{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,29]],"date-time":"2025-09-29T03:57:57Z","timestamp":1759118277208,"version":"3.41.2"},"reference-count":43,"publisher":"AIP Publishing","issue":"19","funder":[{"name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","award":["IF\/00402\/2015, IF\/00355\/2012 and IF\/00758\/2015"],"award-info":[{"award-number":["IF\/00402\/2015, IF\/00355\/2012 and IF\/00758\/2015"]}]},{"name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","award":["UID\/CTM\/50011\/2013"],"award-info":[{"award-number":["UID\/CTM\/50011\/2013"]}]},{"name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","award":["UID\/QUI\/50006\/2013"],"award-info":[{"award-number":["UID\/QUI\/50006\/2013"]}]},{"DOI":"10.13039\/501100002322","name":"Coordena\u00e7\u00e3o de Aperfei\u00e7oamento de Pessoal de N\u00edvel Superior","doi-asserted-by":"publisher","award":["202337\/2015-4"],"award-info":[{"award-number":["202337\/2015-4"]}],"id":[{"id":"10.13039\/501100002322","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100010663","name":"H2020 European Research Council","doi-asserted-by":"publisher","award":["337753"],"award-info":[{"award-number":["337753"]}],"id":[{"id":"10.13039\/100010663","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2018,5,21]]},"abstract":"<jats:p>This work provides a comprehensive evaluation of the effect of the cation alkyl side chain length of the 1-alkyl-3-methylimidazolium chloride series ([CnC1im]Cl, n = 2-14) of ionic liquids (ILs) on their capability to form aqueous biphasic systems (ABSs) with salts and self-aggregation derived properties. The liquid-liquid phase behavior of ternary systems composed of [CnC1im]Cl, water, and K3PO4 or K2CO3 and the respective Setschenow salting-out coefficients (ks), a quantitative measure of the two-phase formation ability, were determined. An odd-even effect in the ks values along the number of methylene groups of the longest IL cation alkyl side chain was identified for the ABS formed by K2CO3, a weaker salting-out agent where the phenomenon is clearly identified. In general, cations with even alkyl side chains, being likely to display higher molar volumes, are more easily salted-out and thus more prone to undergo phase separation. The odd-even effect in the ks values is, however, more significant in ILs up to n = 6, where the nanostructuration\/nanosegregation of ILs plays a less relevant role. Still, with the [CnC1im]Cl (n = 7-14) series of ILs, an odd-even effect was also identified in the ILs\u2019 ionization degree, molar conductivity, and conductivity at infinite dilution. In summary, it is shown here that the ILs\u2019 odd-even effect occurs in IL aqueous solutions and not just in neat ILs, an already well-established phenomenon occurring in a series of ILs\u2019 properties described as a result of the orientation of the terminal methyl groups to the imidazolium ring cation and consequent effect in the ILs\u2019 cohesive energy.<\/jats:p>","DOI":"10.1063\/1.5012020","type":"journal-article","created":{"date-parts":[[2018,4,10]],"date-time":"2018-04-10T15:59:28Z","timestamp":1523375968000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":16,"title":["Odd-even effect on the formation of aqueous biphasic systems formed by 1-alkyl-3-methylimidazolium chloride ionic liquids and salts"],"prefix":"10.1063","volume":"148","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1982-3491","authenticated-orcid":false,"given":"Diana C. 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