1
|
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.
Collapse
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
| |
Collapse
|
2
|
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*.
Collapse
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
| |
Collapse
|
3
|
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.
Collapse
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
| |
Collapse
|
4
|
Lapaev DV, Nikiforov VG, Lobkov VS, Knyazev AA, Galyametdinov YG. Thermally induced structural transitions and temperature memory effect in a luminescent vitrified film of an anisometric europium(III) β-diketonate complex. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2022.114333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
5
|
Haugen EA, Hait D, Scutelnic V, Xue T, Head-Gordon M, Leone SR. Ultrafast X-ray Spectroscopy of Intersystem Crossing in Hexafluoroacetylacetone: Chromophore Photophysics and Spectral Changes in the Face of Electron-Withdrawing Groups. J Phys Chem A 2023; 127:634-644. [PMID: 36638240 DOI: 10.1021/acs.jpca.2c06044] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Intersystem crossings between singlet and triplet states represent a crucial relaxation pathway in photochemical processes. Herein, we probe the intersystem crossing in hexafluoro-acetylacetone with ultrafast X-ray transient absorption spectroscopy at the carbon K-edge. We observe the excited state dynamics following excitation with 266 nm UV light to the 1ππ* (S2) state with element and site-specificity using a broadband soft X-ray pulse produced by high harmonic generation. These results are compared to X-ray spectra computed from orbital optimized density functional theory methods. It is found that the electron-withdrawing fluorine atoms decongest the X-ray absorption spectrum by enhancing separation between features originating from different carbon atoms. This facilitates the elucidation of structural and electronic dynamics at the chromophore. The evolution of the core-to-valence resonances at the carbon K-edge reveals an ultrafast population transfer between the 1nπ* (S1) and 3ππ* (T1) states on a 1.6 ± 0.4 ps time scale, which is similar to the 1.5 ps time scale earlier observed for acetylacetone [ J. Am. Chem. Soc. 2017, 139, 16576-16583, DOI: 10.1021/jacs.7b07532]. It therefore appears that terminal fluorination has little influence on the intersystem crossing rate of the acetylacetone chromophore. In addition, the significant role of hydrogen-bond opened and twisted rotational isomers is elucidated in the excited state dynamics by comparison of the experimental transient X-ray spectra with theory.
Collapse
Affiliation(s)
- Eric A Haugen
- Department of Chemistry, University of California, Berkeley, California 94720, United States.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Diptarka Hait
- Department of Chemistry, University of California, Berkeley, California 94720, United States.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Valeriu Scutelnic
- Department of Chemistry, University of California, Berkeley, California 94720, United States.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Tian Xue
- Department of Chemistry, University of California, Berkeley, California 94720, United States.,Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Martin Head-Gordon
- 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
| |
Collapse
|
6
|
Lapaev DV, Nikiforov VG, Lobkov VS, Knyazev AA, Galyametdinov YG. A reusable and self-recoverable vitrified film of an anisometric europium(III) β-diketonate complex with UV light-responsive Eu3+ emission. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.113821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
7
|
Li J, Zhou Z, Xu H, Wang C, Hata S, Dai Z, Shiraishi Y, Du Y. In situ nanopores enrichment of Mesh-like palladium nanoplates for bifunctional fuel cell reactions: A joint etching strategy. J Colloid Interface Sci 2021; 611:523-532. [PMID: 34971963 DOI: 10.1016/j.jcis.2021.12.111] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 11/30/2021] [Accepted: 12/17/2021] [Indexed: 12/29/2022]
Abstract
Two-dimensional (2D) nanomaterials with nanopore display an enhancement effect on electrocatalysis behavior, whereas the nanopore engineering for 2D nanocatalysts remains an insurmountable challenge. We advance the synthesis of multilayer Pd nanoplates (Pd NPs) and two types of meshy nanoplates (Pd LMNPs/MNPs) with escalating nanopores from none and sparse to porous. Specially, an in situ nanopore enrichment on these Pd nanoplates hinges on a joint etching strategy with integrated manipulation of reaction kinetics. The optimized Pd MNPs exhibit exceptional oxygen reduction reaction performance, owing to the enhanced intermediates protonation on Pd site neighboring nanopore, which has been elucidated by density functional theory calculations. In addition, Pd MNPs also deliver excellent performances in fuel cell anodic reactions, including ethanol oxidation reaction and formic acid oxidation reaction. This study highlights a new strategy for in situ nanopores engineering, providing a prospect for designing superior nanocatalysts.
