Study on the Translational Diffusion of Transient Species in 1-Alkyl-3-methylimidazolium-Based Ionic Liquids by Transient Grating Spectroscopy
Translational diffusion coefficients of two transient species in 1-alkyl-3-methylimidazolium-based ionic liquids (Cnmim+) with different alkyl chain lengths (n = 4, 8, 12) and the bis(trifluoromethanesulfonyl)imide anion were measured by transient grating spectroscopy. The systems of interest are th...
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| Veröffentlicht in: | Bulletin of the Chemical Society of Japan 2022-08, Vol.95 (8), p.1220-1227 |
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| container_title | Bulletin of the Chemical Society of Japan |
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| creator | Nakajima, Satoshi Sumida, Hiroki Endo, Takatsugu Kimura, Yoshifumi |
| description | Translational diffusion coefficients of two transient species in 1-alkyl-3-methylimidazolium-based ionic liquids (Cnmim+) with different alkyl chain lengths (n = 4, 8, 12) and the bis(trifluoromethanesulfonyl)imide anion were measured by transient grating spectroscopy. The systems of interest are the benzophenone ketyl radical (BPK) produced by the hydrogen-abstraction reaction of benzophenone (BP) and the zwitterionic merocyanine dye (MC) produced by the photoisomerization of 1,3,3-trimethylindolino-6′-nitrobenzopyrylospiran (SP). The diffusion coefficients of BPK and MC closely obey the Stokes-Einstein (SE) relation in the ionic liquids regardless of the alkyl chain lengths of the cations, whereas the diffusion coefficients of BP are larger than those predicted by the SE equation. The temperature dependences of the translational diffusion coefficients of BP, BPK, and MC reveal that the diffusional activation energies of BPK and MC are larger than those of BP in all solvents. The origin of this difference is discussed in terms of intermolecular interactions within the ionic-liquid solvents. |
| doi_str_mv | 10.1246/bcsj.20220099 |
| format | Article |
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The systems of interest are the benzophenone ketyl radical (BPK) produced by the hydrogen-abstraction reaction of benzophenone (BP) and the zwitterionic merocyanine dye (MC) produced by the photoisomerization of 1,3,3-trimethylindolino-6′-nitrobenzopyrylospiran (SP). The diffusion coefficients of BPK and MC closely obey the Stokes-Einstein (SE) relation in the ionic liquids regardless of the alkyl chain lengths of the cations, whereas the diffusion coefficients of BP are larger than those predicted by the SE equation. The temperature dependences of the translational diffusion coefficients of BP, BPK, and MC reveal that the diffusional activation energies of BPK and MC are larger than those of BP in all solvents. The origin of this difference is discussed in terms of intermolecular interactions within the ionic-liquid solvents.</description><identifier>ISSN: 0009-2673</identifier><identifier>EISSN: 1348-0634</identifier><identifier>DOI: 10.1246/bcsj.20220099</identifier><language>eng</language><publisher>Tokyo: The Chemical Society of Japan</publisher><subject>Chains ; Coefficients ; Diffusion rate ; Ionic liquids ; Ions ; Solvents ; Species diffusion ; Spectrum analysis ; Spiropyrans ; Zwitterions</subject><ispartof>Bulletin of the Chemical Society of Japan, 2022-08, Vol.95 (8), p.1220-1227</ispartof><rights>The Chemical Society of Japan</rights><rights>Copyright Chemical Society of Japan 2022</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c393t-84ff699d734b12a7535210906a121877ff88fec8eb6de6fbf6ee2920d5336a413</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27903,27904</link.rule.ids></links><search><creatorcontrib>Nakajima, Satoshi</creatorcontrib><creatorcontrib>Sumida, Hiroki</creatorcontrib><creatorcontrib>Endo, Takatsugu</creatorcontrib><creatorcontrib>Kimura, Yoshifumi</creatorcontrib><title>Study on the Translational Diffusion of Transient Species in 1-Alkyl-3-methylimidazolium-Based Ionic Liquids by Transient Grating Spectroscopy</title><title>Bulletin of the Chemical Society of Japan</title><description>Translational diffusion coefficients of two transient species in 1-alkyl-3-methylimidazolium-based ionic liquids (Cnmim+) with different alkyl chain lengths (n = 4, 8, 12) and the bis(trifluoromethanesulfonyl)imide anion were measured by transient grating spectroscopy. The systems of interest are the benzophenone ketyl radical (BPK) produced by the hydrogen-abstraction reaction of benzophenone (BP) and the zwitterionic merocyanine dye (MC) produced by the photoisomerization of 1,3,3-trimethylindolino-6′-nitrobenzopyrylospiran (SP). The diffusion coefficients of BPK and MC closely obey the Stokes-Einstein (SE) relation in the ionic liquids regardless of the alkyl chain lengths of the cations, whereas the diffusion coefficients of BP are larger than those predicted by the SE equation. The temperature dependences of the translational diffusion coefficients of BP, BPK, and MC reveal that the diffusional activation energies of BPK and MC are larger than those of BP in all solvents. The origin of this difference is discussed in terms of intermolecular interactions within the ionic-liquid solvents.