1
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Hu J, Bi J, Tuyizere E, Men Z. Investigating local field tuning Fermi resonance of CS 2 by Raman spectroscopy and DFT calculations. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 310:123881. [PMID: 38277784 DOI: 10.1016/j.saa.2024.123881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 12/11/2023] [Accepted: 01/09/2024] [Indexed: 01/28/2024]
Abstract
In the spectroscopic study of polyatomic molecules, Fermi resonance (FR) is a vibrational coupling and energy transfer phenomenon that widely exists intra- and intermolecular. In particular, the FR coupling between the fundamental mode ν1 and the doubling mode 2ν2 of the CS2 molecule has attracted extensive research. In this work, we investigate the effect of local field on tuning the FR of CS2. By analyzing the Raman spectra of CS2 mixed with methanol and ethanol with different mole fractions, the results indicated that weak HBs interactions in binary solutions can be reflected by the linear frequency shift of the C-H bond vibrations (in methanol and ethanol) with different molar concentrations. Furthermore, the geometrical structure was optimized using DFT simulation, and the vibration analysis and interaction energy were carried out. The simulated Raman spectra are in good agreement with the experiments. In addition, high-pressure Raman spectra of CS2 were obtained by diamond anvil cell technique (up to 9.19 GPa) and a pressure-induced phase transition was observed at 1.71 GPa. The results demonstrated that the pressure-induced polymerization phase transition of CS2 molecules causes the close packing and more orderly arrangement of molecules, resulting in the enhancement of FR coupling. HB and high pressure tune the FR of the CS2 molecule differently.
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Affiliation(s)
- Junying Hu
- Key Laboratory of Physics and Technology for Advanced Batteries of Ministry of Education, College of Physics, Jilin University, Changchun 130012, China
| | - Jingkai Bi
- Institute of Quantum Materials and Physics, Henan Academy of Sciences, Zhengzhou 450046, China
| | - Emmanuel Tuyizere
- Key Laboratory of Physics and Technology for Advanced Batteries of Ministry of Education, College of Physics, Jilin University, Changchun 130012, China
| | - Zhiwei Men
- Key Laboratory of Physics and Technology for Advanced Batteries of Ministry of Education, College of Physics, Jilin University, Changchun 130012, China.
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2
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Hu J, Bi J, Sun C, Men Z. Tuning the Fermi resonance of pyridine using ethanol molecules. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 290:122282. [PMID: 36584642 DOI: 10.1016/j.saa.2022.122282] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 12/10/2022] [Accepted: 12/25/2022] [Indexed: 06/17/2023]
Abstract
The Fermi resonance (FR) phenomenon is prevalent in infrared and Raman spectroscopy, and it can be observed in a variety of molecules. In particular, pyridine is a compound that has two Fermi doublets: ν1 ∼ ν12 and ν1 + ν6 ∼ ν8. To analyze the effect of environmental changes on the FR, this study first investigated the Raman spectra of pyridine mixed with ethanol at different concentrations. Results indicated that the FR parameters exhibited a nonlinear dependence on the pyridine concentration fractions, and changing the concentration fraction of pyridine led to different hydrogen bond strengths. Second, the interaction mechanism of pyridine-ethanol binary solutions was analyzed by two-dimensional correlation Raman spectroscopy (2DCRS). In addition, high-pressure Raman spectra of a 50% pyridine-ethanol binary solution were measured up to a pressure of 19.65 GPa by a diamond anvil cell technique, and the phase transition of the binary solution occurred at 6.35 GPa. Finally, the impact of ethanol on the FR of pyridine was determined by deducing the FR parameters at different pressures. The turning point at 6.35 GPa was consistent with the Raman frequency-pressure relationships. The results demonstrated that changes in the intensity of ν1 did not affect the FR of ν1 + ν6 ∼ ν8, whereas the undisturbed frequency ν1 still played a role in the FR. When the pressure was compressed to 13.36 GPa, the disappearance of the Raman peaks (ν1 and ν1') was attributed to the tuning of the molecular symmetry by pressure during the phase transition.
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Affiliation(s)
- Junying Hu
- Key Laboratory of Physics and Technology for Advanced Batteries of Ministry of Education, College of Physics, Jilin University, Changchun 130012, China
| | - Jingkai Bi
- State Key Laboratory of Superhard Materials and International Center of Computational Method & Software, College of Physics, Jilin University, Changchun 130012, China
| | - Chenglin Sun
- Key Laboratory of Physics and Technology for Advanced Batteries of Ministry of Education, College of Physics, Jilin University, Changchun 130012, China
| | - Zhiwei Men
- Key Laboratory of Physics and Technology for Advanced Batteries of Ministry of Education, College of Physics, Jilin University, Changchun 130012, China.
