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Benjamin I. Chemical Reaction Dynamics at Liquid Interfaces: A Computational Approach. PROGRESS IN REACTION KINETICS AND MECHANISM 2019. [DOI: 10.3184/007967402103165360] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Recent advances in experimental and theoretical studies of liquid interfaces provide remarkable evidence for the unique properties of these systems. In this review we examine how these properties affect the thermodynamics and kinetics of chemical reactions which take place at the liquid/vapor interface and at the liquid/liquid interface. We demonstrate how the rapidly varying density and viscosity, the marked changes in polarity and the surface roughness manifest themselves in isomerization, electron transfer and photodissociation reactions.
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Affiliation(s)
- Ilan Benjamin
- Department of Chemistry, University of California, Santa Cruz, California 95064, USA
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2
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Computational study on the O- and Cl-loss dissociations of ClOO. Chem Phys 2019. [DOI: 10.1016/j.chemphys.2018.09.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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3
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Hayes SC, Wallace PM, Bolinger JC, Reid PJ. Investigating the phase-dependent photochemical reaction dynamics of chlorine dioxide using resonance Raman spectroscopy. INT REV PHYS CHEM 2010. [DOI: 10.1080/01442350210156024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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4
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Bixby TJ, Bolinger JC, Patterson JD, Reid PJ. Femtosecond pump-probe studies of actinic-wavelength dependence in aqueous chlorine dioxide photochemistry. J Chem Phys 2009; 130:154503. [PMID: 19388755 DOI: 10.1063/1.3116108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The actinic or photolysis-wavelength dependence of aqueous chlorine dioxide (OClO) photochemistry is investigated using femtosecond pump-probe spectroscopy. Following photoexcitation at 310, 335, and 410 nm the photoinduced evolution in optical density is measured from the UV to the near IR. Analysis of the optical-density evolution illustrates that the quantum yield for atomic chlorine production (Phi(Cl)) increases with actinic energy, with Phi(Cl)=0.16+/-0.02 for 410 nm excitation and increasing to 0.25+/-0.01 and 0.54+/-0.10 for 335 and 310 nm excitations, respectively. Consistent with previous studies, the production of Cl occurs through two channels, with one channel corresponding to prompt (<5 ps) Cl formation and the other corresponding to the thermal decomposition of ClOO formed by OClO photoisomerization. The partitioning between Cl production channels is dependent on actinic energy, with prompt Cl production enhanced with an increase in actinic energy. Limited evidence is found for enhanced ClO production with an increase in actinic energy. Stimulated emission and excited-state absorption features associated with OClO populating the optically prepared (2)A(2) surface decrease with an increase in actinic energy suggesting that the excited-state decay dynamics are also actinic energy dependent. The studies presented here provide detailed information on the actinic-wavelength dependence of OClO photochemistry in aqueous solution.
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Affiliation(s)
- Teresa J Bixby
- Department of Chemistry, University of Washington, P.O. Box 351700, Seattle, Washington 98195, USA
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5
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Cooksey CC, Reid PJ. The Phase-dependent Photochemical Reaction Dynamics of Halooxides and Nitrosyl Halides¶. Photochem Photobiol 2007. [DOI: 10.1111/j.1751-1097.2004.tb00103.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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6
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Bolinger JC, Bixby TJ, Reid PJ. Time-resolved infrared absorption studies of the solvent-dependent vibrational relaxation dynamics of chlorine dioxide. J Chem Phys 2005; 123:084503. [PMID: 16164308 DOI: 10.1063/1.2000234] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We report a series of time-resolved infrared absorption studies on chlorine dioxide (OClO) dissolved in H2O, D2O, and acetonitrile. Following the photoexcitation at 401 nm, the evolution in optical density for frequencies corresponding to asymmetric stretch of OClO is measured with a time resolution of 120+/-50 fs. The experimentally determined optical-density evolution is compared with theoretical models of OClO vibrational relaxation derived from collisional models as well as classical molecular-dynamics (MD) studies. The vibrational relaxation rates in D2O are reduced by a factor of 3 relative to H2O consistent with the predictions of MD. This difference reflects modification of the frequency-dependent solvent-solute coupling accompanying isotopic substitution of the solvent. Also, the geminate-recombination quantum yield for the primary photofragments resulting in the reformation of ground-state OClO is reduced in D2O relative to H2O. It is proposed that this reduction reflects enhancement of the dissociation rate accompanying vibrational excitation along the asymmetric-stretch coordinate. In contrast to H2O and D2O, the vibrational-relaxation dynamics in acetonitrile are not well described by the theoretical models. Reproduction of the optical-density evolution in acetonitrile requires significant modification of the frequency-dependent solvent-solute coupling derived from MD. It is proposed that this modification reflects vibrational-energy transfer from the asymmetric stretch of OClO to the methyl rock of acetonitrile. In total, the results presented here provide a detailed description of the solvent-dependent geminate-recombination and vibrational-relaxation dynamics of OClO in solution.
