3D printing of reactive macroporous polymers <i>via</i> thiol–ene chemistry and polymerization-induced phase separation

Mandsberg, Nikolaj K.; Aslan, Fatma; Dong, Zheqin; Levkin, Pavel A.

doi:10.1039/d4cc00466c

Chem. Commun.

2024

DOI: 10.1039/d4cc00466c

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3D printing of reactive macroporous polymers via thiol–ene chemistry and polymerization-induced phase separation

Nikolaj K. Mandsberg,

Fatma Aslan,

Zheqin Dong

et al.

Abstract: Using thiol–ene chemistry, polymerization-induced phase separation, and DLP 3D printing, we present a method for manufacturing reactive macroporous 3D structures.

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Cited by 2 publications

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“…Light-induced radical polymerizations have dominated over ionic ones because of their lower photoinitiator cost, excellent temporal control, and faster, application-relevant, reaction speeds (completion in <60 s). However, radical-based photopolymerizations are majorly limited in scope to acrylics and, more recently, thiol–ene reactions. − …”

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confidence: 99%

Onium Photocages for Visible-Light-Activated Poly(thiourethane) Synthesis and 3D Printing

Kiker,

Uddin,

Stevens

et al. 2024

J. Am. Chem. Soc.

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The lack of chemical diversity in light-driven reactions for 3D printing poses challenges in the production of structures with long-term ambient stability, recyclability, and breadth in properties (mechanical, optical, etc.). Herein we expand the scope of photochemistries compatible with 3D printing by introducing onium photocages for the rapid formation of poly(thiourethanes) (PTUs). Efficient nonsensitized visible-light photolysis releases organophosphine and -amine derivatives that catalyze thiol−isocyanate polyaddition reactions with excellent temporal control. Two resin formulations comprising commercial isocyanates and thiols were developed for digital light processing (DLP) 3D printing to showcase the fast production of highresolution PTU objects with disparate mechanical properties. Onium photocages represent valuable tools to advance light-driven manufacturing of next-generation high-performance sustainable materials.

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mentioning

confidence: 99%

Onium Photocages for Visible-Light-Activated Poly(thiourethane) Synthesis and 3D Printing

Kiker,

Uddin,

Stevens

et al. 2024

J. Am. Chem. Soc.

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CART: Carrier‐Based Actuatable and Reprogrammable Transport

Mandsberg,

Serna,

Levkin

2024

Adv Funct Materials

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Remote manipulation of microcargo is essential for miniaturized automated experiments in fields such as biology, chemistry, and diagnostics, allowing efficient use of scarce, expensive, or hazardous materials. Current methods for manipulating microcargo are generally limited to droplets as cargo and rely on reduced substrate‐cargo friction and special substrate‐cargo interactions (electrowetting, anisotropic wetting, water‐repellency, etc.) to enable cargo mobility. This limits the versatility of substrate and cargo choice. Here, CART (Carrier‐based Actuatable and Reprogrammable Transport) is presented as a solution to these challenges. By introducing a carrier between the substrate and the cargo, CART physically separates them, eliminating the need to reduce substrate‐cargo friction and the need for substrate‐cargo matching. CART devices are easy to realize, tailor, and post‐functionalize. A photo‐polymerizable phase‐separating resin is used to 3D‐print porous carriers that are then infused with ferrofluid to make them magnetically responsive, enabling untethered cargo manipulation on both solid and liquid substrates. Using CART, various cargos can be remotely moved, rotated/mixed, inverted, and lifted, further facilitating interaction between two carriers for transferring, merging, and tunably splitting cargo. Overall, CART advances microcargo manipulation by decoupling cargo from the substrate and leveraging magnetic responsiveness for untethered, versatile control across different environments, opening up new actuation‐modalities.

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3D printing of reactive macroporous polymers via thiol–ene chemistry and polymerization-induced phase separation

Abstract: Using thiol–ene chemistry, polymerization-induced phase separation, and DLP 3D printing, we present a method for manufacturing reactive macroporous 3D structures.

Cited by 2 publications

References 31 publications

Onium Photocages for Visible-Light-Activated Poly(thiourethane) Synthesis and 3D Printing

Onium Photocages for Visible-Light-Activated Poly(thiourethane) Synthesis and 3D Printing

CART: Carrier‐Based Actuatable and Reprogrammable Transport

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