Photoinduced Exfoliation of a Polymeric N‐Benzylideneaniline Liquid‐Crystalline Composite Based on a Photoisomerization‐Triggered Phase Transition
Hydrogen‐bonded liquid crystalline polymer composites containing N‐benzylideneaniline (NBA) as a photoresponsive mesogenic unit are prepared. The mesomorphic properties of the composite decrease upon exposure to UV light because of trans‐to‐cis photoisomerization, which affects the adhesive properti...
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| Veröffentlicht in: | Macromolecular chemistry and physics 2021-06, Vol.222 (12), p.n/a |
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| container_issue | 12 |
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| container_title | Macromolecular chemistry and physics |
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| creator | Kondo, Mizuho Kojima, Daijoro Ootsuki, Naoya Kawatsuki, Nobuhiro |
| description | Hydrogen‐bonded liquid crystalline polymer composites containing N‐benzylideneaniline (NBA) as a photoresponsive mesogenic unit are prepared. The mesomorphic properties of the composite decrease upon exposure to UV light because of trans‐to‐cis photoisomerization, which affects the adhesive properties and allows facile exfoliation. In addition, the destabilized phase spontaneously reverts to the initial state when UV light irradiation stops. After exfoliation, the composite can be rebonded to a glass substrate by heating above its melting point. This is the first observation of the phase transition of an NBA liquid crystalline polymer.
An isothermal phase transition from a liquid‐crystalline phase to an isotropic phase in response to UV irradiation in a hydrogen‐bonded polymeric N‐benzylideneaniline (NBA) composite, as well as in polymeric NBA, is demonstrated. The hydrogen‐bonded composite can bond glass substrates and support a suspended weight of 106 times their own weight. Furthermore, the adhesive force is reduced on irradiation with UV light. |
| doi_str_mv | 10.1002/macp.202100097 |
| format | Article |
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An isothermal phase transition from a liquid‐crystalline phase to an isotropic phase in response to UV irradiation in a hydrogen‐bonded polymeric N‐benzylideneaniline (NBA) composite, as well as in polymeric NBA, is demonstrated. The hydrogen‐bonded composite can bond glass substrates and support a suspended weight of 106 times their own weight. Furthermore, the adhesive force is reduced on irradiation with UV light.</description><identifier>ISSN: 1022-1352</identifier><identifier>EISSN: 1521-3935</identifier><identifier>DOI: 10.1002/macp.202100097</identifier><language>eng</language><publisher>Weinheim: Wiley Subscription Services, Inc</publisher><subject>adhesion ; Crystal structure ; Crystallinity ; Exfoliation ; Glass substrates ; Light irradiation ; Liquid crystal polymers ; Liquid crystals ; Melting points ; N‐benzylideneaniline ; Phase transitions ; photoinduced phase transition ; Polymer matrix composites ; Ultraviolet radiation</subject><ispartof>Macromolecular chemistry and physics, 2021-06, Vol.222 (12), p.n/a</ispartof><rights>2021 Wiley‐VCH GmbH</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4207-4d89ba4ef9fc3316e219337f45b231fcebdcaf83a6a37aef68a029821343041a3</citedby><cites>FETCH-LOGICAL-c4207-4d89ba4ef9fc3316e219337f45b231fcebdcaf83a6a37aef68a029821343041a3</cites><orcidid>0000-0001-9780-3261</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fmacp.202100097$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fmacp.202100097$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45550,45551</link.rule.ids></links><search><creatorcontrib>Kondo, Mizuho</creatorcontrib><creatorcontrib>Kojima, Daijoro</creatorcontrib><creatorcontrib>Ootsuki, Naoya</creatorcontrib><creatorcontrib>Kawatsuki, Nobuhiro</creatorcontrib><title>Photoinduced Exfoliation of a Polymeric N‐Benzylideneaniline Liquid‐Crystalline Composite Based on a Photoisomerization‐Triggered Phase Transition</title><title>Macromolecular chemistry and physics</title><description>Hydrogen‐bonded liquid crystalline polymer composites containing N‐benzylideneaniline (NBA) as a photoresponsive mesogenic unit are prepared. The mesomorphic properties of the composite decrease upon exposure to UV light because of trans‐to‐cis photoisomerization, which affects the adhesive properties and allows facile exfoliation. In addition, the destabilized phase spontaneously reverts to the initial state when UV light irradiation stops. After exfoliation, the composite can be rebonded to a glass substrate by heating above its melting point. This is the first observation of the phase transition of an NBA liquid crystalline polymer.
