{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T06:28:14Z","timestamp":1789021694881,"version":"build-2803163510"},"reference-count":56,"publisher":"Wiley","issue":"16","license":[{"start":{"date-parts":[[2025,5,13]],"date-time":"2025-05-13T00:00:00Z","timestamp":1747094400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000923","name":"Australian Research Council","doi-asserted-by":"publisher","award":["DP230102030"],"award-info":[{"award-number":["DP230102030"]}],"id":[{"id":"10.13039\/501100000923","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100008206","name":"Australian Nuclear Science and Technology Organisation","doi-asserted-by":"publisher","award":["P97224"],"award-info":[{"award-number":["P97224"]}],"id":[{"id":"10.13039\/100008206","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100015539","name":"Australian Government","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100015539","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Macromol. Rapid Commun."],"published-print":{"date-parts":[[2025,8]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    In this study, specific ion effects are explored in methanol\u2010water mixtures, which play a critical role in a diverse range of applications, including protein solubilization and supercapacitors. Spectroscopic ellipsometry and neutron reflectometry are employed to investigate the solvent\u2010 and ion\u2010mediated behavior of a poly(\n                    <jats:italic>N<\/jats:italic>\n                    \u2010isopropylacrylamide) (PNIPAM) brush, a well\u2010known thermoresponsive polymer. In the absence of ions and at low methanol mole fractions (\n                    <jats:italic>x<\/jats:italic>\n                    <jats:sub>M<\/jats:sub>\n                    ), PNIPAM displays lower critical solution temperature (LCST) type behavior, with the thermotransition temperature decreasing as\n                    <jats:italic>x<\/jats:italic>\n                    <jats:sub>M<\/jats:sub>\n                    increased. Upon further increasing\n                    <jats:italic>x<\/jats:italic>\n                    <jats:sub>M<\/jats:sub>\n                    , a cononsolvency region is identified at approximately\n                    <jats:italic>x<\/jats:italic>\n                    <jats:sub>M<\/jats:sub>\n                    = 0.15, beyond which re\u2010entrant swelling is observed in conjunction with a suppressed thermoresponse. In the presence of\n                    <jats:italic>x<\/jats:italic>\n                    <jats:sub>M<\/jats:sub>\n                    = 0.10 electrolytes, the observed specific ion effects adhere to a\n                    <jats:italic>forward<\/jats:italic>\n                    Hofmeister series. Strongly solvated ions, such as Cl\n                    <jats:sup>\u2013<\/jats:sup>\n                    and Br\n                    <jats:sup>\u2013<\/jats:sup>\n                    , decrease the LCST of the brush. In contrast, poorly solvated ions, such as SCN\n                    <jats:sup>\u2013<\/jats:sup>\n                    and I\n                    <jats:sup>\u2013<\/jats:sup>\n                    , lead to more swollen brush profiles and an increase in the LCST. We hypothesize that the stability of water\u2010methanol clusters plays a crucial role in governing polymer solvation, providing insights into the fundamental interactions within mixed solvent systems. Moreover, a theoretical ion that does not impact the swelling or structure of a PNIPAM brush is proposed.\n                  <\/jats:p>","DOI":"10.1002\/marc.202500093","type":"journal-article","created":{"date-parts":[[2025,5,27]],"date-time":"2025-05-27T08:21:54Z","timestamp":1748334114000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Solvent and Ion\u2010Mediated Behavior of a Thermoresponsive Brush: Specific Ion Effects in Methanol\u2010Water Electrolytes"],"prefix":"10.1002","volume":"46","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0653-1390","authenticated-orcid":false,"given":"Hayden","family":"Robertson","sequence":"first","affiliation":[{"name":"Soft Matter at Interfaces, Institute for Condensed Matter Physics Technical University of Darmstadt  D\u201064289 Darmstadt Germany"},{"name":"College of Science Engineering and Environment University of Newcastle  Callaghan NSW 2308 Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1870-755X","authenticated-orcid":false,"given":"Joshua D.","family":"Willott","sequence":"additional","affiliation":[{"name":"College of Science Engineering and Environment University of Newcastle  Callaghan NSW 2308 Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4548-3558","authenticated-orcid":false,"given":"Andrew R.J.","family":"Nelson","sequence":"additional","affiliation":[{"name":"Australian Centre for Neutron Scattering ANSTO  Locked bag 2001 Kirrawee DC NSW 2232 Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5639-9688","authenticated-orcid":false,"given":"Stuart W.","family":"Prescott","sequence":"additional","affiliation":[{"name":"School of Chemical Engineering UNSW Sydney  Sydney NSW 2052 Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0869-4396","authenticated-orcid":false,"given":"Erica J.","family":"Wanless","sequence":"additional","affiliation":[{"name":"College of Science Engineering and Environment University of Newcastle  Callaghan NSW 2308 Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8303-6081","authenticated-orcid":false,"given":"Grant, B.","family":"Webber","sequence":"additional","affiliation":[{"name":"College of Science Engineering and Environment University of Newcastle  Callaghan NSW 2308 Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,5,13]]},"reference":[{"key":"e_1_2_8_1_1","doi-asserted-by":"publisher","DOI":"10.1039\/c2ra20451g"},{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1007\/s13758-011-0009-3"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1039\/c3cs60023h"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1039\/C6PY01585A"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1021\/la061526l"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/anie.201506663"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1002\/adfm.202402432"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00396-020-04750-0"},{"key":"e_1_2_8_9_1","first-page":"3","volume":"10","author":"Hu N.","year":"2023","journal-title":"Adv. Mater. Interfaces"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cocis.2004.05.005"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF01918191"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.1039\/D2CP00847E"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41557-021-00805-z"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.1039\/D4RA04360J"},{"key":"e_1_2_8_15_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsmacrolett.4c00426"},{"key":"e_1_2_8_16_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcis.2022.09.101"},{"key":"e_1_2_8_17_1","doi-asserted-by":"publisher","DOI":"10.1002\/cphc.201200120"},{"key":"e_1_2_8_18_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.langmuir.4c03675"},{"key":"e_1_2_8_19_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.energyfuels.4c00423"},{"key":"e_1_2_8_20_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsomega.0c00237"},{"key":"e_1_2_8_21_1","doi-asserted-by":"publisher","DOI":"10.1063\/1.5017278"},{"key":"e_1_2_8_22_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.langmuir.3c02596"},{"key":"e_1_2_8_23_1","doi-asserted-by":"publisher","DOI":"10.1039\/D1SC03568A"},{"key":"e_1_2_8_24_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcis.2022.12.114"},{"key":"e_1_2_8_25_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja0546424"},{"key":"e_1_2_8_26_1","doi-asserted-by":"publisher","DOI":"10.1021\/la047326w"},{"key":"e_1_2_8_27_1","doi-asserted-by":"publisher","DOI":"10.1038\/ncomms5882"},{"key":"e_1_2_8_28_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.jpcb.5b10684"},{"key":"e_1_2_8_29_1","doi-asserted-by":"publisher","DOI":"10.1021\/ma00210a048"},{"key":"e_1_2_8_30_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.jpcb.6b01200"},{"key":"e_1_2_8_31_1","doi-asserted-by":"publisher","DOI":"10.1021\/ja003889s"},{"key":"e_1_2_8_32_1","doi-asserted-by":"publisher","DOI":"10.1021\/acs.jpcb.2c04638"},{"key":"e_1_2_8_33_1","doi-asserted-by":"publisher","DOI":"10.1039\/D0SM01007C"},{"key":"e_1_2_8_34_1","doi-asserted-by":"publisher","DOI":"10.1021\/jp100743k"},{"key":"e_1_2_8_35_1","doi-asserted-by":"publisher","DOI":"10.1021\/acsmacrolett.7b00557"},{"key":"e_1_2_8_36_1","doi-asserted-by":"publisher","DOI":"10.1021\/ma1016693"},{"key":"e_1_2_8_37_1","doi-asserted-by":"publisher","DOI":"10.1021\/jp4091602"},{"key":"e_1_2_8_38_1","doi-asserted-by":"publisher","DOI":"10.1039\/D2PY01487D"},{"key":"e_1_2_8_39_1","doi-asserted-by":"publisher","DOI":"10.1021\/jp212357n"},{"key":"e_1_2_8_40_1","doi-asserted-by":"publisher","DOI":"10.1039\/C6SM01789D"},{"key":"e_1_2_8_41_1","doi-asserted-by":"publisher","DOI":"10.1021\/la400035e"},{"key":"e_1_2_8_42_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0032-3861(02)00507-4"},{"key":"e_1_2_8_43_1","doi-asserted-by":"publisher","DOI":"10.1021\/ma00004a022"},{"key":"e_1_2_8_44_1","doi-asserted-by":"publisher","DOI":"10.1002\/polb.23194"},{"key":"e_1_2_8_45_1","first-page":"1","volume":"101","author":"Tanaka F.","year":"2008","journal-title":"Phys. Rev. Lett."},{"key":"e_1_2_8_46_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cis.2024.103238"},{"key":"e_1_2_8_47_1","doi-asserted-by":"publisher","DOI":"10.1107\/S160057672100251X"},{"key":"e_1_2_8_48_1","doi-asserted-by":"publisher","DOI":"10.1021\/la902285t"},{"key":"e_1_2_8_49_1","doi-asserted-by":"publisher","DOI":"10.1021\/la203979d"},{"key":"e_1_2_8_50_1","doi-asserted-by":"publisher","DOI":"10.1039\/C5CP07468A"},{"key":"e_1_2_8_51_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcis.2020.10.092"},{"key":"e_1_2_8_52_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.softx.2022.101225"},{"key":"e_1_2_8_53_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.nima.2010.12.075"},{"key":"e_1_2_8_54_1","doi-asserted-by":"publisher","DOI":"10.1107\/S1600576718017296"},{"key":"e_1_2_8_55_1","doi-asserted-by":"publisher","DOI":"10.1039\/D3CP02206D"},{"key":"e_1_2_8_56_1","unstructured":"H.Robertson J. D.Willott A. R. J.Nelson S. W.Prescott E. J.Wanless G. B.Webber 2024 https:\/\/doi.org\/10.5281\/zenodo.14338739"}],"container-title":["Macromolecular Rapid Communications"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/marc.202500093","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/marc.202500093","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,12,5]],"date-time":"2025-12-05T14:43:59Z","timestamp":1764945839000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/marc.202500093"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,5,13]]},"references-count":56,"journal-issue":{"issue":"16","published-print":{"date-parts":[[2025,8]]}},"alternative-id":["10.1002\/marc.202500093"],"URL":"https:\/\/doi.org\/10.1002\/marc.202500093","archive":["Portico"],"relation":{},"ISSN":["1022-1336","1521-3927"],"issn-type":[{"value":"1022-1336","type":"print"},{"value":"1521-3927","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,5,13]]},"assertion":[{"value":"2025-01-23","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-05-13","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"2500093"}}