Institute of Photonics & Quantum Sciences
- Heriot-Watt University
- Edinburgh
- UK
| | - Dave Townsend
- Institute of Photonics & Quantum Sciences
- Heriot-Watt University
- Edinburgh
- UK
- Institute of Chemical Sciences
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13
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Antonov I, Voronova K, Chen MW, Sztáray B, Hemberger P, Bodi A, Osborn DL, Sheps L. To Boldly Look Where No One Has Looked Before: Identifying the Primary Photoproducts of Acetylacetone. J Phys Chem A 2019; 123:5472-5490. [DOI: 10.1021/acs.jpca.9b04640] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Ivan Antonov
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, United States
| | - Krisztina Voronova
- Department of Chemistry, University of the Pacific, Stockton, California 95211, United States
| | - Ming-Wei Chen
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, United States
| | - Bálint Sztáray
- Department of Chemistry, University of the Pacific, Stockton, California 95211, United States
| | | | - Andras Bodi
- Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
| | - David L. Osborn
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, United States
| | - Leonid Sheps
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94551, United States
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14
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Yang Y, Li D, Li C, Liu Y, Jiang K. Asymmetric substitution changes the UV-induced nonradiative decay pathway and the spectra behaviors of β-diketones. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 207:209-215. [PMID: 30240982 DOI: 10.1016/j.saa.2018.09.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Revised: 09/13/2018] [Accepted: 09/14/2018] [Indexed: 06/08/2023]
Abstract
Asymmetric substitution has not been termed as an essential factor in studying photo-induced ultrafast dynamics of molecular system. Asymmetric 4-hydroxybut-3-en-2-one (HEO), together with symmetric malonaldehyde (MA) and acetylacetone (AA), have been provided as target sample to study the nonradiative decay (ND) processes of β-diketones. An effective ND pathway of the three molecules is presented that their excited second (S2) states transfer to first (S1) state by nonadiabatic surface hopping, and then transfer to triplet (T1) state by crossing minimum energy crossing point (MECP), after which decay to ground (S0) state through MECP. More importantly, the asymmetric substitution of HEO induces the proton transfer in the S1 state and generates a proton-transferred conformer with lowest energy, which does not occur for MA and AA. This change exploits a new ND pathway that the S1 state decays to the proton transferred T1 state and then undergoes reverse proton transfer to S0 state through the MECPs between the three states. The two pathways of HEO give detailed energy and geometric information on surface hopping of S2/S1 and MECPs of S1/T1/S0, and interpret the reason of the ND pathway while not spectra emission. This result is significantly different from the previous reported ND pathway of photoisomerization or conical intersection between different states. This work shows that asymmetric substitution changes the molecular structure and then changes their spectra behaviors.
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Affiliation(s)
- Yonggang Yang
- College of Physics and Materials Science, Henan Normal University, Xinxiang 453007, China
| | - Donglin Li
- College of Physics and Materials Science, Henan Normal University, Xinxiang 453007, China
| | - Chaozheng Li
- College of Physics and Materials Science, Henan Normal University, Xinxiang 453007, China
| | - Yufang Liu
- College of Physics and Materials Science, Henan Normal University, Xinxiang 453007, China.
| | - Kai Jiang
- School of Environment, Henan Normal University, Xinxiang 453007, China
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15
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Squibb RJ, Sapunar M, Ponzi A, Richter R, Kivimäki A, Plekan O, Finetti P, Sisourat N, Zhaunerchyk V, Marchenko T, Journel L, Guillemin R, Cucini R, Coreno M, Grazioli C, Di Fraia M, Callegari C, Prince KC, Decleva P, Simon M, Eland JHD, Došlić N, Feifel R, Piancastelli MN. Acetylacetone photodynamics at a seeded free-electron laser. Nat Commun 2018; 9:63. [PMID: 29302026 PMCID: PMC5754354 DOI: 10.1038/s41467-017-02478-0] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 12/04/2017] [Indexed: 11/30/2022] Open
Abstract
The first steps in photochemical processes, such as photosynthesis or animal vision, involve changes in electronic and geometric structure on extremely short time scales. Time-resolved photoelectron spectroscopy is a natural way to measure such changes, but has been hindered hitherto by limitations of available pulsed light sources in the vacuum-ultraviolet and soft X-ray spectral region, which have insufficient resolution in time and energy simultaneously. The unique combination of intensity, energy resolution, and femtosecond pulse duration of the FERMI-seeded free-electron laser can now provide exceptionally detailed information on photoexcitation–deexcitation and fragmentation in pump-probe experiments on the 50-femtosecond time scale. For the prototypical system acetylacetone we report here electron spectra measured as a function of time delay with enough spectral and time resolution to follow several photoexcited species through well-characterized individual steps, interpreted using state-of-the-art static and dynamics calculations. These results open the way for investigations of photochemical processes in unprecedented detail. The first steps in photochemical processes involve changes in electronic and geometric structure on extremely short timescales. Here, the authors report femtosecond dynamics in prototypical acetylacetone, by pump-probe photoexcitation-photoemission experiments and static and dynamics calculations.
