Thickness Transition of a Rigid Supramolecular Polymer
A low molecular weight bisurea in nonpolar solvents is shown to self-assemble by hydrogen bonding into two distinct high molecular weight structures. At low temperature and high concentration, the most stable structure is a thick cylindrical assembly, responsible for the very high viscosity of the s...
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| Veröffentlicht in: | Journal of the American Chemical Society 2005-06, Vol.127 (24), p.8893-8898 |
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| container_issue | 24 |
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| container_title | Journal of the American Chemical Society |
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| creator | Bouteiller, Laurent Colombani, Olivier Lortie, Frédéric Terech, Pierre |
| description | A low molecular weight bisurea in nonpolar solvents is shown to self-assemble by hydrogen bonding into two distinct high molecular weight structures. At low temperature and high concentration, the most stable structure is a thick cylindrical assembly, responsible for the very high viscosity of the solution. At higher temperature or lower concentration, the thick filaments disappear in favor of thinner filaments, leading to a lower viscosity. The reversible transition occurs over a temperature range of 5 °C only, showing that it is highly cooperative. The structural switch can also be triggered by changing the nature of the solvent or the composition in the case of a mixture of two bisureas. The high cooperativity and the tunability of this transition are useful for the design of responsive materials. |
| doi_str_mv | 10.1021/ja0511016 |
| format | Article |
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At low temperature and high concentration, the most stable structure is a thick cylindrical assembly, responsible for the very high viscosity of the solution. At higher temperature or lower concentration, the thick filaments disappear in favor of thinner filaments, leading to a lower viscosity. The reversible transition occurs over a temperature range of 5 °C only, showing that it is highly cooperative. The structural switch can also be triggered by changing the nature of the solvent or the composition in the case of a mixture of two bisureas. 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Am. Chem. Soc</addtitle><description>A low molecular weight bisurea in nonpolar solvents is shown to self-assemble by hydrogen bonding into two distinct high molecular weight structures. At low temperature and high concentration, the most stable structure is a thick cylindrical assembly, responsible for the very high viscosity of the solution. At higher temperature or lower concentration, the thick filaments disappear in favor of thinner filaments, leading to a lower viscosity. The reversible transition occurs over a temperature range of 5 °C only, showing that it is highly cooperative. The structural switch can also be triggered by changing the nature of the solvent or the composition in the case of a mixture of two bisureas. The high cooperativity and the tunability of this transition are useful for the design of responsive materials.</description><subject>Applied sciences</subject><subject>Chemical Sciences</subject><subject>Exact sciences and technology</subject><subject>Organic polymers</subject><subject>Physicochemistry of polymers</subject><subject>Polymers</subject><subject>Properties and characterization</subject><subject>Rheology and viscoelasticity</subject><subject>Structure, morphology and analysis</subject><issn>0002-7863</issn><issn>1520-5126</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><recordid>eNptkE9P2zAYhy20CQrbgS8w5bJJHLL5jeN_R4Q2QKo2NrJdrTepDS5J3NkNGt8eV63ay06W7UePfnoIOQf6GWgFX5ZIOQAFcURmwCtacqjEGzKjlFalVIKdkNOUlvlaVwqOyQlwzWup1YyI5tF3T6NNqWgijsmvfRiL4AosfvkHvyjup1XEIfS2m3qMxV3oXwYb35G3Dvtk3-_OM_L729fm6qac_7i-vbqcl8hBrEuXZ2nralSyk7xSbkHrzU7Z0mpBHa2wlWg51C1qbnXNOGgKqrVat7VoHTsjF1vvI_ZmFf2A8cUE9Obmcm42b1mmhazhGTL7acuuYvg72bQ2g0-d7XscbZiSEVIzxqQ6SLsYUorW7c1AzSao2QfN7IeddGoHuziQu4IZ-LgDMHXYuxyx8-nACaWAUZ25csv5tLb_9v8Yn_IwJrlp7u7NH8po81N-N-LgxS6ZZZjimDv_Z-ArP4qVBQ</recordid><startdate>20050622</startdate><enddate>20050622</enddate><creator>Bouteiller, Laurent</creator><creator>Colombani, Olivier</creator><creator>Lortie, Frédéric</creator><creator>Terech, Pierre</creator><general>American Chemical Society</general><scope>BSCLL</scope><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>1XC</scope><scope>VOOES</scope><orcidid>https://orcid.org/0000-0003-4580-497X</orcidid><orcidid>https://orcid.org/0000-0003-2571-3587</orcidid><orcidid>https://orcid.org/0000-0001-7613-7028</orcidid></search><sort><creationdate>20050622</creationdate><title>Thickness Transition of a Rigid Supramolecular Polymer</title><author>Bouteiller, Laurent ; Colombani, Olivier ; Lortie, Frédéric ; Terech, Pierre</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a516t-f5119ef4a87c7528fd0410167b02d0f02ab7ae514ba95e943519018be99b46bf3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Applied sciences</topic><topic>Chemical Sciences</topic><topic>Exact sciences and technology</topic><topic>Organic polymers</topic><topic>Physicochemistry of polymers</topic><topic>Polymers</topic><topic>Properties and characterization</topic><topic>Rheology and viscoelasticity</topic><topic>Structure, morphology and analysis</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bouteiller, Laurent</creatorcontrib><creatorcontrib>Colombani, Olivier</creatorcontrib><creatorcontrib>Lortie, Frédéric</creatorcontrib><creatorcontrib>Terech, Pierre</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>Hyper Article en Ligne (HAL) (Open Access)</collection><jtitle>Journal of the American Chemical Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bouteiller, Laurent</au><au>Colombani, Olivier</au><au>Lortie, Frédéric</au><au>Terech, Pierre</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Thickness Transition of a Rigid Supramolecular Polymer</atitle><jtitle>Journal of the American Chemical Society</jtitle><addtitle>J. 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| source | American Chemical Society Journals |
| subjects | Applied sciences Chemical Sciences Exact sciences and technology Organic polymers Physicochemistry of polymers Polymers Properties and characterization Rheology and viscoelasticity Structure, morphology and analysis |
| title | Thickness Transition of a Rigid Supramolecular Polymer |
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