New Photoresponsive Poly(meth)acrylates Bearing Azobenzene Moieties Obtained via ATRP Polymerization Exhibiting Liquid-Crystalline Behavior
Here, we report our studies on photoresponsive poly(meth)acrylates containing azobenzene groups connected to a polymer backbone via a short methylene linker. A series of side-chain azobenzene polymers was synthesized via the atom transfer radical polymerization (ATRP) technique using several catalyt...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-06-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/13/13/2172 |
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| author | Piotr Cieciórski Paweł W. Majewski Elżbieta Megiel |
| author_facet | Piotr Cieciórski Paweł W. Majewski Elżbieta Megiel |
| author_sort | Piotr Cieciórski |
| collection | DOAJ |
| description | Here, we report our studies on photoresponsive poly(meth)acrylates containing azobenzene groups connected to a polymer backbone via a short methylene linker. A series of side-chain azobenzene polymers was synthesized via the atom transfer radical polymerization (ATRP) technique using several catalytic systems. The polymers synthesized under the optimized conditions were characterized by a narrow polydispersity (<i>Đ</i> ≤ 1.35), and they underwent a reversible transformation of their structure under light illumination. The fabricated polymers can store and release energy accumulated during the UV-light illumination by the thermal cis-trans isomerization of the chromophore groups. The enthalpy of the process (determined from DSC) was relatively high and equaled 61.9 J∙g<sup>−1</sup> (17 Wh∙kg<sup>−1</sup>), indicating a high potential of these materials in energy storage applications. The liquid-crystalline behavior of the synthesized poly(meth)acrylates was demonstrated by the birefringent optical textures as observed in thin-films and X-ray scattering studies. |
| first_indexed | 2024-03-10T09:55:25Z |
| format | Article |
| id | doaj.art-1bedc36bd99548ceb0a1f3be245bdf2a |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T09:55:25Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-1bedc36bd99548ceb0a1f3be245bdf2a2023-11-22T02:23:45ZengMDPI AGPolymers2073-43602021-06-011313217210.3390/polym13132172New Photoresponsive Poly(meth)acrylates Bearing Azobenzene Moieties Obtained via ATRP Polymerization Exhibiting Liquid-Crystalline BehaviorPiotr Cieciórski0Paweł W. Majewski1Elżbieta Megiel2Faculty of Chemistry, University of Warsaw, Pasteura 1 Str., 02-093 Warsaw, PolandFaculty of Chemistry, University of Warsaw, Pasteura 1 Str., 02-093 Warsaw, PolandFaculty of Chemistry, University of Warsaw, Pasteura 1 Str., 02-093 Warsaw, PolandHere, we report our studies on photoresponsive poly(meth)acrylates containing azobenzene groups connected to a polymer backbone via a short methylene linker. A series of side-chain azobenzene polymers was synthesized via the atom transfer radical polymerization (ATRP) technique using several catalytic systems. The polymers synthesized under the optimized conditions were characterized by a narrow polydispersity (<i>Đ</i> ≤ 1.35), and they underwent a reversible transformation of their structure under light illumination. The fabricated polymers can store and release energy accumulated during the UV-light illumination by the thermal cis-trans isomerization of the chromophore groups. The enthalpy of the process (determined from DSC) was relatively high and equaled 61.9 J∙g<sup>−1</sup> (17 Wh∙kg<sup>−1</sup>), indicating a high potential of these materials in energy storage applications. The liquid-crystalline behavior of the synthesized poly(meth)acrylates was demonstrated by the birefringent optical textures as observed in thin-films and X-ray scattering studies.https://www.mdpi.com/2073-4360/13/13/2172photoresponsivitymolecular switchazobenzeneliquid crystalscontrolled radical polymerizationATRP |
| spellingShingle | Piotr Cieciórski Paweł W. Majewski Elżbieta Megiel New Photoresponsive Poly(meth)acrylates Bearing Azobenzene Moieties Obtained via ATRP Polymerization Exhibiting Liquid-Crystalline Behavior Polymers photoresponsivity molecular switch azobenzene liquid crystals controlled radical polymerization ATRP |
| title | New Photoresponsive Poly(meth)acrylates Bearing Azobenzene Moieties Obtained via ATRP Polymerization Exhibiting Liquid-Crystalline Behavior |
| title_full | New Photoresponsive Poly(meth)acrylates Bearing Azobenzene Moieties Obtained via ATRP Polymerization Exhibiting Liquid-Crystalline Behavior |
| title_fullStr | New Photoresponsive Poly(meth)acrylates Bearing Azobenzene Moieties Obtained via ATRP Polymerization Exhibiting Liquid-Crystalline Behavior |
| title_full_unstemmed | New Photoresponsive Poly(meth)acrylates Bearing Azobenzene Moieties Obtained via ATRP Polymerization Exhibiting Liquid-Crystalline Behavior |
| title_short | New Photoresponsive Poly(meth)acrylates Bearing Azobenzene Moieties Obtained via ATRP Polymerization Exhibiting Liquid-Crystalline Behavior |
| title_sort | new photoresponsive poly meth acrylates bearing azobenzene moieties obtained via atrp polymerization exhibiting liquid crystalline behavior |
| topic | photoresponsivity molecular switch azobenzene liquid crystals controlled radical polymerization ATRP |
| url | https://www.mdpi.com/2073-4360/13/13/2172 |
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