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Affiliation(s)
- R J Squibb
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96, Gothenburg, Sweden
| | - M Sapunar
- Institut Ruđer Bošković, Bijenička cesta 54, 10000, Zagreb, Croatia
| | - A Ponzi
- Institut Ruđer Bošković, Bijenička cesta 54, 10000, Zagreb, Croatia
| | - R Richter
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy
| | - A Kivimäki
- Consiglio Nazionale delle Ricerche-Istituto Officina dei Materiali, 34149, Trieste, Italy
| | - O Plekan
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy
| | - P Finetti
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy
| | - N Sisourat
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France
| | - V Zhaunerchyk
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96, Gothenburg, Sweden
| | - T Marchenko
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France
| | - L Journel
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France
| | - R Guillemin
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France
| | - R Cucini
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy
| | - M Coreno
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy.,Consiglio Nazionale delle Ricerche - Istituto di Struttura della Materia, LD2 unit, 34149, Trieste, Italy
| | - C Grazioli
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy.,Consiglio Nazionale delle Ricerche - Istituto di Struttura della Materia, LD2 unit, 34149, Trieste, Italy
| | - M Di Fraia
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy.,Consiglio Nazionale delle Ricerche - Istituto di Struttura della Materia, LD2 unit, 34149, Trieste, Italy
| | - C Callegari
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy.,Consiglio Nazionale delle Ricerche - Istituto di Struttura della Materia, LD2 unit, 34149, Trieste, Italy
| | - K C Prince
- Elettra-Sincrotrone Trieste, Strada Statale 14-km 163.5, 34149, Basovizza, Trieste, Italy.,Molecular Model Discovery Laboratory, Department of Chemistry and Biotechnology, Swinburne University of Technology, Melbourne, VIC, 3122, Australia
| | - P Decleva
- Consiglio Nazionale delle Ricerche-Istituto Officina dei Materiali, 34149, Trieste, Italy.,Dipartimento di Scienze Chimiche e Farmaceutiche, Universitá di Trieste, 34127, Trieste, Italy
| | - M Simon
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France
| | - J H D Eland
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96, Gothenburg, Sweden.,Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, UK
| | - N Došlić
- Institut Ruđer Bošković, Bijenička cesta 54, 10000, Zagreb, Croatia
| | - R Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-412 96, Gothenburg, Sweden
| | - M N Piancastelli
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005, Paris Cedex 05, France. .,Department of Physics and Astronomy, Uppsala University, SE-751 20, Uppsala, Sweden.