Collapse
Affiliation(s)
- Jie Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Zhangyu Zhou
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang 443002, PR China
| | - Hui Xu
- Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Jiangsu Key Laboratory of Oil and Gas Storage & Transportation Technology, Changzhou University, Jiangsu 213164, China
| | - Cheng Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Shinichi Hata
- Department of Applied Chemistry, Faculty of Engineering, Sanyo-Onoda City University, Sanyo-Onoda, Yamaguchi 756-0884, Japan
| | - Zhongxu Dai
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang 443002, PR China.
| | - Yukihide Shiraishi
- Department of Applied Chemistry, Faculty of Engineering, Sanyo-Onoda City University, Sanyo-Onoda, Yamaguchi 756-0884, Japan
| | - Yukou Du
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China.
| |
Collapse
|
8
|
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.
Collapse
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.
| |
Collapse
|
9
|
Wu B, Yu S, Zhang G, Zhang S, Shen P, Tratnyek PG. Role of complexation in the photochemical reduction of chromate by acetylacetone. JOURNAL OF HAZARDOUS MATERIALS 2020; 400:123306. [PMID: 32947710 DOI: 10.1016/j.jhazmat.2020.123306] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 06/15/2020] [Accepted: 06/22/2020] [Indexed: 06/11/2023]
Abstract
Organic ligands can alter the redox behavior of metal species through the generation of metal-ligand complexes. Photo-induced complexation between ligands and metals is an important, but under-appreciated, aspect of process. Acetylacetone (AA) is a good chelating agent due to keto-enol tautomerization. In the presence of AA, photoreduction of Cr(VI) is accelerated; however, it is unclear exactly how complexation is involved in UV/AA mediated Cr(VI) reduction. On the basis of spectral and kinetic analyses, this study shows that the formation of {Cr(VI)-AA}* complexes is the main mechanism of Cr(VI) reduction by UV/AA. Evidence for this includes (1) the formation rate constant of Cr(III)-AA complexes in the UV system was 2-3 orders of magnitude greater than that in the thermal system; (2) there was a linear relationship between the photons absorbed by AA and the reduction rate constants of Cr(VI); and (3) the reaction appeared initially zero-order in Cr(VI) and turned to first-order as the pool of available Cr(VI) ran out. The results presented here are not only important for the better understanding of the complexation effects in the reduction of Cr(VI), but also crucial for the possible application of the UV/AA process in many other scenarios.
Collapse
Affiliation(s)
- Bingdang Wu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Shouyun Yu
- State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, 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
| | - Shujuan Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China.
| | - Pengfei Shen
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Paul G Tratnyek
- OHSU-PSU School of Public Health, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR, 97239, USA
| |
Collapse
|
10
|
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.
Collapse
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
| |
Collapse
|
11
|
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.
Collapse
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
| |
Collapse
|
12
|
Lapaev DV, Nikiforov VG, Lobkov VS, Knyazev AA, Krupin AS, Galyametdinov YG. New insights into UV laser irradiation effect on luminescent behavior of vitrified films based on mesogenic lanthanide(III) β-diketonate complexes. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.111962] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
13
|
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
| |
Collapse
|
14
|
Trivella A, Wassermann TN, Manca Tanner C, Lüttschwager NOB, Coussan S. UV and IR Photochemistries of Malonaldehyde Trapped in Cryogenic Matrices. J Phys Chem A 2018; 122:2376-2393. [PMID: 29420027 DOI: 10.1021/acs.jpca.7b11980] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
UV and IR photochemistries of malonaldehyde, the simplest molecule exhibiting an intramolecular proton exchange, have been studied in four cryogenic matrices at 4.3 K, N2, Ne, Ar, and Xe. Samples have been irradiated using a UV and IR OPO type tunable laser, and with a broad band UV mercury lamp. UV and IR spectra have been recorded and compared with theoretical calculations carried out at the SAC-CI/6-31++G(d,p) (UV transitions) and B3LYP/6-311++G(2d,2p) (IR spectra) levels of theory. After deposition, the intramolecularly H-bonded form is found exclusively, while several open forms are formed upon UV irradiation. These open forms show ability to interconvert upon UV irradiation too. Some of them are also able to isomerize upon selective IR irradiations. The whole set of results allowed us to identify seven isomers among the eight postulated. The photodynamics of the electronic relaxation of malonaldehyde have also been investigated. By following the decay or rise of suited specific vibrational bands in the IR spectra, and by comparing the results with an earlier study of the homologous acetylacetone, we deduced that the electronic relaxation of malonaldehyde proceeds through singlet states, most probably through a 3-fold conical intersection, as postulated from theoretical calculations. In contrast with acetylacetone, malonaldehyde does not show fragmentation after UV excitation.
