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Gordon BP, Moore FG, Scatena LF, Valley NA, Wren SN, Richmond GL. Model Behavior: Characterization of Hydroxyacetone at the Air-Water Interface Using Experimental and Computational Vibrational Sum Frequency Spectroscopy. J Phys Chem A 2018; 122:3837-3849. [PMID: 29608301 DOI: 10.1021/acs.jpca.8b01193] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Small atmospheric aldehydes and ketones are known to play a significant role in the formation of secondary organic aerosols (SOA). However, many of them are difficult to experimentally isolate, as they tend to form hydration and oligomer species. Hydroxyacetone (HA) is unusual in this class as it contributes to SOA while existing predominantly in its unhydrated monomeric form. This allows HA to serve as a valuable model system for similar secondary organic carbonyls. In this paper the surface behavior of HA at the air-water interface has been investigated using vibrational sum frequency (VSF) spectroscopy and Wilhelmy plate surface tensiometry in combination with computational molecular dynamics simulations and density functional theory calculations. The experimental results demonstrate that HA has a high degree of surface activity and is ordered at the interface. Furthermore, oriented water is observed at the interface, even at high HA concentrations. Spectral features also reveal the presence of both cis and trans HA conformers at the interface, in differing orientations. Molecular dynamics results indicate conformer dependent shifts in HA orientation between the subsurface (∼5 Å deep) and surface. Together, these results provide a picture of a highly dynamic, but statistically ordered, interface composed of multiple HA conformers with solvated water. These results have implications for HA's behavior in aqueous particles, which may affect its role in the atmosphere and SOA formation.
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Affiliation(s)
- Brittany P Gordon
- Department of Chemistry , University of Oregon , 1253 University of Oregon , Eugene , Oregon 97403 , United States
| | - Frederick G Moore
- Department of Physics , Whitman College , Walla Walla , Washington 99362 , United States
| | - Lawrence F Scatena
- Department of Chemistry , University of Oregon , 1253 University of Oregon , Eugene , Oregon 97403 , United States
| | - Nicholas A Valley
- Department of Chemistry , University of Oregon , 1253 University of Oregon , Eugene , Oregon 97403 , United States.,Department of Science and Mathematics , California Northstate University College of Health Sciences , Rancho Cordova , California 95670 , United States
| | - Sumi N Wren
- Department of Chemistry , University of Oregon , 1253 University of Oregon , Eugene , Oregon 97403 , United States.,Department of Air Quality Process Research , Environment and Climate Change Canada (ECCC) , Toronto , Ontario M3H 5T4 , Canada
| | - Geraldine L Richmond
- Department of Chemistry , University of Oregon , 1253 University of Oregon , Eugene , Oregon 97403 , United States
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Lindenmaier R, Scharko NK, Tonkyn RG, Nguyen KT, Williams SD, Johnson TJ. Improved assignments of the vibrational fundamental modes of ortho-, meta-, and para-xylene using gas- and liquid-phase infrared and Raman spectra combined with ab initio calculations: Quantitative gas-phase infrared spectra for detection. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.07.053] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Lindenmaier R, Williams SD, Sams RL, Johnson TJ. Quantitative Infrared Absorption Spectra and Vibrational Assignments of Crotonaldehyde and Methyl Vinyl Ketone Using Gas-Phase Mid-Infrared, Far-Infrared, and Liquid Raman Spectra: s-cis vs s-trans Composition Confirmed via Temperature Studies and ab Initio Methods. J Phys Chem A 2017; 121:1195-1212. [PMID: 27983851 DOI: 10.1021/acs.jpca.6b10872] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Methyl vinyl ketone (MVK) and crotonaldehyde are chemical isomers; both are also important species in tropospheric chemistry. We report quantitative vapor-phase infrared spectra of crotonaldehyde and MVK vapors over the 540-6500 cm-1 range. Vibrational assignments of all fundamental modes are made for both molecules on the basis of far- and mid-infrared vapor-phase spectra, liquid Raman spectra, along with density functional theory and ab initio MP2 and high energy-accuracy compound theoretical models (W1BD). Theoretical results indicate that at room temperature the crotonaldehyde equilibrium mixture is approximately 97% s-trans and only 3% s-cis conformer. Nearly all observed bands are thus associated with the s-trans conformer, but a few appear to be uniquely associated with the s-cis conformer, notably ν16c at 730.90 cm-1, which displays a substantial intensity increase with temperature (70% upon going from 5 to 50 o C). The intensity of the corresponding mode of the s-trans conformer decreases with temperature. Under the same conditions, the MVK equilibrium mixture is approximately 69% s-trans conformer and 31% s-cis. W1BD calculations indicate that for MVK this is one of those (rare) cases where there are comparable populations of both conformers, approximately doubling the number of observed bands and exacerbating the vibrational assignments. We uniquely assign the bands associated with both the MVK s-cis conformer as well as those of the s-trans, thus completing the vibrational analyses of both conformers from the same set of experimental spectra. Integrated band intensities are reported for both molecules along with global warming potential values. Using the quantitative IR data, potential bands for atmospheric monitoring are also discussed.