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Affiliation(s)
- Joshua C Bolinger
- Box 351700, Department of Chemistry, University of Washington, Seattle, Washington 98195, USA
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7
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Reduced mechanism for the 366nm chlorine dioxide photodecomposition in N2-saturated aqueous solutions. J Photochem Photobiol A Chem 2005. [DOI: 10.1016/j.jphotochem.2004.09.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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8
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Bolinger JC, Hayes SC, Reid PJ. Time resolved infrared absorption studies of geminate recombination and vibrational relaxation in OClO photochemistry. J Chem Phys 2004; 121:4795-803. [PMID: 15332913 DOI: 10.1063/1.1778373] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Ultrafast time-resolved infrared absorption studies of aqueous chlorine dioxide (OClO) photochemistry are reported. Following photoexcitation at 401 nm, the evolution in optical density at frequencies between 1000 to 1100 cm(-1) is monitored to investigate vibrational energy deposition and relaxation along the asymmetric-stretch coordinate following the reformation of ground-state OClO via geminate recombination of the primary photofragments. The measured kinetics are compared to two proposed models for the vibrational-relaxation dynamics along the asymmetric-stretch coordinate. This comparison demonstrates that the perturbation model derived from molecular dynamics studies is capable of qualitatively reproducing the observed kinetics, where the collisional model employed in previous UV-pump, visible probe experiments demonstrates poor agreement with experiment. The ability of the perturbation model to reproduce the optical-density evolution observed in these studies demonstrates that for aqueous OClO, frequency dependence of the solvent-solute coupling is important in defining the level-dependent vibrational relaxation rates along the asymmetric-stretch coordinate. The absence of optical-density evolution corresponding to the population of higher vibrational levels (n>8) along the asymmetric-stretch coordinate suggests that following geminate recombination, energy is initially deposited into a local Cl-O stretch, with the relaxation of vibrational energy from this coordinate providing for delayed vibrational excitation of the asymmetric- and symmetric-stretch coordinates relative to geminate recombination, as previously observed.