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16
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Bhattacherjee A, Pemmaraju CD, Schnorr K, Attar AR, Leone SR. Ultrafast Intersystem Crossing in Acetylacetone via Femtosecond X-ray Transient Absorption at the Carbon K-Edge. J Am Chem Soc 2017; 139:16576-16583. [DOI: 10.1021/jacs.7b07532] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Aditi Bhattacherjee
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Chaitanya Das Pemmaraju
- Theory
Institute for Materials and Energy Spectroscopies, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Kirsten Schnorr
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Andrew R. Attar
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Stephen R. Leone
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department
of Physics, University of California, Berkeley, California 94720, United States
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17
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Galán LA, Reid BL, Stagni S, Sobolev AN, Skelton BW, Cocchi M, Malicka JM, Zysman-Colman E, Moore EG, Ogden MI, Massi M. Visible and Near-Infrared Emission from Lanthanoid β-Triketonate Assemblies Incorporating Cesium Cations. Inorg Chem 2017; 56:8975-8985. [DOI: 10.1021/acs.inorgchem.7b00928] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Laura Abad Galán
- Department of Chemistry
and Curtin Institute of Functional Molecules and Interfaces, Curtin University, Kent Street, Bentley 6102, Western Australia, Australia
| | - Brodie L. Reid
- Department of Chemistry
and Curtin Institute of Functional Molecules and Interfaces, Curtin University, Kent Street, Bentley 6102, Western Australia, Australia
| | - Stefano Stagni
- Department of Industrial Chemistry “Toso Montanari”, University of Bologna, viale del Risorgimento 4, Bologna 40136, Italy
| | - Alexandre N. Sobolev
- School of Molecular Sciences, University of Western Australia, 35 Stirling Highway, Crawley, Perth, Western Australia 6009, Australia
| | - Brian W. Skelton
- School of Molecular Sciences, University of Western Australia, 35 Stirling Highway, Crawley, Perth, Western Australia 6009, Australia
| | - Massimo Cocchi
- Institute for Organic Synthesis and Photoreactivity
(ISOF), Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti
101, 40129 Bologna, Italy
| | - Joanna M. Malicka
- Institute for Organic Synthesis and Photoreactivity
(ISOF), Consiglio Nazionale delle Ricerche (CNR), Via P. Gobetti
101, 40129 Bologna, Italy
| | - Eli Zysman-Colman
- Organic Semiconductor Centre, EaStCHEM
School of Chemistry, University of St. Andrews, St. Andrews, Fife KY16
9ST, United Kingdom
| | - Evan G. Moore
- School of Chemistry and
Molecular Biosciences, University of Queensland, St Lucia, Queensland 4072, Australia
| | - Mark I. Ogden
- Department of Chemistry
and Curtin Institute of Functional Molecules and Interfaces, Curtin University, Kent Street, Bentley 6102, Western Australia, Australia
| | - Massimiliano Massi
- Department of Chemistry
and Curtin Institute of Functional Molecules and Interfaces, Curtin University, Kent Street, Bentley 6102, Western Australia, Australia
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18
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Xie B, Cui G, Fang WH. Multiple-State Nonadiabatic Dynamics Simulation of Photoisomerization of Acetylacetone with the Direct ab Initio QTMF Approach. J Chem Theory Comput 2017; 13:2717-2729. [DOI: 10.1021/acs.jctc.7b00153] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Binbin Xie
- Key Laboratory of Theoretical
and Computational Photochemistry, Ministry of Education, College of
Chemistry, Beijing Normal University, Beijing 100875, China
| | - Ganglong Cui
- Key Laboratory of Theoretical
and Computational Photochemistry, Ministry of Education, College of
Chemistry, Beijing Normal University, Beijing 100875, China
| | - Wei-Hai Fang
- Key Laboratory of Theoretical
and Computational Photochemistry, Ministry of Education, College of
Chemistry, Beijing Normal University, Beijing 100875, China
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19
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Song X, Chen Z, Wang X, Zhang S. Ligand effects on nitrate reduction by zero-valent iron: Role of surface complexation. WATER RESEARCH 2017; 114:218-227. [PMID: 28249213 DOI: 10.1016/j.watres.2017.02.040] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2016] [Revised: 02/13/2017] [Accepted: 02/18/2017] [Indexed: 06/06/2023]
Abstract
Surface passivation is a key limiting factor in the application of zero-valent iron (ZVI) for water remediation. Addition of ligands is a useful approach to overcome this issue. In this work, a small amount of acetylacetone (AA) (0.5 mM) was found highly efficient to enhance the reduction of nitrate by ZVI at near neutral conditions (pH 6.0) with the formation of considerable black coating on ZVI. At an initial nitrate concentration of 20 mg N/L, the pseudo first-order reduction rate constant of nitrate in the ZVI-AA-NO3- system was 0.0991 h-1, which was 52 times higher than that in the ZVI-NO3- system. Under otherwise identical conditions, the other five ligands, including EDTA, formate, acetate, oxalate, and phosphate, had negligible effects. Based on the pKa values of these ligands and the final species of iron, the ligand effects on nitrate reduction by ZVI were summarized from three aspects: (1) the ability to offer potentially dissociable protons from the ligands; (2) the complexation ability to eliminate iron (hydr)oxide precipitates from the surface of ZVI; and (3) the ability to lower down the redox potentials of iron species. The good performance of AA in these three aspects makes it advantage over the other ligands. A cycle test up to six runs demonstrates that AA could continuously take effect in the ZVI system. The results here point out the potential of AA as an effective ligand in ZVI system for enhanced contaminant transformation.
