Preferential adsorption of the additive is not a prerequisite for cononsolvency in water-rich mixtures
Cononsolvency of poly(N-isopropylacrylamide) (PNIPAM) gels in binary mixed solvents (water-acetone and water-DMSO) has been comparatively investigated by H HR-MAS NMR spectroscopy. The results demonstrate that, although the addition of both acetone and DMSO gives rise to cononsolvency behavior, PNIP...
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| Veröffentlicht in: | Physical chemistry chemical physics : PCCP 2017, Vol.19 (44), p.30097-30106 |
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| creator | Wang, Jian Wang, Nian Liu, Biaolan Bai, Jia Gong, Pei Ru, Geying Feng, Jiwen |
| description | Cononsolvency of poly(N-isopropylacrylamide) (PNIPAM) gels in binary mixed solvents (water-acetone and water-DMSO) has been comparatively investigated by
H HR-MAS NMR spectroscopy. The results demonstrate that, although the addition of both acetone and DMSO gives rise to cononsolvency behavior, PNIPAM preferentially interacts with acetone rather than DMSO in a water-rich regime, regardless of whether the temperature is above or below the volume phase transition temperature (VPTT). It suggests that the preferential adsorption of the additive cannot be deemed as a prerequisite for the cononsolvency in water-rich mixtures. The underlying molecular mechanism of cononsolvency involves a delicate balance between polymer-solvent and solvent-solvent interactions. Moreover, a new NOE-based NMR approach has been proposed to study the preferential adsorption in this work, which can be extensively adopted to study other relevant processes, including protein hydration, ligand binding, enzyme catalysis, etc. |
| doi_str_mv | 10.1039/c7cp04384h |
| format | Article |
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H HR-MAS NMR spectroscopy. The results demonstrate that, although the addition of both acetone and DMSO gives rise to cononsolvency behavior, PNIPAM preferentially interacts with acetone rather than DMSO in a water-rich regime, regardless of whether the temperature is above or below the volume phase transition temperature (VPTT). It suggests that the preferential adsorption of the additive cannot be deemed as a prerequisite for the cononsolvency in water-rich mixtures. The underlying molecular mechanism of cononsolvency involves a delicate balance between polymer-solvent and solvent-solvent interactions. Moreover, a new NOE-based NMR approach has been proposed to study the preferential adsorption in this work, which can be extensively adopted to study other relevant processes, including protein hydration, ligand binding, enzyme catalysis, etc.</description><identifier>ISSN: 1463-9076</identifier><identifier>EISSN: 1463-9084</identifier><identifier>DOI: 10.1039/c7cp04384h</identifier><identifier>PMID: 29099128</identifier><language>eng</language><publisher>England: Royal Society of Chemistry</publisher><subject>Acetone ; Adsorption ; Catalysis ; Gels ; Isopropylacrylamide ; NMR ; NMR spectroscopy ; Nuclear magnetic resonance ; Phase transitions ; Transition temperature</subject><ispartof>Physical chemistry chemical physics : PCCP, 2017, Vol.19 (44), p.30097-30106</ispartof><rights>Copyright Royal Society of Chemistry 2017</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c393t-e46b39d9b6b67c37e1306cd74477983c1d6c6940fafadeac04dcef2cddfb4e8a3</citedby><cites>FETCH-LOGICAL-c393t-e46b39d9b6b67c37e1306cd74477983c1d6c6940fafadeac04dcef2cddfb4e8a3</cites><orcidid>0000-0002-6545-3663 ; 0000-0002-9691-8574</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,4009,27902,27903,27904</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/29099128$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Wang, Jian</creatorcontrib><creatorcontrib>Wang, Nian</creatorcontrib><creatorcontrib>Liu, Biaolan</creatorcontrib><creatorcontrib>Bai, Jia</creatorcontrib><creatorcontrib>Gong, Pei</creatorcontrib><creatorcontrib>Ru, Geying</creatorcontrib><creatorcontrib>Feng, Jiwen</creatorcontrib><title>Preferential adsorption of the additive is not a prerequisite for cononsolvency in water-rich mixtures</title><title>Physical chemistry chemical physics : PCCP</title><addtitle>Phys Chem Chem Phys</addtitle><description>Cononsolvency of poly(N-isopropylacrylamide) (PNIPAM) gels in binary mixed solvents (water-acetone and water-DMSO) has been comparatively investigated by