</description><subject>Chains</subject><subject>Coefficients</subject><subject>Diffusion rate</subject><subject>Ionic liquids</subject><subject>Ions</subject><subject>Solvents</subject><subject>Species diffusion</subject><subject>Spectrum analysis</subject><subject>Spiropyrans</subject><subject>Zwitterions</subject><issn>0009-2673</issn><issn>1348-0634</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNptkD1PwzAQhi0EEqUwsltidvFH4sRspUCpVImhZY6cxKYuSZzGzhB-BL8ZlxbBwOTz3XvP3b0AXBM8ITTit3nhthOKKcVYiBMwIixKEeYsOgUjHHKI8oSdgwvntuGbxpEYgc-V78sB2gb6jYLrTjaukt7YRlbwwWjduxBDqw8loxoPV60qjHLQNJCgafU-VIihWvnNUJnalPLDVqav0b10qoQL25gCLs2uN6WD-fCHM-_CoObtm-c76wrbDpfgTMvKqavjOwavT4_r2TNavswXs-kSFUwwj9JIay5EmbAoJ1QmMYspwQJzSShJk0TrNNWqSFXOS8V1rrlSVFBcxoxxGRE2BjcHbtvZXa-cz7a278LRLqNJAKUJoUlQoYOqCOu5Tums7UwtuyEjONtbnu0tz34sD_q7o36jalMEmg1O-WErW9n8Tvi_-QvfzoqS</recordid><startdate>20220815</startdate><enddate>20220815</enddate><creator>Nakajima, Satoshi</creator><creator>Sumida, Hiroki</creator><creator>Endo, Takatsugu</creator><creator>Kimura, Yoshifumi</creator><general>The Chemical Society of Japan</general><general>Chemical Society of Japan</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20220815</creationdate><title>Study on the Translational Diffusion of Transient Species in 1-Alkyl-3-methylimidazolium-Based Ionic Liquids by Transient Grating Spectroscopy</title><author>Nakajima, Satoshi ; Sumida, Hiroki ; Endo, Takatsugu ; Kimura, Yoshifumi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c393t-84ff699d734b12a7535210906a121877ff88fec8eb6de6fbf6ee2920d5336a413</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Chains</topic><topic>Coefficients</topic><topic>Diffusion rate</topic><topic>Ionic liquids</topic><topic>Ions</topic><topic>Solvents</topic><topic>Species diffusion</topic><topic>Spectrum analysis</topic><topic>Spiropyrans</topic><topic>Zwitterions</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nakajima, Satoshi</creatorcontrib><creatorcontrib>Sumida, Hiroki</creatorcontrib><creatorcontrib>Endo, Takatsugu</creatorcontrib><creatorcontrib>Kimura, Yoshifumi</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Bulletin of the Chemical Society of Japan</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nakajima, Satoshi</au><au>Sumida, Hiroki</au><au>Endo, Takatsugu</au><au>Kimura, Yoshifumi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Study on the Translational Diffusion of Transient Species in 1-Alkyl-3-methylimidazolium-Based Ionic Liquids by Transient Grating Spectroscopy</atitle><jtitle>Bulletin of the Chemical Society of Japan</jtitle><date>2022-08-15</date><risdate>2022</risdate><volume>95</volume><issue>8</issue><spage>1220</spage><epage>1227</epage><pages>1220-1227</pages><issn>0009-2673</issn><eissn>1348-0634</eissn><abstract>Translational diffusion coefficients of two transient species in 1-alkyl-3-methylimidazolium-based ionic liquids (Cnmim+) with different alkyl chain lengths (n = 4, 8, 12) and the bis(trifluoromethanesulfonyl)imide anion were measured by transient grating spectroscopy. The systems of interest are the benzophenone ketyl radical (BPK) produced by the hydrogen-abstraction reaction of benzophenone (BP) and the zwitterionic merocyanine dye (MC) produced by the photoisomerization of 1,3,3-trimethylindolino-6′-nitrobenzopyrylospiran (SP). The diffusion coefficients of BPK and MC closely obey the Stokes-Einstein (SE) relation in the ionic liquids regardless of the alkyl chain lengths of the cations, whereas the diffusion coefficients of BP are larger than those predicted by the SE equation. The temperature dependences of the translational diffusion coefficients of BP, BPK, and MC reveal that the diffusional activation energies of BPK and MC are larger than those of BP in all solvents. The origin of this difference is discussed in terms of intermolecular interactions within the ionic-liquid solvents.</abstract><cop>Tokyo</cop><pub>The Chemical Society of Japan</pub><doi>10.1246/bcsj.20220099</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| language | eng |
| recordid | cdi_proquest_journals_2709087127 |
| source | Oxford University Press Journals All Titles (1996-Current) |
| subjects | Chains Coefficients Diffusion rate Ionic liquids Ions Solvents Species diffusion Spectrum analysis Spiropyrans Zwitterions |
| title | Study on the Translational Diffusion of Transient Species in 1-Alkyl-3-methylimidazolium-Based Ionic Liquids by Transient Grating Spectroscopy |
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