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Wu W, Feng B, Tian Y, He Z, Yang D, Wu G, Yang X. Insights into Ultrafast Relaxation Dynamics of Electronically Excited Furfural and 5-Methylfurfural. J Phys Chem A 2024. [PMID: 39364917 DOI: 10.1021/acs.jpca.4c04503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2024]
Abstract
The ultrafast relaxation dynamics of furfural and 5-methylfurfural following excitation in the ultraviolet range is investigated using the femtosecond time-resolved photoelectron spectroscopy method. Specifically, the pump wavelength-dependent decay dynamics of electronically excited furfural and 5-methylfurfural is discussed on the basis of a detailed analysis of our measured time-resolved photoelectron spectroscopy spectra. Irradiation at all pump wavelengths prepares both furfural and 5-methylfurfural molecules with different vibrational levels in the first optically bright S2 (1ππ*) state, the lifetime of which is measured to be at least hundreds of femtoseconds. Besides the prominent deactivation channels of ring-opening and ring-puckering pathways for the S2(1ππ*) state, we propose that there is a minor decay channel of internal conversion from the initially prepared S2(1ππ*) state to the S1(1nπ*) state. The wavepacket decays out of the Franck-Condon region on the S2(1ππ*) state potential energy surface and bifurcates into different parts somewhere. A small fraction of the wavepacket funnels down to the S1(1nπ*) state via internal conversion. The subsequently populated S1(1nπ*) state contains large vibrational excess energy and decays over a lifetime of 2.5-2.8 ps. One of the deactivation channels of the S1(1nπ*) state is intersystem crossing to the 3ππ* triplet state. In addition, methyl substitution effects on the excited-state dynamics of furfural are also discussed. This experimental study provides new insights into the excitation energy-dependent decay dynamics of photoexcited furfural and 5-methylfurfural.
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Affiliation(s)
- Wenping Wu
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Baihui Feng
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuhuan Tian
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhigang He
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, China
| | - Dongyuan Yang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, China
| | - Guorong Wu
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, China
| | - Xueming Yang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning 116023, China
- Department of Chemistry, College of Science, Southern University of Science and Technology, Shenzhen 518055, China
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Chen YL, Taatjes CA, Meloni G. Estimate of the C-Cl photoionization cross section and absolute photoionization cross sections of chlorinated organic compounds. Chemphyschem 2024; 25:e202300896. [PMID: 38265931 DOI: 10.1002/cphc.202300896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 01/16/2024] [Accepted: 01/23/2024] [Indexed: 01/26/2024]
Abstract
Chlorinated organic compounds are prominently used for industrial production, but their vapors and emission byproducts can cause detrimental effects to human health and the environment. To accurately quantify organochlorine compounds, the absolute photoionization cross section of tetrachloroethylene, chlorobenzene, 1,2-dichlorobenzene, and chloroacetone are measured using multiplexed synchrotron photoionization mass spectrometry at the Advanced Light Source at Lawrence Berkeley National Laboratory. These measurements allow for the estimation of the C-Cl photoionization cross section, increasing quantification accuracy of chlorinated emissions for kinetic modeling and pollutant mitigation. CBS-QB3 calculations of adiabatic ionization energies and thermochemical appearance energies are also presented and agree well with the experimental results.
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Affiliation(s)
- Yilan Lori Chen
- Department of Chemistry, University of San Francisco, 94117, San Francisco, CA, USA
| | - Craig A Taatjes
- Combustion Research Facility, Sandia National Laboratories, 94550, Livermore, CA, USA
| | - Giovanni Meloni
- Department of Chemistry, University of San Francisco, 94117, San Francisco, CA, USA
- Department of Biological and Chemical Sciences, New York Institute of Technology, 11568, Old Westbury, NY, USA
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Rodriguez R, Taatjes CA, Meloni G. Absolute Photoionization Cross Section and Dissociative Ionization Pathways of Alpha-Pinene. Chemphyschem 2024; 25:e202300891. [PMID: 38265929 DOI: 10.1002/cphc.202300891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 01/12/2024] [Accepted: 01/22/2024] [Indexed: 01/26/2024]
Abstract
The absolute photoionization cross section of the monoterpenoid, alpha-pinene (AP), is presented together with the relative photoionization cross sections of its dissociative fragments for the first time. Experiments are performed via multiplexed vacuum ultraviolet (VUV) synchrotron photoionization (PI) mass spectrometry in the 8.0-11.0 eV energy range. Experimental work is conducted at the Advanced Light Source of the Lawrence Berkeley National Laboratory. Dissociative fragments were identified at m/z 121, 94, 93, 92, and 80. The photoionization cross section for the parent mass at 11.0 eV was determined to be 17±4 Mb with a total ionization cross section of 92±23 Mb at the same photon energy. Experimental appearance energies of dissociative ionization fragments and potential dissociative ionization pathways calculated at the G4 level of theory are presented as well.
