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Bregnhøj M, Thorning F, Ogilby PR. Singlet Oxygen Photophysics: From Liquid Solvents to Mammalian Cells. Chem Rev 2024; 124:9949-10051. [PMID: 39106038 DOI: 10.1021/acs.chemrev.4c00105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/07/2024]
Abstract
Molecular oxygen, O2, has long provided a cornerstone for studies in chemistry, physics, and biology. Although the triplet ground state, O2(X3Σg-), has garnered much attention, the lowest excited electronic state, O2(a1Δg), commonly called singlet oxygen, has attracted appreciable interest, principally because of its unique chemical reactivity in systems ranging from the Earth's atmosphere to biological cells. Because O2(a1Δg) can be produced and deactivated in processes that involve light, the photophysics of O2(a1Δg) are equally important. Moreover, pathways for O2(a1Δg) deactivation that regenerate O2(X3Σg-), which address fundamental principles unto themselves, kinetically compete with the chemical reactions of O2(a1Δg) and, thus, have practical significance. Due to technological advances (e.g., lasers, optical detectors, microscopes), data acquired in the past ∼20 years have increased our understanding of O2(a1Δg) photophysics appreciably and facilitated both spatial and temporal control over the behavior of O2(a1Δg). One goal of this Review is to summarize recent developments that have broad ramifications, focusing on systems in which oxygen forms a contact complex with an organic molecule M (e.g., a liquid solvent). An important concept is the role played by the M+•O2-• charge-transfer state in both the formation and deactivation of O2(a1Δg).
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Affiliation(s)
- Mikkel Bregnhøj
- Department of Chemistry, Aarhus University, 140 Langelandsgade, Aarhus 8000, Denmark
| | - Frederik Thorning
- Department of Chemistry, Aarhus University, 140 Langelandsgade, Aarhus 8000, Denmark
| | - Peter R Ogilby
- Department of Chemistry, Aarhus University, 140 Langelandsgade, Aarhus 8000, Denmark
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Mendonca J, Strong K, Wunch D, Toon GC, Long DA, Hodges JT, Sironneau VT, Franklin JE. Using a Speed-Dependent Voigt Line Shape to Retrieve O 2 from Total Carbon Column Observing Network Solar Spectra to Improve Measurements of XCO 2. ATMOSPHERIC MEASUREMENT TECHNIQUES 2019; 12:10.5194/amt-12-35-2019. [PMID: 31579431 PMCID: PMC6774361 DOI: 10.5194/amt-12-35-2019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
High-resolution, laboratory, absorption spectra of the a 1 Δ g ← X 3 ∑ g - oxygen (O2) band measured using cavity ring-down spectroscopy were fitted using the Voigt and speed-dependent Voigt line shapes. We found that the speed-dependent Voigt line shape was better able to model the measured absorption coefficients than the Voigt line shape. We used these line shape models to calculate absorption coefficients to retrieve atmospheric total columns abundances of O2 from ground-based spectra from four Fourier transform spectrometers that are apart of the Total Carbon Column Observing Network (TCCON) Lower O2 total columns were retrieved with the speed-dependent Voigt line shape, and the difference between the total columns retrieved using the Voigt and speed-dependent Voigt line shapes increased as a function of solar zenith angle. Previous work has shown that carbon dioxide (CO2) total columns are better retrieved using a speed-dependent Voigt line shape with line mixing. The column-averaged dry-air mole fraction of CO2 (XCO2) was calculated using the ratio between the columns of CO2 and O2 retrieved (from the same spectra) with both line shapes from measurements made over a one-year period at the four sites. The inclusion of speed dependence in the O2 retrievals significantly reduces the airmass dependence of XCO2 and the bias between the TCCON measurements and calibrated integrated aircraft profile measurements was reduced from 1% to 0.4%. These results suggest that speed dependence should be included in the forward model when fitting near-infrared CO2 and O2 spectra to improve the accuracy of XCO2 measurements.
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Affiliation(s)
- Joseph Mendonca
- Department of Physics, University of Toronto, Toronto, ON, Canada
| | - Kimberly Strong
- Department of Physics, University of Toronto, Toronto, ON, Canada
| | - Debra Wunch
- Department of Physics, University of Toronto, Toronto, ON, Canada
| | | | - David A. Long
- National Institute of Standards and Technology, Gaithersburg, MD, USA
| | - Joseph T. Hodges
- National Institute of Standards and Technology, Gaithersburg, MD, USA
| | | | - Jonathan E. Franklin
- Harvard John A. Paulson School of Engineering and Applied Sciences, Cambridge, MA, USA
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Bregnhøj M, Westberg M, Jensen F, Ogilby PR. Solvent-dependent singlet oxygen lifetimes: temperature effects implicate tunneling and charge-transfer interactions. Phys Chem Chem Phys 2016; 18:22946-61. [DOI: 10.1039/c6cp01635a] [Citation(s) in RCA: 115] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new model for an old problem: a barrier to account for temperature effects on singlet oxygen lifetimes.
