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1
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Kajiya D, Saitow KI. Site-Selective Solvation in Supercritical CO2Observed by Raman Spectroscopy: Phenyl Group Leads to Greater Attractive Energy than Chloro Group. J Phys Chem B 2010; 114:16832-7. [DOI: 10.1021/jp107820j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Daisuke Kajiya
- Natural Science Center for Basic Research and Development (N-BARD) and Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-8526, Japan
| | - Ken-ichi Saitow
- Natural Science Center for Basic Research and Development (N-BARD) and Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-8526, Japan
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Dellis D, Skarmoutsos I, Samios J. Molecular simulations of benzene and hexafluorobenzene using new optimized effective potential models: Investigation of the liquid, vapor–liquid coexistence and supercritical fluid phases. J Mol Liq 2010. [DOI: 10.1016/j.molliq.2009.04.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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3
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Cabaço MI, Besnard M, Longelin S, Danten Y. Evolution with the density of CO2 clustering studied by Raman spectroscopy. J Mol Liq 2010. [DOI: 10.1016/j.molliq.2009.09.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kajiya D, Saitow KI. Solvation Structures of cis- and trans-1,2-Dichloroethylene in Supercritical CO2 Investigated by Raman Spectroscopy and Attractive Energy Calculations. J Phys Chem B 2009; 113:13291-9. [DOI: 10.1021/jp903240v] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Daisuke Kajiya
- Natural Science Center for Basic Research and Development (N-BARD), Hiroshima University, 1-3-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-8526, Japan, Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-8526, Japan, and PRESTO, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Ken-ichi Saitow
- Natural Science Center for Basic Research and Development (N-BARD), Hiroshima University, 1-3-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-8526, Japan, Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-8526, Japan, and PRESTO, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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Skarmoutsos I, Guardia E. Local Structural Effects and Related Dynamics in Supercritical Ethanol. 2. Hydrogen-Bonding Network and Its Effect on Single Reorientational Dynamics. J Phys Chem B 2009; 113:8898-910. [DOI: 10.1021/jp901489c] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Ioannis Skarmoutsos
- Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya, B4−B5 Campus Nord UPC, 08034 Barcelona, Catalonia, Spain
| | - Elvira Guardia
- Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya, B4−B5 Campus Nord UPC, 08034 Barcelona, Catalonia, Spain
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Skarmoutsos I, Dellis D, Samios J. The Effect of Intermolecular Interactions on Local Density Inhomogeneities and Related Dynamics in Pure Supercritical Fluids. A Comparative Molecular Dynamics Simulation Study. J Phys Chem B 2009; 113:2783-93. [DOI: 10.1021/jp809271n] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ioannis Skarmoutsos
- Department of Chemistry, Laboratory of Physical Chemistry, University of Athens, Panepistimiopolis 157-71, Athens, Greece
| | - Dimitris Dellis
- Department of Chemistry, Laboratory of Physical Chemistry, University of Athens, Panepistimiopolis 157-71, Athens, Greece
| | - Jannis Samios
- Department of Chemistry, Laboratory of Physical Chemistry, University of Athens, Panepistimiopolis 157-71, Athens, Greece
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Besnard M, Cabaço MI, Talaga D, Danten Y. Raman spectroscopy and ab initio investigations of transient complex formation in CO2-benzene mixtures. J Chem Phys 2008; 129:224511. [DOI: 10.1063/1.3037025] [Citation(s) in RCA: 28] [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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Besnard M, Cabaço MI, Danten Y. Transient Complex Formation in CO2−Hexafluorobenzene Mixtures: a Combined Raman and ab Initio Investigation. J Phys Chem A 2008; 113:184-92. [DOI: 10.1021/jp8068267] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- M. Besnard
- Institut des Sciences Moléculaires, CNRS (UMR 5255), Université Bordeaux 1, 351 Cours de la Libération 33405 Talence Cedex, France, Centro de Física Atómica, Universidade de Lisboa, Avenida Prof. Gama Pinto 2, 1694-003 Lisboa Codex, Portugal, and Departamento de Física, Instituto Superior Técnico, Universidade Técnica de Lisboa, Avenida Rovisco Pais 1049-001 Lisboa, Portugal
| | - M. Isabel Cabaço
- Institut des Sciences Moléculaires, CNRS (UMR 5255), Université Bordeaux 1, 351 Cours de la Libération 33405 Talence Cedex, France, Centro de Física Atómica, Universidade de Lisboa, Avenida Prof. Gama Pinto 2, 1694-003 Lisboa Codex, Portugal, and Departamento de Física, Instituto Superior Técnico, Universidade Técnica de Lisboa, Avenida Rovisco Pais 1049-001 Lisboa, Portugal
| | - Y. Danten
- Institut des Sciences Moléculaires, CNRS (UMR 5255), Université Bordeaux 1, 351 Cours de la Libération 33405 Talence Cedex, France, Centro de Física Atómica, Universidade de Lisboa, Avenida Prof. Gama Pinto 2, 1694-003 Lisboa Codex, Portugal, and Departamento de Física, Instituto Superior Técnico, Universidade Técnica de Lisboa, Avenida Rovisco Pais 1049-001 Lisboa, Portugal
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Kajiya D, Mouri Y, Saitow KI. Difference of Solute−Solvent Interactions of cis- and trans-1,2-Dichloroethylene in Supercritical CO2 Investigated by Raman Spectroscopy. J Phys Chem B 2008; 112:7980-3. [DOI: 10.1021/jp803875x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Daisuke Kajiya
- Natural Science Center for Basic Research and Development (N-BARD), Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-8526, Japan, and PRESTO, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Yutaka Mouri