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Affiliation(s)
- Joshua C Bolinger
- Department of Chemistry, University of Washington, Seattle, Washington 98195, USA
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9
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Cooksey CC, Reid PJ. The Phase-dependent Photochemical Reaction Dynamics of Halooxides and Nitrosyl Halides¶. Photochem Photobiol 2004. [DOI: 10.1562/0031-8655(2004)080<0386:tpprdo>2.0.co;2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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10
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Wallace PM, Bolinger JC, Hayes SC, Reid PJ. On the actinic wavelength dependence of OClO photochemistry in solution. J Chem Phys 2003. [DOI: 10.1063/1.1531613] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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11
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Abstract
Low pressure flash thermolysis of different precursor molecules containing-ClO, -ClO3 or -OClO3 yield, when highly diluted in Ne or O2 and subsequent quenching of the products in a matrix at 5 or 15 K, ClOx (x = 1, 3, 4) radicals, respectively. If Ne or O2 gas is directed over solid ClO2 at -120 degrees C and the resulting gas mixtures are immediately deposited as a matrix, a high fraction of (OClO)2 is trapped. This enables recording of IR and UV spectra of weakly bonded (OClO)2 dimers and detailed studying of their photochemistry. For Ne or O2 matrix isolated ClO radicals the vibrational wavenumbers and electronic transitions are only slightly affected compared with the gas phase. In this study strong evidence is found for long lived ClO in the electronically excited 2 [symbol: see text] 1/2 state. A comprehensive IR study of Ne matrix isolated ClO3 (fundamentals at 1081, 905, 567, 476 cm-1) yield i) a reliable force field; ii) a OClO bond angle of alpha e = 113.8 +/- 1 degrees and iii) a ClO bond length of 148.5 +/- 2 pm in agreement with predicted data from quantum chemical calculations. The UV/Vis spectrum of ClO3 isolated in a Ne matrix (lambda max at 32,100 and 23,150 cm-1) agrees well with the photoelectron spectrum of ClO3- and theoretical predictions. The origin of the structured high energy absorption is at 22,696 cm-1 and three fundamentals (794, 498, 280 cm-1) are detected in the C2E state. By photolysis of ClO3 with visible light the complex ClO.O2 with ClO in the 2 [symbol: see text] 1/2 state is formed. In an extended spectroscopic study of the elusive ClO4 radical, isolated in a Ne or O2 matrix, three additional IR bands, a complete UV spectrum and a strong interaction with O2 are found. This leads to the conclusion that ClO4 exhibits C2v or Cs symmetry with a shallow potential minimum and forms with O2 the previously unknown peroxy radical O3ClO-O2. All these results are discussed in the context of recent developments in the chemistry and spectroscopy of the important and interesting ClOx (x = 1-4) family of radicals.
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Affiliation(s)
- Rodion Kopitzky
- Fakultät 4, Anorganische Chemie Gerhard-Mercator Universität Duisburg, Lotharstrasse 1 47048 Duisburg, Germany
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Chorny I, Vieceli J, Benjamin I. Photodissociation and Vibrational Relaxation of OClO at Liquid Surfaces. J Phys Chem B 2002. [DOI: 10.1021/jp021796m] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ilya Chorny
- Department of Chemistry, University of California, Santa Cruz, California 95064
| | - John Vieceli
- Department of Chemistry, University of California, Santa Cruz, California 95064
| | - Ilan Benjamin
- Department of Chemistry, University of California, Santa Cruz, California 95064
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Chorny I, Vieceli J, Benjamin I. Molecular dynamics study of the vibrational relaxation of OClO in bulk liquids. J Chem Phys 2002. [DOI: 10.1063/1.1471558] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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14
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Chorny I, Vieceli J, Benjamin I. Molecular dynamics study of the photodissociation of OClO in bulk liquids. J Chem Phys 2002. [DOI: 10.1063/1.1471557] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Reid PJ. Investigating the Phase-Dependent Reactivity of Chlorine Dioxide Using Resonance Raman Spectroscopy. J Phys Chem A 2002. [DOI: 10.1021/jp013491y] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Philip J. Reid
- Department of Chemistry, University of Washington, Box 351700, Seattle, Washington 98195
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16