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Affiliation(s)
| | | | - Frank Jensen
- Chemistry Department
- Aarhus University
- Aarhus
- Denmark
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Zagidullin MV, Pershin AA, Azyazov VN, Mebel AM. Luminescence of the (O2(a(1)Δ(g)))2 collisional complex in the temperature range of 90-315 K: Experiment and theory. J Chem Phys 2015; 143:244315. [PMID: 26723679 DOI: 10.1063/1.4938425] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Experimental and theoretical studies of collision induced emission of singlet oxygen molecules O2(a(1)Δg) in the visible range have been performed. The rate constants, half-widths, and position of peaks for the emission bands of the (O2(a(1)Δg))2 collisional complex centered around 634 nm (2) and 703 nm (3) have been measured in the temperature range of 90-315 K using a flow-tube apparatus that utilized a gas-liquid chemical singlet oxygen generator. The absolute values of the spontaneous emission rate constants k2 and k3 are found to be similar, with the k3/k2 ratio monotonically decreasing from 1.1 at 300 K to 0.96 at 90 K. k2 slowly decreases with decreasing temperature but a sharp increase in its values is measured below 100 K. The experimental results were rationalized in terms of ab initio calculations of the ground and excited potential energy and transition dipole moment surfaces of singlet electronic states of the (O2)2 dimole, which were utilized to compute rate constants k2 and k3 within a statistical model. The best theoretical results reproduced experimental rate constants with the accuracy of under 40% and correctly described the observed temperature dependence. The main contribution to emission process (2), which does not involve vibrational excitation of O2 molecules at the ground electronic level, comes from the spin- and symmetry-allowed 1(1)Ag←(1)B3u transition in the rectangular H configuration of the dimole. Alternatively, emission process (3), in which one of the monomers becomes vibrationally excited in the ground electronic state, is found to be predominantly due to the vibronically allowed 1(1)Ag←2(1)Ag transition induced by the asymmetric O-O stretch vibration in the collisional complex. The strong vibronic coupling between nearly degenerate excited singlet states of the dimole makes the intensities of vibronically and symmetry-allowed transitions comparable and hence the rate constants k2 and k3 close to one another.
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Affiliation(s)
- M V Zagidullin
- Samara State Aerospace University, Samara 443086, Russia
| | - A A Pershin
- Samara State Aerospace University, Samara 443086, Russia
| | - V N Azyazov
- Samara State Aerospace University, Samara 443086, Russia
| | - A M Mebel
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, USA
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Yu S, Miller CE, Drouin BJ, Müller HSP. High resolution spectral analysis of oxygen. I. Isotopically invariant Dunham fit for the X3Σg−, a1Δg, b1Σg+ states. J Chem Phys 2012; 137:024304. [DOI: 10.1063/1.4719170] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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Plane JMC, Whalley CL, Frances-Soriano L, Goddard A, Harvey JN, Glowacki DR, Viggiano AA. O2(a1Δg) + Mg, Fe, and Ca: Experimental kinetics and formulation of a weak collision, multiwell master equation with spin-hopping. J Chem Phys 2012; 137:014310. [DOI: 10.1063/1.4730423] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Hidemori T, Akai N, Kawai A, Shibuya K. Intensity Enhancement of Weak O2 a1Δg → X3Σg– Emission at 1270 nm by Collisions with Foreign Gases. J Phys Chem A 2012; 116:2032-8. [DOI: 10.1021/jp2124586] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Takehiro Hidemori
- Department
of Chemistry, Graduate School of Science
and Engineering, Tokyo Institute of Technology, 2-12-1 H-57, Ohokayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Nobuyuki Akai
- Department
of Chemistry, Graduate School of Science
and Engineering, Tokyo Institute of Technology, 2-12-1 H-57, Ohokayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Akio Kawai
- Department
of Chemistry, Graduate School of Science
and Engineering, Tokyo Institute of Technology, 2-12-1 H-57, Ohokayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Kazuhiko Shibuya
- Department
of Chemistry, Graduate School of Science
and Engineering, Tokyo Institute of Technology, 2-12-1 H-57, Ohokayama, Meguro-ku, Tokyo 152-8551, Japan
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UV-photoexcitation of encounter complexes of oxygen O2–O2 as a source of singlet oxygen O2(1Δg) in gas phase. Chem Phys Lett 2010. [DOI: 10.1016/j.cplett.2009.11.058] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Washenfelder RA, Toon GC, Blavier JF, Yang Z, Allen NT, Wennberg PO, Vay SA, Matross DM, Daube BC. Carbon dioxide column abundances at the Wisconsin Tall Tower site. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2006jd007154] [Citation(s) in RCA: 206] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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10
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Di Stefano G. Linestrength of oxygen’s atmospheric transitions from absorption data. II. The 1.27-μm transition. Chem Phys Lett 2006. [DOI: 10.1016/j.cplett.2006.05.105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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Paterson MJ, Christiansen O, Jensen F, Ogilby PR. Overview of Theoretical and Computational Methods Applied to the Oxygen–Organic Molecule Photosystem. Photochem Photobiol 2006; 82:1136-60. [PMID: 16643088 DOI: 10.1562/2006-03-17-ir-851] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The challenges of using modern theoretical and computational tools to model the unique features of the oxygen-organic molecule photosystem are discussed from a historical and pedagogical perspective. This review is written for the novice, but the problems formulated should stimulate the expert.