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Affiliation(s)
- Rodica Lindenmaier
- Pacific Northwest National Laboratory , Richland, Washington 99354, United States
| | - Stephen D Williams
- A. R. Smith Department of Chemistry, Appalachian State University , Boone, North Carolina 28618, United States
| | - Robert L Sams
- Pacific Northwest National Laboratory , Richland, Washington 99354, United States
| | - Timothy J Johnson
- Pacific Northwest National Laboratory , Richland, Washington 99354, United States
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Lindenmaier R, Tipton N, Sams RL, Brauer CS, Blake TA, Williams SD, Johnson TJ. Assignment of the Fundamental Modes of Hydroxyacetone Using Gas-Phase Infrared, Far-Infrared, Raman, and ab Initio Methods: Band Strengths for Atmospheric Measurements. J Phys Chem A 2016; 120:5993-6003. [DOI: 10.1021/acs.jpca.6b05045] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rodica Lindenmaier
- Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Nicole Tipton
- A.
R. Smith Department of Chemistry, Appalachian State University, Boone, North Carolina 28618, United States
| | - Robert L. Sams
- Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Carolyn S. Brauer
- Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Thomas A. Blake
- Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Stephen D. Williams
- A.
R. Smith Department of Chemistry, Appalachian State University, Boone, North Carolina 28618, United States
| | - Timothy J. Johnson
- Pacific Northwest National Laboratory, Richland, Washington 99354, United States
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Johnson TJ, Sams RL, Profeta LTM, Akagi SK, Burling IR, Yokelson RJ, Williams SD. Quantitative IR Spectrum and Vibrational Assignments for Glycolaldehyde Vapor: Glycolaldehyde Measurements in Biomass Burning Plumes. J Phys Chem A 2013; 117:4096-107. [DOI: 10.1021/jp311945p] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Timothy J. Johnson
- Pacific Northwest National Laboratory, Richland, Washington
99354, United States
| | - Robert L. Sams
- Pacific Northwest National Laboratory, Richland, Washington
99354, United States
| | - Luisa T. M. Profeta
- Pacific Northwest National Laboratory, Richland, Washington
99354, United States
| | - Sheryl K. Akagi
- Department
of Chemistry, University of Montana, Missoula, Montana 59812, United States
| | - Ian R. Burling
- Department
of Chemistry, University of Montana, Missoula, Montana 59812, United States
| | - Robert J. Yokelson
- Department
of Chemistry, University of Montana, Missoula, Montana 59812, United States
| | - Stephen D. Williams
- A. R. Smith Department of Chemistry, Appalachian State University, Boone, North Carolina 28618, United
States
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Profeta LTM, Sams RL, Johnson TJ, Williams SD. Quantitative infrared intensity studies of vapor-phase glyoxal, methylglyoxal, and 2,3-butanedione (diacetyl) with vibrational assignments. J Phys Chem A 2011; 115:9886-900. [PMID: 21755958 DOI: 10.1021/jp204532x] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Glyoxal, methylglyoxal, and 2,3-butanedione (diacetyl) are all known biomass burning effluents and suspected aerosol precursors. Pressure-broadened quantitative infrared spectra of glyoxal, methylglyoxal, and diacetyl vapors covering the 520-6500 cm(-1) range are reported at 0.112 cm(-1) resolution, each with a composite spectrum derived from a minimum of 10 different sample pressures for the compound, representing some of the first quantitative intensity data for these analytes. Many vibrational assignments for methylglyoxal are reported for the first time, as are some near-IR and far-IR bands of glyoxal and diacetyl. To complete the vibrational assignments, the far-infrared spectra (25-600 cm(-1)) of all three vapors are also reported, those of methylglyoxal for the first time. Density functional theory and ab initio MP2 theory are used to help assign vibrational modes. Potential bands for atmospheric monitoring are discussed.
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Affiliation(s)
- Luisa T M Profeta
- Pacific Northwest National Laboratory, Richland, Washington 99354, United States
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Zeng XQ, Yao L, Ge MF, Wang DX. Experimental and theoretical studies on the electronic properties of acetyl pseudohalides CH3C(O)X (X=NCO, NCS and N3). J Mol Struct 2006. [DOI: 10.1016/j.molstruc.2005.12.039] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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