{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1361137045008416640.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1021/jp034305m"}},{"identifier":{"@type":"URI","@value":"https://pubs.acs.org/doi/pdf/10.1021/jp034305m"}}],"dc:title":[{"@value":"Diffusion of Transient Radicals in Alcohols and Cyclohexane from Ambient to Supercritical Conditions Studied by the Transient Grating Method"}],"description":[{"notation":[{"@value":"The translational diffusion coefficients of ketyl radicals produced by a hydrogen abstraction reaction in ethanol, methanol, and cyclohexane are investigated by the transient grating (TG) method, from liquid phase to the medium-density region in wide temperature ranges. It is found that the diffusion coefficient of the radical (Dr) is smaller than that of a stable molecule with a similar size (Ds) even under supercritical conditions. In the medium-density region, the values of Dr in alcohols are differently dependent on temperature over viscosity from those in cyclohexane. The activation energy of Dr was determined and compared with that of solvent viscosity. We found that Dr/Ds decreases with decreasing density in the medium-density region for cyclohexane. This tendency is explained in terms of the local density enhancement in the medium-density region. In alcohols, the density dependence of Dr/Ds is not significant."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380588379374910338","@type":"Researcher","foaf:name":[{"@value":"T. Ohmori"}],"jpcoar:affiliationName":[{"@value":"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"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137045008416643","@type":"Researcher","foaf:name":[{"@value":"Y. Kimura"}],"jpcoar:affiliationName":[{"@value":"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"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137045008416641","@type":"Researcher","foaf:name":[{"@value":"N. Hirota"}],"jpcoar:affiliationName":[{"@value":"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"}]},{"@id":"https://cir.nii.ac.jp/crid/1381137045008416642","@type":"Researcher","foaf:name":[{"@value":"M. Terazima"}],"jpcoar:affiliationName":[{"@value":"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"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"15206106"},{"@type":"EISSN","@value":"15205207"}],"prism:publicationName":[{"@value":"The Journal of Physical Chemistry B"}],"dc:publisher":[{"@value":"American Chemical Society (ACS)"}],"prism:publicationDate":"2003-05-24","prism:volume":"107","prism:number":"24","prism:startingPage":"5958","prism:endingPage":"5966"},"reviewed":"false","url":[{"@id":"https://pubs.acs.org/doi/pdf/10.1021/jp034305m"}],"createdAt":"2003-06-12","modifiedAt":"2021-09-26","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360285708110036864","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Excited-State Proton Transfer of 5,8-Dicyano-2-naphthol in High-Temperature and High-Pressure Methanol: Effect of Solvent Polarity and Hydrogen Bonding Ability"}]},{"@id":"https://cir.nii.ac.jp/crid/1360588379374910464","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Theory and Experiment of the Soret Forced Rayleigh Scattering Technique for Mass Diffusion Coefficient Measurement of Binary Liquid Mixtures"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001204381718016","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"超臨界流体中における非線形レーザー分光"},{"@language":"en","@value":"Non-linear Laser Spectroscopy in Supercritical Fluids"},{"@language":"ja-Kana","@value":"チョウリンカイ リュウタイ チュウ ニ オケル ヒセンケイ レーザー ブンコウ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282679359309696","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Local Density Effect on the Diffusion of the Reaction Intermediate Radicals"},{"@language":"ja","@value":"超臨界流体の拡散と反応　　反応中間体ラジカルの拡散からみた局所密度効果"},{"@value":"反応中間体ラジカルの拡散からみた局所密度効果"},{"@language":"ja-Kana","@value":"ハンノウ チュウカンタイ ラジカル ノ カクサン カラ ミタ キョクショ ミツド コウカ"}]},{"@id":"https://cir.nii.ac.jp/crid/2051151842062066944","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Study on the translational diffusion of transient species in 1-alkyl-3-methylimidazolium-based ionic liquids by transient grating spectroscopy"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1021/jp034305m"},{"@type":"OPENAIRE","@value":"doi_dedup___::457edde3398c0334351f4cda0ce32b81"},{"@type":"CROSSREF","@value":"10.4131/jshpreview.14.12_references_DOI_DNUbNCmGK9876HKQolEROJbSRJw"},{"@type":"CROSSREF","@value":"10.1021/acs.jpcb.8b09235_references_DOI_DNUbNCmGK9876HKQolEROJbSRJw"},{"@type":"CROSSREF","@value":"10.1246/bcsj.20220099_references_DOI_DNUbNCmGK9876HKQolEROJbSRJw"},{"@type":"CROSSREF","@value":"10.1007/s10765-024-03401-8_references_DOI_DNUbNCmGK9876HKQolEROJbSRJw"},{"@type":"CROSSREF","@value":"10.4131/jshpreview.16.87_references_DOI_DNUbNCmGK9876HKQolEROJbSRJw"}]}