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Affiliation(s)
- Xiaojie Song
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 210023, PR China
| | - Zhihao Chen
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 210023, PR China
| | - Xiaomeng Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 210023, PR China
| | - Shujuan Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 210023, PR China.
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20
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Gutiérrez-Quintanilla A, Chevalier M, Crépin C. Double deuterated acetylacetone in neon matrices: infrared spectroscopy, photoreactivity and the tunneling process. Phys Chem Chem Phys 2016; 18:20713-25. [DOI: 10.1039/c6cp02796b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Open enol conformers of double deuterated acetylacetone are produced by UV and IR irradiation, allowing the analysis of the tunnelling effect between them.
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Affiliation(s)
| | - Michèle Chevalier
- Institut des Sciences Moléculaires d'Orsay (ISMO)
- Bât.210
- UMR 8214
- CNRS
- Univ. Paris-Sud 11
| | - Claudine Crépin
- Institut des Sciences Moléculaires d'Orsay (ISMO)
- Bât.210
- UMR 8214
- CNRS
- Univ. Paris-Sud 11
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21
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Khemiri N, Messaoudi S, Abderrabba M, Spighi G, Gaveau MA, Briant M, Soep B, Mestdagh JM, Hochlaf M, Poisson L. Photoionization of Benzophenone in the Gas Phase: Theory and Experiment. J Phys Chem A 2015; 119:6148-54. [PMID: 25866992 DOI: 10.1021/acs.jpca.5b02706] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report on the single photoionization of jet-cooled benzophenone using a tunable source of VUV synchrotron radiation coupled with a photoion/photoelectron coincidence acquisition device. The assignment and the interpretation of the spectra are based on a characterization by ab initio and density functional theory calculations of the geometry and of the electronic states of the cation. The absence of structures in the slow photoelectron spectrum is explained by a congestion of the spectrum due to the dense vibrational progressions of the very low frequency torsional mode in the cation either in pure form or in combination bands. Also a high density of electronic states has been found in the cation. Presently, we estimate the experimental adiabatic and vertical ionization energy of benzophenone at 8.80 ± 0.01 and 8.878 ± 0.005 eV, respectively. The ionization energy as well as the energies of the excited states are compared to the calculated ones.
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Affiliation(s)
- Noura Khemiri
- †Laboratoire Matériaux, Molécules et Applications, Institut Préparatoire aux Etudes Scientifiques et Techniques, La Marsa, Université de Carthage, Carthage, Tunisie
| | - Sabri Messaoudi
- †Laboratoire Matériaux, Molécules et Applications, Institut Préparatoire aux Etudes Scientifiques et Techniques, La Marsa, Université de Carthage, Carthage, Tunisie
| | - Manef Abderrabba
- †Laboratoire Matériaux, Molécules et Applications, Institut Préparatoire aux Etudes Scientifiques et Techniques, La Marsa, Université de Carthage, Carthage, Tunisie
| | - Gloria Spighi
- ‡CEA, CNRS, IRAMIS/LIDyL/Laboratoire Francis Perrin URA2453, CEA Saclay, 91191 Gif-sur-Yvette, France
| | - Marc-André Gaveau
- ‡CEA, CNRS, IRAMIS/LIDyL/Laboratoire Francis Perrin URA2453, CEA Saclay, 91191 Gif-sur-Yvette, France
| | - Marc Briant
- ‡CEA, CNRS, IRAMIS/LIDyL/Laboratoire Francis Perrin URA2453, CEA Saclay, 91191 Gif-sur-Yvette, France
| | - Benoît Soep
- §CNRS, CEA, IRAMIS/LIDyL/Laboratoire Francis Perrin URA2453, CEA Saclay, 91191 Gif-sur-Yvette, France
| | - Jean-Michel Mestdagh
- §CNRS, CEA, IRAMIS/LIDyL/Laboratoire Francis Perrin URA2453, CEA Saclay, 91191 Gif-sur-Yvette, France
| | - Majdi Hochlaf
- ∥Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 5 bd Descartes, 77454 Marne-la-Vallée, France
| | - Lionel Poisson
- §CNRS, CEA, IRAMIS/LIDyL/Laboratoire Francis Perrin URA2453, CEA Saclay, 91191 Gif-sur-Yvette, France
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22