Collapse
Affiliation(s)
- A Trivella
- Département Génie Biologique, UMR EPOC (5805)-LPTC , IUT de Bordeaux, site de Périgueux , Rue du Doyen Joseph Lajugie , 24000 Périgueux , France
| | - T N Wassermann
- Institüt für Physikalische Chemie , Universität Göttingen , Tammannstrasse 6 , 37077 Göttingen , Germany.,CNRS, PIIM, Laboratoire des Interactions Ioniques et Moléculaires , Aix Marseille Universite , 13397 Marseille Cedex 20, France
| | - C Manca Tanner
- Laboratory of Physical Chemistry , ETH Zurich , Vladimir-Prelog-Weg 1-5/10 , 8093 Zurich , Switzerland
| | - N O B Lüttschwager
- Institüt für Physikalische Chemie , Universität Göttingen , Tammannstrasse 6 , 37077 Göttingen , Germany
| | - S Coussan
- CNRS, PIIM, Laboratoire des Interactions Ioniques et Moléculaires , Aix Marseille Universite , 13397 Marseille Cedex 20, France
| |
Collapse
|
15
|
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.
Collapse
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.
| |
Collapse
|
16
|
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
| |
Collapse
|
17
|
Chen Z, Song X, Zhang S, Wu B, Zhang G, Pan B. Acetylacetone as an efficient electron shuttle for concerted redox conversion of arsenite and nitrate in the opposite direction. WATER RESEARCH 2017; 124:331-340. [PMID: 28779618 DOI: 10.1016/j.watres.2017.07.071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 07/25/2017] [Accepted: 07/28/2017] [Indexed: 06/07/2023]
Abstract
The redox conversion of arsenite and nitrate has direct effects on their potential environment risks. Due to the similar reduction potentials, there are few technologies that can simultaneously oxidize arsenite and reduce nitrate in one process. Here, we demonstrate that a diketone-mediated photochemical process could efficiently do this. A combined experimental and theoretical investigation was conducted to elucidate the mechanisms behind the redox conversion in the UV/acetylacetone (AA) process. Our key finding is that UV irradiation significantly changed the redox potential of AA. The excited AA, 3(AA)*, acted as a semiquinone radical-like electron shuttle. For arsenite oxidation, the efficiency of 3(AA)* was 1-2 orders of magnitude higher than those of quinone-type electron shuttles, whereas the consumption of AA was 2-4 orders of magnitude less than those of benzonquinones. The oxidation of arsenite and reduction of nitrate could be both accelerated when they existed together in UV/AA process. The results indicate that small diketones are some neglected but potent electron shuttles of great application potential in regulating aquatic redox reactions with the combination of UV irradiation.
Collapse
Affiliation(s)
- Zhihao Chen
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China
| | - Xiaojie Song
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China
| | - Shujuan Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China.
| | - Bingdang Wu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China
| | - Guoyang Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China
| | - Bingcai Pan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China
| |
Collapse
|
18
|
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
| |
Collapse
|
19
|
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.
Collapse
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
| |
Collapse
|
20
|
Kojić M, Petković M, Etinski M. A new insight into the photochemistry of avobenzone in gas phase and acetonitrile from ab initio calculations. Phys Chem Chem Phys 2016; 18:22168-78. [DOI: 10.1039/c6cp03533g] [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
Coupled cluster based calculations on the ground and excited states of avobenzone provide mechanistic understanding of formation of transient tautomers upon photoexcitation of the chelated enol form.