- Natural Science Center for Basic Research and Development (N-BARD), Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-8526, Japan, and PRESTO, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Ken-ichi Saitow
- Natural Science Center for Basic Research and Development (N-BARD), Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-8526, Japan, and PRESTO, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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Fujisawa T, Terazima M, Kimura Y. Solvent Effects on the Local Structure of p-Nitroaniline in Supercritical Water and Supercritical Alcohols. J Phys Chem A 2008; 112:5515-26. [DOI: 10.1021/jp710530m] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tomotsumi Fujisawa
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan, and Division of Research Initiatives, International Innovation Center, Kyoto University, Kyoto, 606-8501, Japan
| | - Masahide Terazima
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan, and Division of Research Initiatives, International Innovation Center, Kyoto University, Kyoto, 606-8501, Japan
| | - Yoshifumi Kimura
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan, and Division of Research Initiatives, International Innovation Center, Kyoto University, Kyoto, 606-8501, Japan
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11
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Cabaço MI, Longelin S, Danten Y, Besnard M. Transient dimer formation in supercritical carbon dioxide as seen from Raman scattering. J Chem Phys 2008; 128:074507. [PMID: 18298157 DOI: 10.1063/1.2833493] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The polarized and depolarized Raman profiles of supercritical CO(2) have been measured in the region of the nu(2) bending mode (forbidden transition at about 668 cm(-1)) and for the Fermi dyad (1285 and 1388 cm(-1)) along the isotherms 307, 309, 313, and 323 K in a reduced density domain 0.04<rho*=rhorho(C)<2.04 (rho(C) approximately 467.6 kg m(-3), rho(C) is the critical density). The spectral features associated with the nu(2) mode (degeneracy removal of the mode and Raman intensity activation) are found to be due to the formation of transient complexes. This is supported by the spectral signatures predicted for parallel slipped dimer and trimers (cyclic and noncyclic) from ab initio calculations taking into account the frequency anharmonicity. The band-shape analysis of the Fermi doublet (observed in the spectral range of 1260-1400 cm(-1)) shows that on the subpicosecond time scale of the Raman spectroscopy, a tagged CO(2) molecule probed two kinds of environment in its first shell of neighbors independent of local density enhancement phenomenon. The first one involves interactions of CO(2) with surrounding molecules in the first shell whereas the latter is associated with a transient dimer formation. Finally, a broad band observed between the Fermi dyad (at about 1335 cm(-1)) is assessed from symmetry considerations and from its depolarization ratio as a further evidence of transient complex formation in supercritical CO(2).
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Affiliation(s)
- M Isabel Cabaço
- Centro de Física Atómica da UL, Av Prof Gama Pinto 2, Lisboa, Portugal.
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12
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Fujisawa T, Ito T, Terazima M, Kimura Y. Raman Spectroscopic Study of the Solvation of Decafluorobenzophenone Ketyl Radical and Related Compounds in 2-Propanol at Ambient to Supercritical Temperatures. J Phys Chem A 2008; 112:1914-21. [DOI: 10.1021/jp077245j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tomotsumi Fujisawa
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan, and Division of Research Initiative, International Innovation Center, Kyoto University, Kyoto, 606-8501, Japan
| | - Takanori Ito
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan, and Division of Research Initiative, International Innovation Center, Kyoto University, Kyoto, 606-8501, Japan
| | - Masahide Terazima
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan, and Division of Research Initiative, International Innovation Center, Kyoto University, Kyoto, 606-8501, Japan
| | - Yoshifumi Kimura
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan, and Division of Research Initiative, International Innovation Center, Kyoto University, Kyoto, 606-8501, Japan
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Cabaço MI, Longelin S, Danten Y, Besnard M. Local Density Enhancement in Supercritical Carbon Dioxide Studied by Raman Spectroscopy. J Phys Chem A 2007; 111:12966-71. [DOI: 10.1021/jp0756707] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- M. Isabel Cabaço
- Centro de Física Atómica da UL, Av. Prof. Gama Pinto 2, 1694-003 Lisboa Codex and Departamento de Física, Instituto Superior Técnico, UTL, Av. Rovisco Pais 1049-001 Lisboa, Portugal, and Institut des Sciences Moléculaires, CNRS (UMR 5255), Université Bordeaux 1, 351 Cours de la Libération 33405 Talence Cedex, France
| | - S. Longelin
- Centro de Física Atómica da UL, Av. Prof. Gama Pinto 2, 1694-003 Lisboa Codex and Departamento de Física, Instituto Superior Técnico, UTL, Av. Rovisco Pais 1049-001 Lisboa, Portugal, and Institut des Sciences Moléculaires, CNRS (UMR 5255), Université Bordeaux 1, 351 Cours de la Libération 33405 Talence Cedex, France
| | - Y. Danten
- Centro de Física Atómica da UL, Av. Prof. Gama Pinto 2, 1694-003 Lisboa Codex and Departamento de Física, Instituto Superior Técnico, UTL, Av. Rovisco Pais 1049-001 Lisboa, Portugal, and Institut des Sciences Moléculaires, CNRS (UMR 5255), Université Bordeaux 1, 351 Cours de la Libération 33405 Talence Cedex, France
| | - M. Besnard
- Centro de Física Atómica da UL, Av. Prof. Gama Pinto 2, 1694-003 Lisboa Codex and Departamento de Física, Instituto Superior Técnico, UTL, Av. Rovisco Pais 1049-001 Lisboa, Portugal, and Institut des Sciences Moléculaires, CNRS (UMR 5255), Université Bordeaux 1, 351 Cours de la Libération 33405 Talence Cedex, France
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