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Reid BL, Moore EG, Skelton BW, Ogden MI, Massi M. Investigation of the Photophysical Properties of a Eu3+ Coordination Polymer Bearing an α-Nitrile Substituted β-Diketonate Ligand via Emission and Ultrafast Transient Absorption Spectroscopy. Aust J Chem 2015. [DOI: 10.1071/ch15253] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Reaction of the β-diketone ligand, 2-cyano-1,3-phenyl-1,3-propandione (LH), with hydrated EuCl3 in the presence of 1,10-phenanthroline (Phen), results in the crystallisation of a one-dimensional Eu3+ coordination polymer of formulation [Eu(Phen)(L)3]∞, formed by coordination of the nitrile group of an O,O′-bound ligand to a neighbouring metal centre. An investigation of the metal-centred emission of the polymer, both in the solid state and solution, revealed red emission characterised by relatively long-lived excited state lifetimes and high intrinsic quantum yields. However, analysis of the overall quantum yield and sensitisation efficiency reveals that ultrafast processes in the ligand potentially inhibit Eu3+ sensitisation. Further investigations into these processes using transient absorption spectroscopy suggest that substitution at the α-C position may significantly decrease sensitisation via the antenna effect.
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23
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Verma PK, Steinbacher A, Koch F, Nuernberger P, Brixner T. Monitoring ultrafast intramolecular proton transfer processes in an unsymmetric β-diketone. Phys Chem Chem Phys 2015; 17:8459-66. [DOI: 10.1039/c4cp05811a] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Electronic excitation of a UV-absorbing unsymmetric β-diketone discloses intramolecular proton transfer among electronic ground as well as excited states.
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Affiliation(s)
- Pramod Kumar Verma
- Institut für Physikalische und Theoretische Chemie
- Universität Würzburg
- Am Hubland
- Germany
| | - Andreas Steinbacher
- Institut für Physikalische und Theoretische Chemie
- Universität Würzburg
- Am Hubland
- Germany
| | - Federico Koch
- Institut für Physikalische und Theoretische Chemie
- Universität Würzburg
- Am Hubland
- Germany
| | - Patrick Nuernberger
- Institut für Physikalische und Theoretische Chemie
- Universität Würzburg
- Am Hubland
- Germany
- Physikalische Chemie II
| | - Tobias Brixner
- Institut für Physikalische und Theoretische Chemie
- Universität Würzburg
- Am Hubland
- Germany
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24
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Verma PK, Koch F, Steinbacher A, Nuernberger P, Brixner T. Ultrafast UV-Induced Photoisomerization of Intramolecularly H-Bonded Symmetric β-Diketones. J Am Chem Soc 2014; 136:14981-9. [DOI: 10.1021/ja508059p] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Pramod Kumar Verma
- Institut für Physikalische
und Theoretische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Federico Koch
- Institut für Physikalische
und Theoretische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Andreas Steinbacher
- Institut für Physikalische
und Theoretische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Patrick Nuernberger
- Institut für Physikalische
und Theoretische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Tobias Brixner
- Institut für Physikalische
und Theoretische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
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25
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Poisson L, Nandi D, Soep B, Hochlaf M, Boggio-Pasqua M, Mestdagh JM. A roaming wavepacket in the dynamics of electronically excited 2-hydroxypyridine. Phys Chem Chem Phys 2014; 16:581-7. [DOI: 10.1039/c3cp52923a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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26
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Lietard A, Piani G, Poisson L, Soep B, Mestdagh JM, Aloïse S, Perrier A, Jacquemin D, Takeshita M. Competitive direct vs. indirect photochromism dynamics of constrained inverse dithienylethene molecules. Phys Chem Chem Phys 2014; 16:22262-72. [DOI: 10.1039/c4cp02310b] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Relaxation observed through several parallel pathways from the first excited state to the ground-state in inverse dithienylethene molecules.