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Hayes SC, Thomsen CL, Reid PJ. The production and decay kinetics of ClOO in water and freon-11: A time-resolved resonance raman study. J Chem Phys 2001. [DOI: 10.1063/1.1418733] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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17
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Hayes SC, Cooksey CC, Wallace PM, Reid PJ. Femtosecond UV Pump/Near-IR Probe Studies of the Solvent-Dependent Excited-State Decay Dynamics of Chlorine Dioxide. J Phys Chem A 2001. [DOI: 10.1021/jp011831+] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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18
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Vieceli J, Chorny I, Benjamin I. Photodissociation of ICN at the liquid/vapor interface of chloroform. J Chem Phys 2001. [DOI: 10.1063/1.1388196] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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19
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Poulsen J, Nymand TM, Keiding SR. Asymmetric stretch vibrational energy relaxation of OClO in liquid water. Chem Phys Lett 2001. [DOI: 10.1016/s0009-2614(01)00745-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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20
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Foster CE, Barham BP, Reid PJ. Resonance Raman intensity analysis of chlorine dioxide dissolved in chloroform: The role of nonpolar solvation. J Chem Phys 2001. [DOI: 10.1063/1.1362297] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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21
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Fidder H, Tschirschwitz F, Dühr O, Nibbering ETJ. Vibrational mode-specific photochemical reaction dynamics of chlorine dioxide in solution. J Chem Phys 2001. [DOI: 10.1063/1.1357202] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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22
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Csordás V, Bubnis B, Fábián I, Gordon G. Kinetics and mechanism of catalytic decomposition and oxidation of chlorine dioxide by the hypochlorite ion. Inorg Chem 2001; 40:1833-6. [PMID: 11312739 DOI: 10.1021/ic001106y] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The oxidation of ClO(2) by OCl(-)is first order with respect to both reactants in the neutral to alkaline pH range: -d[ClO(2)]/dt = 2k(OCl)[ClO(2)][OCl(-)]. The rate constant (T = 298 K, mu = 1.0 M NaClO(4)) and activation parameters are k(OCl) = 0.91 +/- 0.02 M(-1) s(-1), DeltaH = 66.5 +/- 0.9 kJ/mol, and DeltaS(++) = -22.3 +/- 2.9 J/(mol K). In alkaline solution, pH > 9, the primary products of the reaction are the chlorite and chlorate ions and consumption of the hypochlorite ion is not observed. The hypochlorite ion is consumed in increasing amounts, and the production of the chlorite ion ceases when the pH is decreased. The stoichiometry is kinetically controlled, and the reactants/products ratios are determined by the relative rates of the production and consumption of the chlorite ion in the ClO(2)/OCl(-) and HOCl/ClO(2)(-) reactions, respectively.
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Affiliation(s)
- V Csordás
- Department of Inorganic and Analytical Chemistry, University of Debrecen, P.O.B. 21, Debrecen H-4010, Hungary
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Philpott MP, Hayes SC, Thomsen CL, Reid PJ. Intermolecular hydrogen bonding in chlorine dioxide photochemistry: A time-resolved resonance Raman study. Chem Phys 2001. [DOI: 10.1016/s0301-0104(00)00370-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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24
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Thomsen CL, Philpott MP, Hayes SC, Reid PJ. The formation of ClOO following the photoexcitation of aqueous OClO studied by two-color, time-resolved resonance Raman spectroscopy. J Chem Phys 2000. [DOI: 10.1063/1.480540] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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25
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Hayes SC, Philpott MP, Mayer SG, Reid PJ. A Time-Resolved Resonance Raman Study of Chlorine Dioxide Photochemistry in Water and Acetonitrile. J Phys Chem A 1999. [DOI: 10.1021/jp9914065] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sophia C. Hayes
- Department of Chemistry, Box 351700, University of Washington, Seattle, Washington 98195
| | - Matthew P. Philpott
- Department of Chemistry, Box 351700, University of Washington, Seattle, Washington 98195
| | - Steven G. Mayer
- Department of Chemistry, Box 351700, University of Washington, Seattle, Washington 98195
| | - Philip J. Reid