Collapse
Affiliation(s)
- Marko Kojić
- Faculty of Physical Chemistry
- University of Belgrade
- 11000 Belgrade
- Serbia
| | - Milena Petković
- Faculty of Physical Chemistry
- University of Belgrade
- 11000 Belgrade
- Serbia
| | - Mihajlo Etinski
- Faculty of Physical Chemistry
- University of Belgrade
- 11000 Belgrade
- Serbia
| |
Collapse
|
21
|
Wu B, Zhang S, Li X, Liu X, Pan B. Iron in non-hydroxyl radical mediated photochemical processes for dye degradation: Catalyst or inhibitor? CHEMOSPHERE 2015; 131:55-62. [PMID: 25765264 DOI: 10.1016/j.chemosphere.2015.02.040] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Revised: 01/27/2015] [Accepted: 02/14/2015] [Indexed: 06/04/2023]
Abstract
The acetylacetone (AA) mediated photochemical process has been proven as an efficient approach for decoloration. For azo dyes, the UV/AA process was several to more than ten times more efficient than the UV/H2O2 process. Iron is one of the most common elements on the earth. It is well known that iron can improve the UV/H2O2 process through thermal Fenton and photo-Fenton reactions. What will be the role of iron in the UV/AA process? Could iron-AA complexes act as photocatalysts in environmental remediation? To answer these questions, the photo-degradation of an azo dye, Acid Orange 7 (AO7), was conducted under the variant combinations of AA with iron species in both ionic (Fe2+, Fe3+) and complex (Fe(AA)3) forms. The pseudo-first-order decoloration rate constants of AO7 in these photochemical processes followed such an order: UV/Fe(II)/AA<UV/Fe(III)/AA<UV/Fe(AA)3<UV/AA. The results demonstrate that iron species, in either ionic or complex form, acts as an inhibitor rather than a catalyst in the UV/AA process. Based on spectroscopic analysis, the inner filter effect of iron and the competition between Fe(III) and AA for the complexation with AO7 were attributed to the inhibition effect of iron on the UV/AA process. The understanding of the role of iron provides insight into the practical application of the UV/AA process.
Collapse
Affiliation(s)
- Bingdang Wu
- 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.
| | - Xuchun Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Xitong Liu
- Department of Geography and Environmental Engineering, Johns Hopkins University, Baltimore, MD 21218-2686, United States
| | - Bingcai Pan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| |
Collapse
|
22
|
Warneke J, Van Dorp WF, Rudolf P, Stano M, Papp P, Matejčík Š, Borrmann T, Swiderek P. Acetone and the precursor ligand acetylacetone: distinctly different electron beam induced decomposition? Phys Chem Chem Phys 2014; 17:1204-16. [PMID: 25418538 DOI: 10.1039/c4cp04239e] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In focused electron beam induced deposition (FEBID) acetylacetone plays a role as a ligand in metal acetylacetonate complexes. As part of a larger effort to understand the chemical processes in FEBID, the electron-induced reactions of acetylacetone were studied both in condensed layers and in the gas phase and compared to those of acetone. X-ray photoelectron spectroscopy (XPS) shows that the electron-induced decomposition of condensed acetone layers yields a non-volatile hydrocarbon residue while electron irradiation of acetylacetone films produces a non-volatile residue that contains not only much larger amounts of carbon but also significant amounts of oxygen. Electron-stimulated desorption (ESD) and thermal desorption spectrometry (TDS) measurements reveal striking differences in the decay kinetics of the layers. In particular, intact acetylacetone suppresses the desorption of volatile products. Gas-phase studies of dissociative electron attachment and electron impact ionization suggest that this effect cannot be traced back to differences in the initial fragmentation reactions of the isolated molecules but is due to subsequent dissociation processes and to an efficient reaction of released methyl radicals with adjacent acetylacetone molecules. These results could explain the incorporation of large amounts of ligand material in deposits fabricated by FEBID processes using acetylacetonate complexes.
