Photocleavable Regenerative Network Materials with Exceptional and Repeatable Viscoelastic Manipulability
Abstract The development of solventless system for modulating properties of network materials is imperative for the next generation sustainable technology. Utilization of photostimulation is important owing to its spatial and temporal locality, yet designing photoresponsive network materials exhibit...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-10-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202101143 |
| _version_ | 1818931960043536384 |
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| author | Minami Oka Hideaki Takagi Tomotaka Miyazawa Robert M. Waymouth Satoshi Honda |
| author_facet | Minami Oka Hideaki Takagi Tomotaka Miyazawa Robert M. Waymouth Satoshi Honda |
| author_sort | Minami Oka |
| collection | DOAJ |
| description | Abstract The development of solventless system for modulating properties of network materials is imperative for the next generation sustainable technology. Utilization of photostimulation is important owing to its spatial and temporal locality, yet designing photoresponsive network materials exhibiting repeatable and dramatic change in their properties remains a challenge. Here, the authors report a photocleavable regenerative network (PRN) linked with photoresponsive hexaarylbiimidazoles (HABIs) synthesized from narrow dispersity star‐shaped poly(dimethylsiloxane)s (PDMSs) having 2,4,5‐triphenylimidazole end groups. The use of urea anion as a catalyst for ring opening polymerization (ROP) of cyclic siloxane initiated from silanols enables control of molecular weight and dispersity. The rheological measurements for the synthesized PRNs exhibit drastic changes in storage and loss moduli (G′ and G″) upon photoirradiation in the solid state (G′ > G″). This photocontrolled change in viscoelasticity with retaining solidity enables application of PRNs as a remotely‐controlled photo‐melt adhesive and photo‐scissible string. The developed PRNs will enable a wide variety of applications such as industrially important next‐generation sustainable adhesive, sealant, and reversibly‐deformable 3D printing materials with their spatially and temporally local manipulability, solventless handleability, and excellent reversibility. |
| first_indexed | 2024-12-20T04:24:53Z |
| format | Article |
| id | doaj.art-50881a4842374c21aca66ea824ad1f00 |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-12-20T04:24:53Z |
| publishDate | 2021-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-50881a4842374c21aca66ea824ad1f002022-12-21T19:53:32ZengWileyAdvanced Science2198-38442021-10-01819n/an/a10.1002/advs.202101143Photocleavable Regenerative Network Materials with Exceptional and Repeatable Viscoelastic ManipulabilityMinami Oka0Hideaki Takagi1Tomotaka Miyazawa2Robert M. Waymouth3Satoshi Honda4Department of Basic Science Graduate School of Arts and Sciences The University of Tokyo 3‐8‐1 Komaba Meguro Tokyo 153‐8902 JapanPhoton Factory Institute of Materials Structure Science High Energy Accelerator Research Organization 1‐1 Oho Tsukuba Ibaraki 305‐0801 JapanDepartment of Materials and Engineering School of Materials and Chemical Technology Tokyo Institute of Technology 2‐12‐1 S8‐7 Ookayama Meguro‐ku Tokyo 152‐8552 JapanDepartment of Chemistry Stanford University Stanford CA 94305 USADepartment of Basic Science Graduate School of Arts and Sciences The University of Tokyo 3‐8‐1 Komaba Meguro Tokyo 153‐8902 JapanAbstract The development of solventless system for modulating properties of network materials is imperative for the next generation sustainable technology. Utilization of photostimulation is important owing to its spatial and temporal locality, yet designing photoresponsive network materials exhibiting repeatable and dramatic change in their properties remains a challenge. Here, the authors report a photocleavable regenerative network (PRN) linked with photoresponsive hexaarylbiimidazoles (HABIs) synthesized from narrow dispersity star‐shaped poly(dimethylsiloxane)s (PDMSs) having 2,4,5‐triphenylimidazole end groups. The use of urea anion as a catalyst for ring opening polymerization (ROP) of cyclic siloxane initiated from silanols enables control of molecular weight and dispersity. The rheological measurements for the synthesized PRNs exhibit drastic changes in storage and loss moduli (G′ and G″) upon photoirradiation in the solid state (G′ > G″). This photocontrolled change in viscoelasticity with retaining solidity enables application of PRNs as a remotely‐controlled photo‐melt adhesive and photo‐scissible string. The developed PRNs will enable a wide variety of applications such as industrially important next‐generation sustainable adhesive, sealant, and reversibly‐deformable 3D printing materials with their spatially and temporally local manipulability, solventless handleability, and excellent reversibility.https://doi.org/10.1002/advs.202101143mechanical propertiesnetwork materialspoly(dimethyl siloxane)ssolventless photocontrol |
| spellingShingle | Minami Oka Hideaki Takagi Tomotaka Miyazawa Robert M. Waymouth Satoshi Honda Photocleavable Regenerative Network Materials with Exceptional and Repeatable Viscoelastic Manipulability Advanced Science mechanical properties network materials poly(dimethyl siloxane)s solventless photocontrol |
| title | Photocleavable Regenerative Network Materials with Exceptional and Repeatable Viscoelastic Manipulability |
| title_full | Photocleavable Regenerative Network Materials with Exceptional and Repeatable Viscoelastic Manipulability |
| title_fullStr | Photocleavable Regenerative Network Materials with Exceptional and Repeatable Viscoelastic Manipulability |
| title_full_unstemmed | Photocleavable Regenerative Network Materials with Exceptional and Repeatable Viscoelastic Manipulability |
| title_short | Photocleavable Regenerative Network Materials with Exceptional and Repeatable Viscoelastic Manipulability |
| title_sort | photocleavable regenerative network materials with exceptional and repeatable viscoelastic manipulability |
| topic | mechanical properties network materials poly(dimethyl siloxane)s solventless photocontrol |
| url | https://doi.org/10.1002/advs.202101143 |
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