Living Additive Manufacturing: Transformation of Parent Gels into Diversely Functionalized Daughter Gels Made Possible by Visible Light Photoredox Catalysis
Light-initiated additive manufacturing techniques typically rely on layer-by-layer addition or continuous extraction of polymers formed via nonliving, free radical polymerization methods that render the final materials "dead" toward further monomer insertion; the polymer chains within the...
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| Format: | Article |
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American Chemical Society (ACS)
2018
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| Online Access: | http://hdl.handle.net/1721.1/113329 https://orcid.org/0000-0002-7374-8680 https://orcid.org/0000-0002-9604-7764 https://orcid.org/0000-0001-7533-4708 https://orcid.org/0000-0001-9157-6491 |
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| author | Chen, Mao Gu, Yuwei Singh, Awaneesh Zhong, Mingjiang Jordan, Alex M. Biswas, Santidan Korley, LaShanda T. J. Balazs, Anna C. Johnson, Jeremiah A. |
| author2 | Massachusetts Institute of Technology. Department of Chemical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Chemical Engineering Chen, Mao Gu, Yuwei Singh, Awaneesh Zhong, Mingjiang Jordan, Alex M. Biswas, Santidan Korley, LaShanda T. J. Balazs, Anna C. Johnson, Jeremiah A. |
| author_sort | Chen, Mao |
| collection | MIT |
| description | Light-initiated additive manufacturing techniques typically rely on layer-by-layer addition or continuous extraction of polymers formed via nonliving, free radical polymerization methods that render the final materials "dead" toward further monomer insertion; the polymer chains within the materials cannot be reactivated to induce chain extension. An alternative "living additive manufacturing" strategy would involve the use of photocontrolled living radical polymerization to spatiotemporally insert monomers into dormant "parent" materials to generate more complex and diversely functionalized "daughter" materials. Here, we demonstrate a proof-of-concept study of living additive manufacturing using end-linked polymer gels embedded with trithiocarbonate iniferters that can be activated by photoinduced single-electron transfer from an organic photoredox catalyst in solution. This system enables the synthesis of a wide range of chemically and mechanically differentiated daughter gels from a single type of parent gel via light-controlled modification of the parent's average composition, strand length, and/or cross-linking density. Daughter gels that are softer than their parent, stiffer than their parent, larger but with the same modulus as their parent, thermally responsive, polarity responsive, healable, and weldable are all realized. |
| first_indexed | 2024-09-23T12:28:45Z |
| format | Article |
| id | mit-1721.1/113329 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T12:28:45Z |
| publishDate | 2018 |
| publisher | American Chemical Society (ACS) |
| record_format | dspace |
| spelling | mit-1721.1/1133292022-10-01T09:16:58Z Living Additive Manufacturing: Transformation of Parent Gels into Diversely Functionalized Daughter Gels Made Possible by Visible Light Photoredox Catalysis Chen, Mao Gu, Yuwei Singh, Awaneesh Zhong, Mingjiang Jordan, Alex M. Biswas, Santidan Korley, LaShanda T. J. Balazs, Anna C. Johnson, Jeremiah A. Massachusetts Institute of Technology. Department of Chemical Engineering Massachusetts Institute of Technology. Department of Chemistry Chen, Mao Gu, Yuwei Zhong, Mingjiang Johnson, Jeremiah A. Light-initiated additive manufacturing techniques typically rely on layer-by-layer addition or continuous extraction of polymers formed via nonliving, free radical polymerization methods that render the final materials "dead" toward further monomer insertion; the polymer chains within the materials cannot be reactivated to induce chain extension. An alternative "living additive manufacturing" strategy would involve the use of photocontrolled living radical polymerization to spatiotemporally insert monomers into dormant "parent" materials to generate more complex and diversely functionalized "daughter" materials. Here, we demonstrate a proof-of-concept study of living additive manufacturing using end-linked polymer gels embedded with trithiocarbonate iniferters that can be activated by photoinduced single-electron transfer from an organic photoredox catalyst in solution. This system enables the synthesis of a wide range of chemically and mechanically differentiated daughter gels from a single type of parent gel via light-controlled modification of the parent's average composition, strand length, and/or cross-linking density. Daughter gels that are softer than their parent, stiffer than their parent, larger but with the same modulus as their parent, thermally responsive, polarity responsive, healable, and weldable are all realized. National Science Foundation (U.S.) (Grant CHE-1334703) 2018-01-29T18:48:36Z 2018-01-29T18:48:36Z 2017-01 2016-11 2018-01-29T18:25:57Z Article http://purl.org/eprint/type/JournalArticle 2374-7943 2374-7951 http://hdl.handle.net/1721.1/113329 Chen, Mao et al. “Living Additive Manufacturing: Transformation of Parent Gels into Diversely Functionalized Daughter Gels Made Possible by Visible Light Photoredox Catalysis.” ACS Central Science 3, 2 (January 2017): 124–134 © 2017 American Chemical Society https://orcid.org/0000-0002-7374-8680 https://orcid.org/0000-0002-9604-7764 https://orcid.org/0000-0001-7533-4708 https://orcid.org/0000-0001-9157-6491 http://dx.doi.org/10.1021/ACSCENTSCI.6B00335 ACS Central Science Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Chemical Society (ACS) ACS |
| spellingShingle | Chen, Mao Gu, Yuwei Singh, Awaneesh Zhong, Mingjiang Jordan, Alex M. Biswas, Santidan Korley, LaShanda T. J. Balazs, Anna C. Johnson, Jeremiah A. Living Additive Manufacturing: Transformation of Parent Gels into Diversely Functionalized Daughter Gels Made Possible by Visible Light Photoredox Catalysis |
| title | Living Additive Manufacturing: Transformation of Parent Gels into Diversely Functionalized Daughter Gels Made Possible by Visible Light Photoredox Catalysis |
| title_full | Living Additive Manufacturing: Transformation of Parent Gels into Diversely Functionalized Daughter Gels Made Possible by Visible Light Photoredox Catalysis |
| title_fullStr | Living Additive Manufacturing: Transformation of Parent Gels into Diversely Functionalized Daughter Gels Made Possible by Visible Light Photoredox Catalysis |
| title_full_unstemmed | Living Additive Manufacturing: Transformation of Parent Gels into Diversely Functionalized Daughter Gels Made Possible by Visible Light Photoredox Catalysis |
| title_short | Living Additive Manufacturing: Transformation of Parent Gels into Diversely Functionalized Daughter Gels Made Possible by Visible Light Photoredox Catalysis |
| title_sort | living additive manufacturing transformation of parent gels into diversely functionalized daughter gels made possible by visible light photoredox catalysis |
| url | http://hdl.handle.net/1721.1/113329 https://orcid.org/0000-0002-7374-8680 https://orcid.org/0000-0002-9604-7764 https://orcid.org/0000-0001-7533-4708 https://orcid.org/0000-0001-9157-6491 |
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