Collapse
Affiliation(s)
- Jonas Warneke
- University of Bremen, Institute of Applied and Physical Chemistry, Fachbereich 2 (Chemie/Biologie), Leobener Straße/NW 2, Postfach 330440, D-28334 Bremen, Germany.
| | | | | | | | | | | | | | | |
Collapse
|
23
|
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
| |
Collapse
|
24
|
Zhang S, Peng Y, Jiang W, Liu X, Song X, Pan B, Yu HQ. Light-triggered reversible sorption of azo dyes on titanium xerogels with photo-switchable acetylacetonato anchors. Chem Commun (Camb) 2014; 50:1086-8. [DOI: 10.1039/c3cc48362b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
25
|
Detection of tautomer proportions of dimedone in solution: a new approach based on theoretical and FT-IR viewpoint. J Comput Aided Mol Des 2013; 27:681-8. [DOI: 10.1007/s10822-013-9669-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Accepted: 07/31/2013] [Indexed: 11/26/2022]
|
26
|
Walter M, Amann T, Li K, Kailer A, Rühe J, Moseler M. 1,3-Diketone Fluids and Their Complexes with Iron. J Phys Chem A 2013; 117:3369-76. [PMID: 23534895 DOI: 10.1021/jp400980y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Michael Walter
- FMF, Freiburg Materials Research
Center, University of Freiburg, Stefan-Meier-Straße
21, 79104 Freiburg, Germany
- IWM, Fraunhofer Institute for Mechanics of Materials, Woehlerstraße
11, 79108 Freiburg, Germany
| | - Tobias Amann
- IWM, Fraunhofer Institute for Mechanics of Materials, Woehlerstraße
11, 79108 Freiburg, Germany
| | - Ke Li
- IMTEK, Department of Microsystems
Engineering, University of Freiburg, Georges-Köhler-Allee
103, D-79110 Freiburg, Germany
| | - Andreas Kailer
- IWM, Fraunhofer Institute for Mechanics of Materials, Woehlerstraße
11, 79108 Freiburg, Germany
| | - Jürgen Rühe
- IMTEK, Department of Microsystems
Engineering, University of Freiburg, Georges-Köhler-Allee
103, D-79110 Freiburg, Germany
| | - Michael Moseler
- IWM, Fraunhofer Institute for Mechanics of Materials, Woehlerstraße
11, 79108 Freiburg, Germany
| |
Collapse
|
27
|
Penzkofer A. Phosphorescence quantum yield determination with time-gated fluorimeter and Tb(III)-acetylacetonate as luminescence reference. Chem Phys 2013. [DOI: 10.1016/j.chemphys.2013.01.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
28
|
Karabulut S, Namlı H. An FT-IR and DFT based new approach for the detection of tautomer proportions in solution. J Mol Struct 2012. [DOI: 10.1016/j.molstruc.2012.05.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
29
|
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]
|
30
|
Delchev VB, Shterev IG. Photoinduced disruption of the strong intramolecular H-bond in the enol form of acetylacetone: Mechanisms of radiationless decay. COMPUT THEOR CHEM 2011. [DOI: 10.1016/j.comptc.2011.04.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
31
|
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]
|
32
|
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
| | | | | | | | | | | | | |
Collapse
|
33
|
Zhou S, Barnes I, Zhu T, Bejan I, Albu M, Benter T. Atmospheric chemistry of acetylacetone. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2008; 42:7905-7910. [PMID: 19031879 DOI: 10.1021/es8010282] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A kinetic study on the reactions of the OH radical and ozone with acetylacetone (AcAc) has been performed in a 1080 L quartz glass reaction chamber using in situ FTIR spectroscopy analysis. Temperature dependent rate coefficients for the reaction of AcAc with the OH radical were determined over the temperature range 285-310 K using the relative kinetic method. The following Arrhenius expression was derived: k = 3.35 x 10(-12) exp((983 +/- 130)/T) cm3 molecule(-1) s(-1), where the indicated error is the two least-squares deviation. A rate coefficient (in units of cm3 molecule(-1) s(-1)) of (1.03 +/- 0.31) x 10(-18) has been obtained at (298 +/- 3) K for the reaction of ozone with AcAc. A product investigation on the gas-phase reaction of OH radical with AcAc was conducted in a 405 L borosilicate glass chamber using in situ FTIR spectroscopy to monitor reactants and products. Methylglyoxal, acetic acid, peroxy acetic nitrate (PAN) were positively identified as products with molar yields of (20.8 +/- 4.5)%, (16.9 +/- 3.4)%, and (2.0 +/- 0.5)%, respectively. From the residual infrared spectrum the main products are attributed to 2,3,4-pentantrione (CH3-CO-CO-CO-CH3) and its hydrated analogue pentan-2,3-dione-4-diol (CH3-CO-CO-C(OH)2-CH3). Based on the observed products, a simplified mechanism for the reaction of the OH radical with AcAc is proposed.