An isothermal phase transition from a liquid‐crystalline phase to an isotropic phase in response to UV irradiation in a hydrogen‐bonded polymeric N‐benzylideneaniline (NBA) composite, as well as in polymeric NBA, is demonstrated. The hydrogen‐bonded composite can bond glass substrates and support a suspended weight of 106 times their own weight. Furthermore, the adhesive force is reduced on irradiation with UV light.</description><subject>adhesion</subject><subject>Crystal structure</subject><subject>Crystallinity</subject><subject>Exfoliation</subject><subject>Glass substrates</subject><subject>Light irradiation</subject><subject>Liquid crystal polymers</subject><subject>Liquid crystals</subject><subject>Melting points</subject><subject>N‐benzylideneaniline</subject><subject>Phase transitions</subject><subject>photoinduced phase transition</subject><subject>Polymer matrix composites</subject><subject>Ultraviolet radiation</subject><issn>1022-1352</issn><issn>1521-3935</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNqFkLtOwzAUhiMEEqWwMltiTvEtt7GNuEkFOpQ5chO7dZXEqZ0I0olHYOT5eBJOWwQjky_n-79fOp53SfCIYEyvK5E3I4opPHASHXkDElDis4QFx3DHlPqEBfTUO3NuDUgM0MD7nK1Ma3RddLks0M2bMqUWrTY1MgoJNDNlX0mrc_T09f4xkfW2L3UhaylqXepaoqnedLqAWWp714py_5maqjFOtxJNhAMt2EC1L3Jmp9vuKyA1t3q5lBaY2QpQNLeihiAMz70TJUonL37OofdyezNP7_3p891DOp76Oac48nkRJwvBpUpUzhgJJSUJY5HiwYIyonK5KHKhYiZCwSIhVRgLTJOYEsYZ5kSwoXd18DbWbDrp2mxtOltDZUYDDqqA4xCo0YHKrXHOSpU1VlfC9hnB2W772W772e_2IZAcAq-6lP0_dPY4Tmd_2W9__I-x</recordid><startdate>202106</startdate><enddate>202106</enddate><creator>Kondo, Mizuho</creator><creator>Kojima, Daijoro</creator><creator>Ootsuki, Naoya</creator><creator>Kawatsuki, Nobuhiro</creator><general>Wiley Subscription Services, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0001-9780-3261</orcidid></search><sort><creationdate>202106</creationdate><title>Photoinduced Exfoliation of a Polymeric N‐Benzylideneaniline Liquid‐Crystalline Composite Based on a Photoisomerization‐Triggered Phase Transition</title><author>Kondo, Mizuho ; Kojima, Daijoro ; Ootsuki, Naoya ; Kawatsuki, Nobuhiro</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4207-4d89ba4ef9fc3316e219337f45b231fcebdcaf83a6a37aef68a029821343041a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>adhesion</topic><topic>Crystal structure</topic><topic>Crystallinity</topic><topic>Exfoliation</topic><topic>Glass substrates</topic><topic>Light irradiation</topic><topic>Liquid crystal polymers</topic><topic>Liquid crystals</topic><topic>Melting points</topic><topic>N‐benzylideneaniline</topic><topic>Phase transitions</topic><topic>photoinduced phase transition</topic><topic>Polymer matrix composites</topic><topic>Ultraviolet radiation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kondo, Mizuho</creatorcontrib><creatorcontrib>Kojima, Daijoro</creatorcontrib><creatorcontrib>Ootsuki, Naoya</creatorcontrib><creatorcontrib>Kawatsuki, Nobuhiro</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Macromolecular chemistry and physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kondo, Mizuho</au><au>Kojima, Daijoro</au><au>Ootsuki, Naoya</au><au>Kawatsuki, Nobuhiro</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Photoinduced Exfoliation of a Polymeric N‐Benzylideneaniline Liquid‐Crystalline Composite Based on a Photoisomerization‐Triggered Phase Transition</atitle><jtitle>Macromolecular chemistry and physics</jtitle><date>2021-06</date><risdate>2021</risdate><volume>222</volume><issue>12</issue><epage>n/a</epage><issn>1022-1352</issn><eissn>1521-3935</eissn><abstract>Hydrogen‐bonded liquid crystalline polymer composites containing N‐benzylideneaniline (NBA) as a photoresponsive mesogenic unit are prepared. The mesomorphic properties of the composite decrease upon exposure to UV light because of trans‐to‐cis photoisomerization, which affects the adhesive properties and allows facile exfoliation. In addition, the destabilized phase spontaneously reverts to the initial state when UV light irradiation stops. After exfoliation, the composite can be rebonded to a glass substrate by heating above its melting point. This is the first observation of the phase transition of an NBA liquid crystalline polymer.
An isothermal phase transition from a liquid‐crystalline phase to an isotropic phase in response to UV irradiation in a hydrogen‐bonded polymeric N‐benzylideneaniline (NBA) composite, as well as in polymeric NBA, is demonstrated. The hydrogen‐bonded composite can bond glass substrates and support a suspended weight of 106 times their own weight. Furthermore, the adhesive force is reduced on irradiation with UV light.</abstract><cop>Weinheim</cop><pub>Wiley Subscription Services, Inc</pub><doi>10.1002/macp.202100097</doi><tpages>6</tpages><orcidid>https://orcid.org/0000-0001-9780-3261</orcidid></addata></record> |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | adhesion Crystal structure Crystallinity Exfoliation Glass substrates Light irradiation Liquid crystal polymers Liquid crystals Melting points N‐benzylideneaniline Phase transitions photoinduced phase transition Polymer matrix composites Ultraviolet radiation |
| title | Photoinduced Exfoliation of a Polymeric N‐Benzylideneaniline Liquid‐Crystalline Composite Based on a Photoisomerization‐Triggered Phase Transition |
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