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Affiliation(s)
- Aude Lietard
- CNRS
- IRAMIS
- LIDyL
- Laboratoire Francis Perrin
- 91191 Gif-sur-Yvette, France
| | - Giovanni Piani
- CNRS
- IRAMIS
- LIDyL
- Laboratoire Francis Perrin
- 91191 Gif-sur-Yvette, France
| | - Lionel Poisson
- CNRS
- IRAMIS
- LIDyL
- Laboratoire Francis Perrin
- 91191 Gif-sur-Yvette, France
| | - Benoît Soep
- CNRS
- IRAMIS
- LIDyL
- Laboratoire Francis Perrin
- 91191 Gif-sur-Yvette, France
| | | | - Stéphane Aloïse
- Université Lille 1 – LASIR UMR 8516
- 59655 Villeneuve d'Ascq CEDEX, France
| | - Aurélie Perrier
- Université Paris 7 – Sorbonne Paris Cité – ITODYS UMR 7086
- 75205 Paris CEDEX, France
| | - Denis Jacquemin
- Laboratoire CEISAM – UMR CNRS 6230, Université de Nantes
- 44322 Nantes Cedex 3, France
- Institut Universitaire de France
- 75005 Paris Cedex 5, France
| | - Michinori Takeshita
- Department of Chemistry and Applied Chemistry
- Faculty of Science and Engineering
- Saga University
- Saga 840-8502, Japan
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27
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Awali S, Poisson L, Soep B, Gaveau MA, Briant M, Pothier C, Mestdagh JM, Rhouma MBEH, Hochlaf M, Mazet V, Faisan S. Time resolved observation of the solvation dynamics of a Rydberg excited molecule deposited on an argon cluster-I: DABCO☆at short times. Phys Chem Chem Phys 2014; 16:516-26. [DOI: 10.1039/c3cp53172d] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Lozada-García RR, Ceponkus J, Chevalier M, Chin W, Mestdagh JM, Crépin C. Photochemistry of acetylacetone isolated in parahydrogen matrices upon 266 nm irradiation. Phys Chem Chem Phys 2012; 14:3450-9. [DOI: 10.1039/c2cp23913b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Acetylacetone in hydrogen solids: IR signatures of the enol and keto tautomers and UV induced tautomerization. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.01.055] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Trivella A, Wassermann TN, Mestdagh JM, Manca Tanner C, Marinelli F, Roubin P, Coussan S. New insights into the photodynamics of acetylacetone: isomerization and fragmentation in low-temperature matrixes. Phys Chem Chem Phys 2010; 12:8300-10. [DOI: 10.1039/c003593a] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- A Trivella
- Laboratoire Physique des Interactions Ioniques et Moléculaires, UMR 6633, Université de Provence-CNRS, Centre St-Jérôme, 13397 Marseille Cedex 20, France
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Al-Jabour S, Baer M, Deeb O, Leibscher M, Manz J, Xu X, Zilberg S. Molecular Symmetry Properties of Conical Intersections and Nonadiabatic Coupling Terms: Theory and Quantum Chemical Demonstration for Cyclopenta-2,4-dienimine (C5H4NH). J Phys Chem A 2009; 114:2991-3010. [DOI: 10.1021/jp905038t] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- S. Al-Jabour
- Institut für Chemie und Biochemie, Freie Universität Berlin, Germany, Faculty of Pharmacy, Al-Quds University, Palestine, The Fritz Haber Center for Molecular Dynamics, The Hebrew University of Jerusalem, Israel, and Department of Physical Chemistry and the Farkas Center for Light Induced Processes, The Hebrew University of Jerusalem, Israel
| | - M. Baer
- Institut für Chemie und Biochemie, Freie Universität Berlin, Germany, Faculty of Pharmacy, Al-Quds University, Palestine, The Fritz Haber Center for Molecular Dynamics, The Hebrew University of Jerusalem, Israel, and Department of Physical Chemistry and the Farkas Center for Light Induced Processes, The Hebrew University of Jerusalem, Israel
| | - O. Deeb