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3
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Liu H, Chen Y, Liu G, Zhou M. Pressure-induced Fermi resonance between fundamental modes in phthalic anhydride. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:204002. [PMID: 35193125 DOI: 10.1088/1361-648x/ac577c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 02/22/2022] [Indexed: 06/14/2023]
Abstract
In situhigh-pressure Raman spectra of phthalic anhydride (PA) have been measured up to 16 GPa through diamond anvil cell technique. The results show that all the Raman bands are blue-shifted with the increase of pressure, accompanied by appearance of some new bands. A Fermi resonance phenomenon of the two Raman fundamental modes of PA at 773 cm-1and 801 cm-1is proposed at pressures above 6.6 GPa, where a possible first-order phase transition occurs. The pressure-induced changes of Fermi resonance parameters, e.g., intensity ratio, coupling coefficient and frequency gap of unperturbed transition, are discussed.
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Affiliation(s)
- HaiRui Liu
- College of physics, Jilin University, Changchun, 130012, People's Republic of China
| | - YinQi Chen
- College of physics, Jilin University, Changchun, 130012, People's Republic of China
| | - Guangtao Liu
- College of physics, Jilin University, Changchun, 130012, People's Republic of China
| | - Mi Zhou
- College of physics, Jilin University, Changchun, 130012, People's Republic of China
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4
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Shenje L, Qu Y, Popik V, Ullrich S. Femtosecond photodecarbonylation of photo-ODIBO studied by stimulated Raman spectroscopy and density functional theory. Phys Chem Chem Phys 2021; 23:25637-25648. [PMID: 34783336 DOI: 10.1039/d1cp03512f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photo-oxa-dibenzocyclooctyne (Photo-ODIBO) undergoes photodecarbonylation under UV excitation to its bright S2 state, forming a highly reactive cyclooctyne, ODIBO. Following 321 nm excitation with sub-50 fs actinic pulses, the excited state evolution and cyclopropenone bond cleavage with CO release were characterized using femtosecond stimulated Raman spectroscopy and time-dependent density functional theory Raman calculations. Analysis of the photo-ODIBO S2 CO Raman band revealed multi-exponential intensity, peak splitting and frequency-shift dynamics. This suggests a stepwise cleavage of the two C-C bonds in the cyclopropenone structure that is completed within <300 fs after excitation. Evidence of intramolecular vibrational relaxation on the S2 state, concurrent with photodecarbonylation, with dynamics matching previous electronic transient absorption spectroscopy, was also observed. This confirms an excited state, as opposed to ground state, photodecarbonylation mechanism resulting in a vibronically excited photoproduct, ODIBO.
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Affiliation(s)
- Learnmore Shenje
- Department of Physics and Astronomy, University of Georgia, Athens, Georgia 30602, USA.
| | - Yingqi Qu
- Department of Physics and Astronomy, University of Georgia, Athens, Georgia 30602, USA.
| | - Vladimir Popik
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, USA
| | - Susanne Ullrich
- Department of Physics and Astronomy, University of Georgia, Athens, Georgia 30602, USA.
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Yu Y, Fan W, Wang Y, Zhou X, Sun J, Liu S. Probe of Alcohol Structures in the Gas and Liquid States Using C⁻H Stretching Raman Spectroscopy. SENSORS (BASEL, SWITZERLAND) 2018; 18:E2061. [PMID: 29958405 PMCID: PMC6068699 DOI: 10.3390/s18072061] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Revised: 06/22/2018] [Accepted: 06/26/2018] [Indexed: 01/16/2023]
Abstract
Vibrational spectroscopy is a powerful tool for probing molecular structures and dynamics since it offers a unique fingerprint that allows molecular identification. One of important aspects of applying vibrational spectroscopy is to develop the probes that can characterize the related properties of molecules such as the conformation and intermolecular interaction. Many examples of vibrational probes have appeared in the literature, including the azide group (⁻N₃), amide group (⁻CONH₂), nitrile groups (⁻CN), hydroxyl group (⁻OH), ⁻CH group and so on. Among these probes, the ⁻CH group is an excellent one since it is ubiquitous in organic and biological molecules and the C⁻H stretching vibrational spectrum is extraordinarily sensitive to the local molecular environment. However, one challenge encountered in the application of C⁻H probes arises from the difficulty in the accurate assignment due to spectral congestion in the C⁻H stretching region. In this paper, recent advances in the complete assignment of C⁻H stretching spectra of aliphatic alcohols and the utility of C⁻H vibration as a probe of the conformation and weak intermolecular interaction are outlined. These results fully demonstrated the potential of the ⁻CH chemical group as a molecular probe.