- Department of Chemistry, Box 351700, University of Washington, Seattle, Washington 98195
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26
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Forest SE, Stimson MJ, Simon JD. Mechanism for the Photochemical Production of Superoxide by Quinacrine. J Phys Chem B 1999. [DOI: 10.1021/jp9902809] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Susan E. Forest
- Department of Chemistry, P. M. Gross Chemistry Laboratory, Duke University, Durham, North Carolina 27708
| | - Michael J. Stimson
- Department of Chemistry, P. M. Gross Chemistry Laboratory, Duke University, Durham, North Carolina 27708
| | - John D. Simon
- Department of Chemistry, P. M. Gross Chemistry Laboratory, Duke University, Durham, North Carolina 27708
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27
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Esposito AP, Stedl T, Jónsson H, Reid PJ, Peterson KA. Absorption and Resonance Raman Study of the 2B1(X)−2A2(A) Transition of Chlorine Dioxide in the Gas Phase. J Phys Chem A 1999. [DOI: 10.1021/jp984368i] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Anthony P. Esposito
- Department of Chemistry, University of Washington, P.O. Box 351700, Seattle, Washington 98195
| | - Todd Stedl
- Department of Chemistry, University of Washington, P.O. Box 351700, Seattle, Washington 98195
| | - Hannes Jónsson
- Department of Chemistry, University of Washington, P.O. Box 351700, Seattle, Washington 98195
| | - Philip J. Reid
- Department of Chemistry, University of Washington, P.O. Box 351700, Seattle, Washington 98195
| | - Kirk A. Peterson
- Department of Chemistry, Washington State University, 2710 University Drive, Pullman, Washington 99164-4630
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28
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Philpott MJ, Hayes SC, Reid PJ. Femtosecond pump–probe studies of chlorine dioxide photochemistry in water and acetonitrile. Chem Phys 1998. [DOI: 10.1016/s0301-0104(98)00204-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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29
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Hayes SC, Philpott MJ, Reid PJ. Geminate recombination and vibrational relaxation dynamics of aqueous chlorine dioxide: A time-resolved resonance Raman study. J Chem Phys 1998. [DOI: 10.1063/1.476873] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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30
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Poulsen JA, Thomsen CL, Keiding SR, Tho/gersen J. Vibrational relaxation of ClO2 in water. J Chem Phys 1998. [DOI: 10.1063/1.476274] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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31
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Foster CE, Reid PJ. Excited-State Reaction Dynamics of Chlorine Dioxide in Water from Absolute Resonance Raman Intensities. J Phys Chem A 1998. [DOI: 10.1021/jp981002x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Catherine E. Foster
- Department of Chemistry, Box 351700, University of Washington, Seattle, Washington 98195
| | - Philip J. Reid
- Department of Chemistry, Box 351700, University of Washington, Seattle, Washington 98195
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Thøgersen J, Thomsen CL, Poulsen JA, Keiding SR. Chemical Reactions in Liquids: Photolysis of OClO in Water. J Phys Chem A 1998. [DOI: 10.1021/jp980310s] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- J. Thøgersen
- Department of Chemistry, University of Aarhus, Langelandsgade 140, DK-8000 Aarhus C, Denmark
| | - C. L. Thomsen
- Department of Chemistry, University of Aarhus, Langelandsgade 140, DK-8000 Aarhus C, Denmark
| | - J. Aa. Poulsen
- Department of Chemistry, University of Aarhus, Langelandsgade 140, DK-8000 Aarhus C, Denmark
| | - S. R. Keiding
- Department of Chemistry, University of Aarhus, Langelandsgade 140, DK-8000 Aarhus C, Denmark
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33
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Philpott MJ, Charalambous S, Reid PJ. Comparison of chlorine dioxide photochemistry in acetonitrile and water using subpicosecond pump–probe spectroscopy. Chem Phys Lett 1997. [DOI: 10.1016/s0009-2614(97)01164-0] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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34
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Reid PJ, Esposito AP, Foster CE, Beckman RA. Evidence for the 2B1−2A1 electronic transition in chlorine dioxide from resonance Raman depolarization ratios. J Chem Phys 1997. [DOI: 10.1063/1.475028] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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35