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Affiliation(s)
- Ryan Rodriguez
- Department of Chemistry, University of San Francisco, San Francisco, CA 94117, USA
| | - Craig A Taatjes
- Combustion Research Facility, Sandia National Laboratories, Livermore, CA 94551, USA
| | - Giovanni Meloni
- Department of Chemistry, University of San Francisco, San Francisco, CA 94117, USA
- Department of Biological and Chemical Sciences, New York Institute of Technology, Old Westbury, NY 11568, USA
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Zhuang H, Chen L, Xu Q, Liu B, Liu P, Wang Z, Jia L. Measurement and summary of photoionization data for biomass-derived compounds. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2022; 36:e9412. [PMID: 36195998 DOI: 10.1002/rcm.9412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 09/30/2022] [Accepted: 10/01/2022] [Indexed: 06/16/2023]
Abstract
RATIONALE Biomass is a potential feedstock for making liquid fuels and valuable chemicals. Quantitative analysis of biomass conversion in real time by photoionization mass spectrometry (PIMS) is an important way to understand the reaction process. However, the lack of photoionization data for biomass-derived compounds limits the research using PIMS. METHODS Measurements of photoionization data were performed with synchrotron vacuum ultraviolet PIMS. Toluene and methanol were used as calibrated references and solvents in this experiment since their photoionization cross-sections (PICS) are well documented in the literature. RESULTS The ionization energies (IEs) of 23 biomass-derived compounds were measured. Among them, the PICSs of 14 compounds were calibrated and presented. Besides, the IEs of 95 other biomass-derived compounds and their typical fragment ions were also summarized. CONCLUSIONS A photoionization database related to IEs and PICSs of biomass-derived compounds (m/z < 200) is established. PICSs of most biomass-derived compounds have low values at the most frequently used photoionization energy of 10.5 eV. Lignin-derived compounds have lower IEs than carbohydrate-derived compounds.
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Affiliation(s)
- Haifeng Zhuang
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, China
| | - Lin Chen
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, China
| | - Qiang Xu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, China
| | - Bingzhi Liu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, China
| | - Peiqi Liu
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, China
| | - Zhandong Wang
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, China
- State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui, China
| | - Liangyuan Jia
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, China
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Smith AR, Di Muzio S, Ramondo F, Meloni G. Peroxy self-reaction leading to the formation of furfural. Phys Chem Chem Phys 2019; 21:10228-10237. [DOI: 10.1039/c8cp07571a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Experimental and theoretical results show the importance of peroxy radical self-reaction.
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Affiliation(s)
- Audrey R. Smith
- Department of Chemistry
- University of San Francisco
- San Francisco
- USA
| | - Simone Di Muzio
- Department of Physical and Chemical Sciences
- University of L’Aquila
- L’Aquila
- Italy
| | - Fabio Ramondo
- Department of Physical and Chemical Sciences
- University of L’Aquila
- L’Aquila
- Italy
| | - Giovanni Meloni
- Department of Physical and Chemical Sciences
- University of L’Aquila
- L’Aquila
- Italy
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Li Y, Meng Q, Wang J, Zhang Y, Cao C, Cheng Z, Yang J, Liu F, Zhang L, Pan Y. Experimental and Theoretical Investigation of the Pyrolysis of Furfural. J Phys Chem A 2018; 123:103-110. [DOI: 10.1021/acs.jpca.8b06261] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yamin Li
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029, People’s Republic of China
| | - Qinghui Meng
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029, People’s Republic of China
| | - Jinglan Wang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Yan Zhang
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029, People’s Republic of China
| | - Chuangchuang Cao
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029, People’s Republic of China
| | - Zhanjun Cheng
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Jiuzhong Yang
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029, People’s Republic of China
| | - Fuyi Liu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029, People’s Republic of China
| | - Lidong Zhang
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029, People’s Republic of China
| | - Yang Pan
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029, People’s Republic of China
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7
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Recent Trends in the Production, Combustion and Modeling of Furan-Based Fuels. ENERGIES 2018. [DOI: 10.3390/en11030512] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Winfough M, Meloni G. Investigation on the absolute and relative photoionization cross sections of 3 potential propargylic fuels. JOURNAL OF MASS SPECTROMETRY : JMS 2017; 52:799-808. [PMID: 28865113 DOI: 10.1002/jms.4023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 08/15/2017] [Accepted: 08/24/2017] [Indexed: 06/07/2023]
Abstract
Absolute photoionization cross sections for 2 potential propargylic fuels (propargylamine and dipropargyl ether) along with the partial ionization cross sections for their dissociative fragments are measured and presented for the first time via synchrotron photoionization mass spectrometry. The experimental setup consists of a multiplexed orthogonal time-of-flight mass spectrometer and is located at the Advanced Light Source facility of the Lawrence Berkeley National Laboratory in Berkeley, California. Data for a third propargylic compound (propargyl alcohol) were taken; however, because of its low signal, due to its weakly bound cation, only the dissociative ionization fragment from the H-loss channel is observed and presented. Suggested pathways leading to formation of dissociative photoionization fragments along with CBS-QB3 calculated adiabatic ionization energies and appearance energies for the dissociative fragments are also presented.