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Affiliation(s)
- Yuanqin Yu
- Department of Physics, Anhui University, Hefei 230601, China.
| | - Wei Fan
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China.
| | - Yuxi Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China.
| | - Xiaoguo Zhou
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China.
| | - Jin Sun
- Department of Physics, Anhui University, Hefei 230601, China.
| | - Shilin Liu
- Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China.
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6
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Chen L, Zhu W, Lin K, Hu N, Yu Y, Zhou X, Yuan LF, Hu SM, Luo Y. Identification of Alcohol Conformers by Raman Spectra in the C–H Stretching Region. J Phys Chem A 2015; 119:3209-17. [DOI: 10.1021/jp513027r] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
| | | | | | | | - Yuanqin Yu
- School
of Physics and Material Science, Anhui University, Hefei, Anhui 230039, China
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7
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Hsieh WP, Chien YH. High pressure Raman spectroscopy of H2O-CH3OH mixtures. Sci Rep 2015; 5:8532. [PMID: 25704667 PMCID: PMC4336930 DOI: 10.1038/srep08532] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 01/23/2015] [Indexed: 02/02/2023] Open
Abstract
Complex intra-molecular interactions and the hydrogen-bonding network in H2O-volatile mixtures play critical roles in many dynamics processes in physical chemistry, biology, and Earth and planetary sciences. We used high pressure Raman spectroscopy to study the pressure evolution of vibrational frequencies and bonding behavior in H2O-CH3OH mixtures. We found that the presence of low CH3OH content in H2O increases the transition pressure where water crystallizes to ice VI, but does not significantly change the pressure where ice VI transforms to ice VII. Furthermore, the stiffening rates of C-H stretching frequencies dω/dP in CH3OH significantly decrease upon the crystallization of water, and the softening rates of the O-H stretching frequencies of ice VII are suppressed over a narrow pressure range, after which the frequencies of these modes shift with pressure in ways similar to pure CH3OH and ice VII, respectively. Such complex pressure evolution of Raman frequencies along with pronounced variations in Raman intensities of CH3OH within the sample, and the hysteresis of the water-ice VI phase transition suggest pressure-induced segregation of low content CH3OH from ice VII. These findings indicate the significant influence of volatiles on the crystallization of sub-surface ocean and thermal evolution within large icy planets and satellites.
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Affiliation(s)
- Wen-Pin Hsieh
- Institute of Earth Sciences, Academia Sinica, Nankang, Taipei. 11529, Taiwan
| | - Yu-Hsiang Chien
- Institute of Earth Sciences, Academia Sinica, Nankang, Taipei. 11529, Taiwan
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8
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Mendoza NJ, Bonales LJ, Baonza VG, Cáceres M. Local hydration pressures in methanol aqueous solution: a Raman spectroscopy analysis. J Phys Chem B 2014; 118:9919-25. [PMID: 25080092 DOI: 10.1021/jp5043975] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Raman spectra of methanol-water mixtures were measured over the whole composition range at room conditions. The spectra are used to quantify the strength of intermolecular interactions in terms of local internal pressures. The conclusions derived from the spectroscopic analysis are discussed within the framework of the solvation pressure model using values of the cohesion energy density expected in the mixture. This work demonstrates that an appropriate analysis of Raman spectroscopy experiments can be used to quantify the local internal pressures due to intermolecular interactions in liquid mixtures, provided that high pressure results of the pure liquids are available.
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Affiliation(s)
- Nubia Judith Mendoza
- MALTA-Consolider Team and QUIMAPRES, Departamento de Química Física I, Facultad de Química, Universidad Complutense , 28040 Madrid, Spain
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9
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Chen Y, Men Z, Li J, Li Z, Sun S, Sun C, Gao S, Li Z, Zhou M. Anharmonic coupling between fundamental modes in tetramethylurea. J Chem Phys 2014; 140:164310. [PMID: 24784273 DOI: 10.1063/1.4872159] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In situ high pressure Raman spectra of tetramethylurea have been measured up to 25 GPa, liquid-solid and solid-solid phase transitions were detected at 0.2 GPa and 7.4 GPa, respectively. An unprecedented spectral phenomenon is the observation of a Fermi resonance between the fundamental modes. An exponential relationship between the intensity and the frequency difference was concluded. Pressure provides us a new way to study the correlation between Fermi resonance parameters.