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Fenner K, Furlan A, Huber JR. Photofragmentation of OClO Clusters in a Supersonic Jet at 360 and 275 nm. J Phys Chem A 1997. [DOI: 10.1021/jp9710289] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kathrin Fenner
- Physikalisch-Chemisches Institut, der Universität Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland
| | - Alan Furlan
- Physikalisch-Chemisches Institut, der Universität Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland
| | - J. Robert Huber
- Physikalisch-Chemisches Institut, der Universität Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland
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36
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Esposito AP, Foster CE, Beckman RA, Reid PJ. Excited-State Dynamics of Chlorine Dioxide in the Condensed Phase from Resonance Raman Intensities. J Phys Chem A 1997. [DOI: 10.1021/jp9637035] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Anthony P. Esposito
- Department of Chemistry, Box 351700, University of Washington, Seattle, Washington 98195
| | - Catherine E. Foster
- Department of Chemistry, Box 351700, University of Washington, Seattle, Washington 98195
| | - Robert A. Beckman
- Department of Chemistry, Box 351700, University of Washington, Seattle, Washington 98195
| | - Philip J. Reid
- Department of Chemistry, Box 351700, University of Washington, Seattle, Washington 98195
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37
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Neutze R, Hajdu J. Femtosecond time resolution in x-ray diffraction experiments. Proc Natl Acad Sci U S A 1997; 94:5651-5. [PMID: 9159127 PMCID: PMC20833 DOI: 10.1073/pnas.94.11.5651] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
This paper presents the theoretical background for a synthesis of femtosecond spectroscopy and x-ray diffraction. When a diffraction quality crystal with 0.1-0.3 mm overall dimensions is photoactivated by a femtosecond laser pulse (physical length = 0.3 microm), the evolution of molecules at separated points in the crystal will not be simultaneous because a finite time is required for the laser pulse to propagate through the body of the crystal. Utilizing this lack of global crystal synchronization, topographic x-ray diffraction may enable femtosecond temporal resolution to be achieved from reflection profiles in the diffraction pattern with x-ray exposures of picosecond or longer duration. Such x-ray pulses are currently available, and could be used to study femtosecond reaction dynamics at atomic resolution on crystals of both small- and macromolecules. A general treatment of excitation and diffraction geometries in relation to spatial and temporal resolution is presented.
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Affiliation(s)
- R Neutze
- Department of Biochemistry, Biomedical Centre, Uppsala University, Box 576, S-75123 Uppsala, Sweden.
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38
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Thøgersen J, Jepsen PU, Thomsen CL, Poulsen JA, Byberg JR, Keiding SR. Femtosecond Photolysis of ClO2 in Aqueous Solution. J Phys Chem A 1997. [DOI: 10.1021/jp9632302] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- J. Thøgersen
- Department of Chemistry, University of Aarhus, Langelandsgade 140, DK-8000 Aarhus C, Denmark
| | - P. U. Jepsen
- Department of Chemistry, University of Aarhus, Langelandsgade 140, DK-8000 Aarhus C, Denmark
| | - C. L. Thomsen
- Department of Chemistry, University of Aarhus, Langelandsgade 140, DK-8000 Aarhus C, Denmark
| | - J. Aa. Poulsen
- Department of Chemistry, University of Aarhus, Langelandsgade 140, DK-8000 Aarhus C, Denmark
| | - J. R. Byberg
- Department of Chemistry, University of Aarhus, Langelandsgade 140, DK-8000 Aarhus C, Denmark
| | - S. R. Keiding
- Department of Chemistry, University of Aarhus, Langelandsgade 140, DK-8000 Aarhus C, Denmark
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Martini I, Hartland GV. Ultrafast Investigation of Vibrational Relaxation in the S1 Electronic State of HITC. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp9623352] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ignacio Martini
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556
| | - Gregory V. Hartland
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556
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Graham JD, Roberts JT, Anderson LD, Grassian VH. The 367 nm Photochemistry of OClO Thin Films and OClO Adsorbed on Ice. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp962054u] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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