H HR-MAS NMR spectroscopy. The results demonstrate that, although the addition of both acetone and DMSO gives rise to cononsolvency behavior, PNIPAM preferentially interacts with acetone rather than DMSO in a water-rich regime, regardless of whether the temperature is above or below the volume phase transition temperature (VPTT). It suggests that the preferential adsorption of the additive cannot be deemed as a prerequisite for the cononsolvency in water-rich mixtures. The underlying molecular mechanism of cononsolvency involves a delicate balance between polymer-solvent and solvent-solvent interactions. Moreover, a new NOE-based NMR approach has been proposed to study the preferential adsorption in this work, which can be extensively adopted to study other relevant processes, including protein hydration, ligand binding, enzyme catalysis, etc.</description><subject>Acetone</subject><subject>Adsorption</subject><subject>Catalysis</subject><subject>Gels</subject><subject>Isopropylacrylamide</subject><subject>NMR</subject><subject>NMR spectroscopy</subject><subject>Nuclear magnetic resonance</subject><subject>Phase transitions</subject><subject>Transition temperature</subject><issn>1463-9076</issn><issn>1463-9084</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNpd0E1LxDAQBuAgit8Xf4AEvIhQTZps2hxl8QsW9KDnkiYTNtJNukm6uv_e6q4ePM0wPLwML0JnlFxTwuSNrnRPOKv5fAcdUi5YIUnNd__2Shygo5TeCSF0Qtk-OiglkZKW9SGyLxEsRPDZqQ4rk0LsswseB4vzHMaLcdmtALuEfchY4T6OfDm45DJgGyLWwQefQrcCr9fYefyhMsQiOj3HC_eZhwjpBO1Z1SU43c5j9HZ_9zp9LGbPD0_T21mhmWS5AC5aJo1sRSsqzSqgjAhtKs6rStZMUyO0kJxYZZUBpQk3GmypjbEth1qxY3S5ye1jWA6QcrNwSUPXKQ9hSA2VggtZCzIZ6cU_-h6G6MfvmpJQUk9KWfNRXW2UjiGlsaumj26h4rqhpPluv5lW05ef9h9HfL6NHNoFmD_6Wzf7Ao0SgdU</recordid><startdate>2017</startdate><enddate>2017</enddate><creator>Wang, Jian</creator><creator>Wang, Nian</creator><creator>Liu, Biaolan</creator><creator>Bai, Jia</creator><creator>Gong, Pei</creator><creator>Ru, Geying</creator><creator>Feng, Jiwen</creator><general>Royal Society of Chemistry</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-6545-3663</orcidid><orcidid>https://orcid.org/0000-0002-9691-8574</orcidid></search><sort><creationdate>2017</creationdate><title>Preferential adsorption of the additive is not a prerequisite for cononsolvency in water-rich mixtures</title><author>Wang, Jian ; Wang, Nian ; Liu, Biaolan ; Bai, Jia ; Gong, Pei ; Ru, Geying ; Feng, Jiwen</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c393t-e46b39d9b6b67c37e1306cd74477983c1d6c6940fafadeac04dcef2cddfb4e8a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Acetone</topic><topic>Adsorption</topic><topic>Catalysis</topic><topic>Gels</topic><topic>Isopropylacrylamide</topic><topic>NMR</topic><topic>NMR spectroscopy</topic><topic>Nuclear magnetic resonance</topic><topic>Phase transitions</topic><topic>Transition temperature</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Jian</creatorcontrib><creatorcontrib>Wang, Nian</creatorcontrib><creatorcontrib>Liu, Biaolan</creatorcontrib><creatorcontrib>Bai, Jia</creatorcontrib><creatorcontrib>Gong, Pei</creatorcontrib><creatorcontrib>Ru, Geying</creatorcontrib><creatorcontrib>Feng, Jiwen</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><jtitle>Physical chemistry chemical physics : PCCP</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Jian</au><au>Wang, Nian</au><au>Liu, Biaolan</au><au>Bai, Jia</au><au>Gong, Pei</au><au>Ru, Geying</au><au>Feng, Jiwen</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Preferential adsorption of the additive is not a prerequisite for cononsolvency in water-rich mixtures</atitle><jtitle>Physical chemistry chemical physics : PCCP</jtitle><addtitle>Phys Chem Chem Phys</addtitle><date>2017</date><risdate>2017</risdate><volume>19</volume><issue>44</issue><spage>30097</spage><epage>30106</epage><pages>30097-30106</pages><issn>1463-9076</issn><eissn>1463-9084</eissn><abstract>Cononsolvency of poly(N-isopropylacrylamide) (PNIPAM) gels in binary mixed solvents (water-acetone and water-DMSO) has been comparatively investigated by
H HR-MAS NMR spectroscopy. The results demonstrate that, although the addition of both acetone and DMSO gives rise to cononsolvency behavior, PNIPAM preferentially interacts with acetone rather than DMSO in a water-rich regime, regardless of whether the temperature is above or below the volume phase transition temperature (VPTT). It suggests that the preferential adsorption of the additive cannot be deemed as a prerequisite for the cononsolvency in water-rich mixtures. The underlying molecular mechanism of cononsolvency involves a delicate balance between polymer-solvent and solvent-solvent interactions. Moreover, a new NOE-based NMR approach has been proposed to study the preferential adsorption in this work, which can be extensively adopted to study other relevant processes, including protein hydration, ligand binding, enzyme catalysis, etc.</abstract><cop>England</cop><pub>Royal Society of Chemistry</pub><pmid>29099128</pmid><doi>10.1039/c7cp04384h</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0002-6545-3663</orcidid><orcidid>https://orcid.org/0000-0002-9691-8574</orcidid></addata></record> |
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| ispartof | Physical chemistry chemical physics : PCCP, 2017, Vol.19 (44), p.30097-30106 |
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| language | eng |
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| source | Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection |
| subjects | Acetone Adsorption Catalysis Gels Isopropylacrylamide NMR NMR spectroscopy Nuclear magnetic resonance Phase transitions Transition temperature |
| title | Preferential adsorption of the additive is not a prerequisite for cononsolvency in water-rich mixtures |
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