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Affiliation(s)
- Matthew Winfough
- Department of Chemistry, University of San Francisco, San Francisco, California, 94117-1080, USA
| | - Giovanni Meloni
- Department of Chemistry, University of San Francisco, San Francisco, California, 94117-1080, USA
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Fathi Y, Meloni G. Study of the Synchrotron Photoionization Oxidation of 2-Methylfuran Initiated by O( 3P) under Low-Temperature Conditions at 550 and 650 K. J Phys Chem A 2017; 121:6966-6980. [PMID: 28832142 DOI: 10.1021/acs.jpca.7b05561] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The O-(3P)-initiated oxidation of 2-methylfuran (2-MF) was investigated using vacuum-ultraviolet synchrotron radiation from the Advanced Light Source at Lawrence Berkeley National Laboratory. Reaction species were studied by multiplexed photoionization mass spectrometry at 550 and 650 K. The oxygen addition pathway is favored in this reaction, forming four triplet diradicals that undergo intersystem crossing into singlet epoxide species that lead to the formation of products at m/z 30 (formaldehyde), 42 (propene), 54 (1-butyne, 1,3-butadiene, and 2-butyne), and 70 (2-butenal, methyl vinyl ketone, and 3-butenal). Mass-to-charge ratios, photoionization spectra, and adiabatic ionization energies for each primary reaction species were obtained and used to characterize their identities. In addition, by means of electronic structure calculations, potential energy surface scans of the different species produced throughout the oxidation were examined to further validate the primary chemistry occurring. Branching fractions for the formation of the primary products were calculated at the two temperatures and contribute 81.0 ± 21.4% at 550 K and 92.1 ± 25.5% at 650 K.
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Affiliation(s)
- Yasmin Fathi
- Department of Chemistry, University of San Francisco , San Francisco, California 94117, United States
| | - Giovanni Meloni
- Department of Chemistry, University of San Francisco , San Francisco, California 94117, United States
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Price C, Fathi Y, Meloni G. Absolute photoionization cross sections of two cyclic ketones: cyclopentanone and cyclohexanone. JOURNAL OF MASS SPECTROMETRY : JMS 2017; 52:259-270. [PMID: 28231419 DOI: 10.1002/jms.3923] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 02/15/2017] [Accepted: 02/17/2017] [Indexed: 06/06/2023]
Abstract
Absolute photoionization cross sections for cyclopentanone and cyclohexanone, as well as partial ionization cross sections for the dissociative ionized fragments, are presented in this investigation. Experiments are performed via a multiplexed photoionization mass spectrometer utilizing vacuum ultraviolet (VUV) synchrotron radiation supplied by the Advanced Light Source of Lawrence Berkeley National Laboratory. These results allow the quantification of these species that is relevant to investigate the kinetics and combustion reactions of potential biofuels. The CBS-QB3 calculated values for the adiabatic ionization energies agree well with the experimental values, and the identification of possible dissociative fragments is discussed for both systems. Copyright © 2017 John Wiley & Sons, Ltd.
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Affiliation(s)
- Chelsea Price
- Department of Chemistry, University of San Francisco, CA, 94117, USA
| | - Yasmin Fathi
- Department of Chemistry, University of San Francisco, CA, 94117, USA
| | - Giovanni Meloni
- Department of Chemistry, University of San Francisco, CA, 94117, USA
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Jones DB, da Costa RF, Varella MTDN, Bettega MHF, Lima MAP, Blanco F, García G, Brunger MJ. Integral elastic, electronic-state, ionization, and total cross sections for electron scattering with furfural. J Chem Phys 2016; 144:144303. [DOI: 10.1063/1.4945562] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Affiliation(s)
- D. B. Jones
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, South Australia 5001, Australia
| | - R. F. da Costa
- Instituto de Física “Gleb Wataghin,” Universidade Estadual de Campinas, Campinas, 13083-859 São Paulo, Brazil
- Departamento de Física, Universidade Federal do Espírito Santo, 29075-910, Vitória, Espírito Santo, Brazil
| | - M. T. do N. Varella
- Instituto de Física, Universidade de São Paulo, CP 66318, 05315-970 São Paulo, Brazil
| | - M. H. F. Bettega
- Departamento de Física, Universidade Federal do Paraná, CP 19044, 81531-990 Curitiba, Paraná, Brazil
| | - M. A. P. Lima
- Instituto de Física “Gleb Wataghin,” Universidade Estadual de Campinas, Campinas, 13083-859 São Paulo, Brazil
| | - F. Blanco
- Departamento de Física Atómica, Molecular y Nuclear, Universidad Complutense de Madrid, Madrid E-28040, Spain
| | - G. García
- Instituto de Física Fundamental, CSIC, Serrano 113-bis, 28006 Madrid, Spain
| | - M. J. Brunger
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, South Australia 5001, Australia
- Institute of Mathematical Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia
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