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Affiliation(s)
- Martin J Paterson
- Department of Chemistry, University of Aarhus, Arhus, DK-8000, Denmark
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Stiehl JD, Kim TS, McClure SM, Mullins CB. Formation of Molecularly Chemisorbed Oxygen on TiO2-Supported Gold Nanoclusters and Au(111) from Exposure to an Oxygen Plasma Jet. J Phys Chem B 2005; 109:6316-22. [PMID: 16851703 DOI: 10.1021/jp044553y] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We present results of an investigation into the low-temperature formation of molecularly chemisorbed oxygen on a Au/TiO(2) model catalyst and on a Au(111) single crystal during exposure to a plasma jet of oxygen. Through the use of collision-induced desorption measurements and isotopic mixing experiments we show evidence suggesting that at least some of the molecular oxygen is formed as a result of recombination of oxygen atoms on the samples during the plasma exposure. Of course, adsorption of excited molecular oxygen directly from the gas phase may also take place. We also present evidence showing that the adsorption of oxygen atoms on the surface assists in the molecular chemisorption of oxygen on the Au/TiO(2) model catalyst samples. Thus, oxygen molecules impinging on the samples during plasma-jet exposures (plasma jet has approximately 40% dissociation fraction) could have an enhanced probability of adsorption due to simultaneous oxygen atom adsorption.
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Affiliation(s)
- James D Stiehl
- The University of Texas at Austin, Department of Chemical Engineering and Texas Materials Institute, Austin, Texas 78712-0231, USA
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13
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Gupta M, Owano T, Baer DS, O’Keefe A, Williams S. Quantitative determination of singlet oxygen density and temperature for Oxygen-Iodine Laser Applications. Chem Phys Lett 2004. [DOI: 10.1016/j.cplett.2004.10.076] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Williams S, Gupta M, Owano T, Baer DS, O'Keefe A, Yarkony DR, Matsika S. Quantitative detection of singlet O2 by cavity-enhanced absorption. OPTICS LETTERS 2004; 29:1066-1068. [PMID: 15181987 DOI: 10.1364/ol.29.001066] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A method for the practical determination of the absolute concentration of single (a1delta(g)) oxygen is discussed. The method is based on sensitive off-axis integrated-cavity-output spectroscopy (ICOS). Off-axis ICOS allows narrowband, continuous-wave lasers to be used in conjunction with optical cavities to record sensitive absorption measurements. The details of the method as well as spectroscopic data confirming the first observation of the (1, 0) band of the b1sigma(g)(+) - a1delta(g) Noxon system are presented. The absolute transition probabilities for the b1sigma(g)(+) - a1delta(g) Noxon system, which are not known precisely from experiments, are determined by quantum chemistry theory.
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Affiliation(s)
- Skip Williams
- Space Vehicles Directorate, Air Force Research Laboratory, 29 Randolph Road, Hanscom Air Force Base, Massachusetts 01731-3010, USA.
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15
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Schweitzer C, Schmidt R. Physical mechanisms of generation and deactivation of singlet oxygen. Chem Rev 2003; 103:1685-757. [PMID: 12744692 DOI: 10.1021/cr010371d] [Citation(s) in RCA: 1312] [Impact Index Per Article: 62.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Claude Schweitzer
- Institut für Physikalische und Theoretische Chemie, Johann Wolfgang Goethe-Universität, Marie-Curie-Strasse 11, D60439 Frankfurt am Main, Germany
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