- Institut für Chemie und Biochemie, Freie Universität Berlin, Germany, Faculty of Pharmacy, Al-Quds University, Palestine, The Fritz Haber Center for Molecular Dynamics, The Hebrew University of Jerusalem, Israel, and Department of Physical Chemistry and the Farkas Center for Light Induced Processes, The Hebrew University of Jerusalem, Israel
| | - M. Leibscher
- Institut für Chemie und Biochemie, Freie Universität Berlin, Germany, Faculty of Pharmacy, Al-Quds University, Palestine, The Fritz Haber Center for Molecular Dynamics, The Hebrew University of Jerusalem, Israel, and Department of Physical Chemistry and the Farkas Center for Light Induced Processes, The Hebrew University of Jerusalem, Israel
| | - J. Manz
- Institut für Chemie und Biochemie, Freie Universität Berlin, Germany, Faculty of Pharmacy, Al-Quds University, Palestine, The Fritz Haber Center for Molecular Dynamics, The Hebrew University of Jerusalem, Israel, and Department of Physical Chemistry and the Farkas Center for Light Induced Processes, The Hebrew University of Jerusalem, Israel
| | - X. Xu
- Institut für Chemie und Biochemie, Freie Universität Berlin, Germany, Faculty of Pharmacy, Al-Quds University, Palestine, The Fritz Haber Center for Molecular Dynamics, The Hebrew University of Jerusalem, Israel, and Department of Physical Chemistry and the Farkas Center for Light Induced Processes, The Hebrew University of Jerusalem, Israel
| | - S. Zilberg
- Institut für Chemie und Biochemie, Freie Universität Berlin, Germany, Faculty of Pharmacy, Al-Quds University, Palestine, The Fritz Haber Center for Molecular Dynamics, The Hebrew University of Jerusalem, Israel, and Department of Physical Chemistry and the Farkas Center for Light Induced Processes, The Hebrew University of Jerusalem, Israel
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32
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Noller B, Poisson L, Maksimenka R, Gobert O, Fischer I, Mestdagh JM. Ultrafast Dynamics of Isolated Phenylcarbenes Followed by Femtosecond Time-Resolved Velocity Map Imaging. J Phys Chem A 2009; 113:3041-50. [DOI: 10.1021/jp810974m] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Bastian Noller
- Laboratoire Francis Perrin, CNRS URA 2453, CEA IRAMIS/Service des Photons, Atoms et Molécules, F-91191 Gif-sur-Yvette Cedex, France and University of Würzburg, Institute of Physical Chemistry, Am Hubland, D-97074 Würzburg, Germany
| | - Lionel Poisson
- Laboratoire Francis Perrin, CNRS URA 2453, CEA IRAMIS/Service des Photons, Atoms et Molécules, F-91191 Gif-sur-Yvette Cedex, France and University of Würzburg, Institute of Physical Chemistry, Am Hubland, D-97074 Würzburg, Germany
| | - Raman Maksimenka
- Laboratoire Francis Perrin, CNRS URA 2453, CEA IRAMIS/Service des Photons, Atoms et Molécules, F-91191 Gif-sur-Yvette Cedex, France and University of Würzburg, Institute of Physical Chemistry, Am Hubland, D-97074 Würzburg, Germany
| | - Oliver Gobert
- Laboratoire Francis Perrin, CNRS URA 2453, CEA IRAMIS/Service des Photons, Atoms et Molécules, F-91191 Gif-sur-Yvette Cedex, France and University of Würzburg, Institute of Physical Chemistry, Am Hubland, D-97074 Würzburg, Germany
| | - Ingo Fischer
- Laboratoire Francis Perrin, CNRS URA 2453, CEA IRAMIS/Service des Photons, Atoms et Molécules, F-91191 Gif-sur-Yvette Cedex, France and University of Würzburg, Institute of Physical Chemistry, Am Hubland, D-97074 Würzburg, Germany
| | - J. M. Mestdagh
- Laboratoire Francis Perrin, CNRS URA 2453, CEA IRAMIS/Service des Photons, Atoms et Molécules, F-91191 Gif-sur-Yvette Cedex, France and University of Würzburg, Institute of Physical Chemistry, Am Hubland, D-97074 Würzburg, Germany
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