Efficient synthesis of trefoil-shaped tricyclic polymers by a ROMP-based blocking-cyclization technique

Wang, Hao; Ma, Cuihong; Han, Zhiying; Liao, Xiaojuan; Sun, Ruyi; Xie, Meiran

doi:10.1039/d3py01278f

Polym. Chem.

2024

DOI: 10.1039/d3py01278f

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Efficient synthesis of trefoil-shaped tricyclic polymers by a ROMP-based blocking-cyclization technique

Hao Wang,

Cuihong Ma,

Zhiying Han

et al.

Abstract: Cyclic polymers have unique physical properties and attracted extensive attention, while the precision synthesis of complex cyclic polymers was a challenging subject. Herein, by using a polymeric ladderphane with six...

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Cited by 2 publications

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Complex Cage, Cage-Brush, and Lantern Polymers with Topological-Enhancing Phosphorescence

Wang,

Wang

et al. 2024

Macromolecules

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Cage polymers, a type of special cyclic polymer with an intriguing three-dimensional topology and internal cavity, have attracted increasing attention. However, because of the complicated topological structure, precise preparation of cage polymers is a formidable challenge. Herein, an effective and versatile synthetic strategy was developed to precisely construct complex topological polymers with a well-defined structure and high molecular weight, including three-arm cage, three-arm cage-brush, bi(three-arm) cage, and six-arm cage polymers, by a ring-opening metathesis polymerization-based blocking-cyclization technique using different short polymeric ladderphanes containing multiple living ends as the initial and end-cyclizing motifs, which was the key factor in simply tuning the polymer topology. Moreover, bi-and six-arm lantern polymers were readily derived from the corresponding cage polymers. By comparison of the performance differences between these novel polymers, the dependence of the properties on the topology was revealed. Therefore, this work provided a platform for constructing complex topological polymers with unique topological-enhancing phosphorescent performance and mechanical properties.

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Complex Cage, Cage-Brush, and Lantern Polymers with Topological-Enhancing Phosphorescence

Wang,

Wang

et al. 2024

Macromolecules

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Norbornene Dicarboximide: A Green Alternative for Thiol-Norbornene Photopolymers

Ma,

Wright,

Wang

2024

ACS Macro Lett.

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Carbic anhydride is an underappreciated starting material for 3D-printable, non-hydrogel photopolymers. Compared with other norbornene precursors, carbic anhydride is cheaper and reactive via aminolysis. As a result, the generalized and efficient functionalization with carbic anhydride can increase the utilization of thiol-norbornene photopolymers. Here, we report carbic anhydride’s catalyst-free condensation with two commodity polymers: amine-functionalized polypropylene glycol and polydimethylsiloxane. The reaction completes in 1 h, produces water as the only byproduct, and does not require purification. It is therefore affordable, facile, and green. Mixing the product with thiol cross-linkers and the appropriate photoadditives produces photopolymers that are printable via Digital Light Processing. The photopolymers exhibit tunable tensile properties and a functional surface by varying the polymer backbone and thiol stoichiometry. Moreover, the photopolymers are 3D-printed into true-to-scale human aorta models and porous scaffolds with high resolution. The simple yet versatile platform will benefit additive manufacturing of soft materials and beyond.

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Efficient synthesis of trefoil-shaped tricyclic polymers by a ROMP-based blocking-cyclization technique

Abstract: Cyclic polymers have unique physical properties and attracted extensive attention, while the precision synthesis of complex cyclic polymers was a challenging subject. Herein, by using a polymeric ladderphane with six...

Cited by 2 publications

References 42 publications

Complex Cage, Cage-Brush, and Lantern Polymers with Topological-Enhancing Phosphorescence

Complex Cage, Cage-Brush, and Lantern Polymers with Topological-Enhancing Phosphorescence

Norbornene Dicarboximide: A Green Alternative for Thiol-Norbornene Photopolymers

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