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Affiliation(s)
- Yuanzheng Chen
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, People's Republic of China
| | - Zhiwei Men
- College of Physics, Jilin University, Changchun130012, People's Republic of China
| | - Juntao Li
- College of Physics, Jilin University, Changchun130012, People's Republic of China
| | - Zhanlong Li
- College of Physics, Jilin University, Changchun130012, People's Republic of China
| | - Shengnan Sun
- College of Physics, Jilin University, Changchun130012, People's Republic of China
| | - Chengling Sun
- College of Physics, Jilin University, Changchun130012, People's Republic of China
| | - Shuqin Gao
- College of Physics, Jilin University, Changchun130012, People's Republic of China
| | - Zuowei Li
- College of Physics, Jilin University, Changchun130012, People's Republic of China
| | - Mi Zhou
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, People's Republic of China
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10
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Cuellar KA, Munroe KL, Magers DH, Hammer NI. Noncovalent Interactions in Microsolvated Networks of Trimethylamine N-Oxide. J Phys Chem B 2013; 118:449-59. [DOI: 10.1021/jp408659n] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kristina A. Cuellar
- Department
of Chemistry and Biochemistry, University of Mississippi, P.O. Box 1848, University, Mississippi 38655, United States
| | - Katherine L. Munroe
- Department
of Chemistry and Biochemistry, Mississippi College, P.O. Box 4036, Clinton, Mississippi 39058, United States
| | - David H. Magers
- Department
of Chemistry and Biochemistry, Mississippi College, P.O. Box 4036, Clinton, Mississippi 39058, United States
| | - Nathan I. Hammer
- Department
of Chemistry and Biochemistry, University of Mississippi, P.O. Box 1848, University, Mississippi 38655, United States
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11
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Yu Y, Wang Y, Lin K, Hu N, Zhou X, Liu S. Complete Raman Spectral Assignment of Methanol in the C–H Stretching Region. J Phys Chem A 2013; 117:4377-84. [DOI: 10.1021/jp400886y] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuanqin Yu
- School of Physics and Material
Science, Anhui University, Hefei, Anhui
230039, China
- Hefei National
Laboratory for
Physical Sciences at the Microscale, Department of Chemical
Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yuxi Wang
- Hefei National
Laboratory for
Physical Sciences at the Microscale, Department of Chemical
Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Ke Lin
- Hefei National
Laboratory for
Physical Sciences at the Microscale, Department of Chemical
Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Naiyin Hu
- Hefei National
Laboratory for
Physical Sciences at the Microscale, Department of Chemical
Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xiaoguo Zhou
- Hefei National
Laboratory for
Physical Sciences at the Microscale, Department of Chemical
Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Shilin Liu
- Hefei National
Laboratory for
Physical Sciences at the Microscale, Department of Chemical
Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
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12
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Ribeiro MCC. High Viscosity of Imidazolium Ionic Liquids with the Hydrogen Sulfate Anion: A Raman Spectroscopy Study. J Phys Chem B 2012; 116:7281-90. [DOI: 10.1021/jp302091d] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Mauro C. C. Ribeiro
- Laboratório
de Espectroscopia Molecular, Instituto
de Química, Universidade de São Paulo CP 26077, CEP 05513-970, São Paulo, SP, Brazil
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13
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Sokolov VV. Molecular dynamics simulation of liquid methanol. II. Unified assignment of infrared, raman, and sum frequency generation vibrational spectra in methyl C–H stretching region. J Chem Phys 2011; 134:024510. [DOI: 10.1063/1.3514146] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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14
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Sokolov VV. Molecular dynamics simulation of liquid methanol. I. Molecular modeling including C–H vibration and fermi resonance. J Chem Phys 2011; 134:024509. [DOI: 10.1063/1.3514139] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
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15
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Wågberg T, Liu B, Orädd G, Eliasson B, Edman L. Cationic polyfluorene: Conformation and aggregation in a “good” solvent. Eur Polym J 2009. [DOI: 10.1016/j.eurpolymj.2009.07.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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