Collapse
Affiliation(s)
- Shouming Zhou
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Science, Peking University, 100871 Beijing, China
| | | | | | | | | | | |
Collapse
|
34
|
Mohacek-Grosev V, Furić K, Ivanković H. Luminescence and Raman Spectra of Acetylacetone at Low Temperatures. J Phys Chem A 2007; 111:5820-7. [PMID: 17566988 DOI: 10.1021/jp067157j] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Raman spectra of acetylacetone were recorded for molecules isolated in an argon matrix at 10 K and for a polycrystalline sample. In the solid sample, broad bands appear superimposed on a much weaker Raman spectrum corresponding mainly to the stable enol form. The position of these bands depends on the excitation wavelength (514.5 and 488.8 nm argon ion laser lines were used), sample temperature, and cooling history. They are attributed to transitions from an excited electronic state to various isomer states in the ground electronic state. Laser photons have energies comparable to energies of a number of excited triplet states predicted for a free acetylacetone molecule (Chen, X.-B.; Fang, W.-H.; Phillips, D. L. J. Phys. Chem. A 2006, 110, 4434). Since singlet-to-triplet photon absorption transitions are forbidden, states existing in the solid have mixed singlet/triplet character. Their decay results in population of different isomer states, which except for the lowest isomers SYN enol, TS2 enol (described in Matanović I.; Doslić, N. J. Phys. Chem. A 2005, 109, 4185), and the keto form, which can be detected in the Raman spectra of the solid, are not vibrationally resolved. Differential scanning calorimetry detected two signals upon cooling of acetylacetone, one at 229 K and one at 217 K, while upon heating, they appear at 254 and 225 K. The phase change at higher temperature is attributed to a freezing/melting transition, while the one at lower temperature seems to correspond to freezing/melting of keto domains, as suggested by Johnson et al. (Johnson, M. R.; Jones, N. H.; Geis, A; Horsewill. A. J.; Trommsdorff, H. P. J. Chem. Phys. 2002, 116, 5694). Using matrix isolation in argon, the vibrational spectrum of acetylacetone at 10 K was recorded. Strong bands at 1602 and 1629 cm(-1) are assigned as the SYN enol bands, while a weaker underlying band at 1687 cm(-1) and a medium shoulder at 1617 cm(-1) are assigned as TS2 enol bands.
Collapse
Affiliation(s)
- Vlasta Mohacek-Grosev
- Ruder Bosković Institute, P.O. Box 180, Bijenicka c. 54, 10002 Zagreb, Croatia, and Faculty of Chemical Engineering and Technology, Marulićev trg 19, 10000 Zagreb, Croatia.
| | | | | |
Collapse
|
35
|
Gomes JRB, da Silva MAVR. Computational study on the bond dissociation enthalpies in the enolic and ketonic forms of beta-diketones: their influence on metal-ligand bond enthalpies. J Phys Chem A 2007; 110:13948-55. [PMID: 17181355 DOI: 10.1021/jp064286r] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A computational study on the thermodynamic properties of 13 beta-diketones is presented. The B3LYP//6-311+G(2d,2p)//B3LYP/6-31G(d) theoretical approach was employed to compute the O-H and C-H bond dissociation enthalpies and enthalpy of tautomerization and to estimate standard gas-phase enthalpies of formation for the radicals and for the parent molecules. The gas-phase enthalpies of formation for the neutral molecules are in excellent agreement with available experimental data, supporting the estimates made for the radicals. The latter are very important for the clarification of the thermochemistry of many beta-diketonato metal complexes previously reported in the literature. Importantly, when substituents R = -CHR' are attached to the beta-diketone's scaffold, C-H homolytic bond cleavage is always favored with respect to O-H bond scission.
Collapse
Affiliation(s)
- José R B Gomes
- Centro de Investigação em Química, Departamento de Química, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre 687, P-4169-007 Porto, Portugal
| | | |
Collapse
|