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Photo-modulated activation of organic bases enabling microencapsulation and on-demand reactivity

Author

Listed:
  • Wenle Li

    (China University of Petroleum (East China))

  • Xiaocun Lu

    (Clarkson University)

  • Jacob M. Diamond

    (University of Illinois at Urbana-Champaign)

  • Chengtian Shen

    (University of Illinois at Urbana-Champaign)

  • Bo Jiang

    (China University of Petroleum (East China))

  • Shi Sun

    (China University of Petroleum (East China))

  • Jeffrey S. Moore

    (University of Illinois at Urbana-Champaign)

  • Nancy R. Sottos

    (University of Illinois at Urbana-Champaign)

Abstract

A method is developed for facile encapsulation of reactive organic bases with potential application for autonomous damage detection and self-healing polymers. Highly reactive chemicals such as bases and acids are challenging to encapsulate by traditional oil-water emulsion techniques due to unfavorable physical and chemical interactions. In this work, reactivity of the bases is temporarily masked with photo-removable protecting groups, and the resulting inactive payloads are encapsulated via an in situ emulsion-templated interfacial polymerization method. The encapsulated payloads are then activated to restore the organic bases via photo irradiation, either before or after being released from the core-shell carriers. The efficacy of the photo-activated capsules is demonstrated by a damage-triggered, pH-induced color change in polymeric coatings and by recovery of adhesive strength of a damaged interface. Given the wide range of potential photo-deprotection chemistries, this encapsulation scheme provides a simple but powerful method for storage and targeted delivery of a broad variety of reactive chemicals, promoting design of diverse autonomous functionalities in polymeric materials.

Suggested Citation

  • Wenle Li & Xiaocun Lu & Jacob M. Diamond & Chengtian Shen & Bo Jiang & Shi Sun & Jeffrey S. Moore & Nancy R. Sottos, 2024. "Photo-modulated activation of organic bases enabling microencapsulation and on-demand reactivity," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-47175-x
    DOI: 10.1038/s41467-024-47175-x
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    References listed on IDEAS

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    1. John J. Vericella & Sarah E. Baker & Joshuah K. Stolaroff & Eric B. Duoss & James O. Hardin & James Lewicki & Elizabeth Glogowski & William C. Floyd & Carlos A. Valdez & William L. Smith & Joe H. Satc, 2015. "Encapsulated liquid sorbents for carbon dioxide capture," Nature Communications, Nature, vol. 6(1), pages 1-7, May.
    2. Jason F. Patrick & Maxwell J. Robb & Nancy R. Sottos & Jeffrey S. Moore & Scott R. White, 2016. "Polymers with autonomous life-cycle control," Nature, Nature, vol. 540(7633), pages 363-370, December.
    3. Danping Tian & Ruipeng Hao & Xiaoming Zhang & Hu Shi & Yuwei Wang & Linfeng Liang & Haichao Liu & Hengquan Yang, 2023. "Multi-compartmental MOF microreactors derived from Pickering double emulsions for chemo-enzymatic cascade catalysis," Nature Communications, Nature, vol. 14(1), pages 1-14, December.
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