Processive Catalytic Polymerization via Molecularly Confined Catalyst DOI Creative Commons
Zefeng Zhou, Wei‐Shang Lo, Gavin J. Giardino

et al.

Published: Dec. 11, 2023

Controlling the reactivity of propagating chain end in polymerization reactions is crucial for achieving well-defined polymers both synthetic polymer chemistry1,2 and biology3. Processive enzymes nature have evolved substrate-enclosing structures to protect catalytic center from reaccess by nascent polymer4. However, substrate enclosure has not been adopted chemistry improving processivity. Here, we present a strategy processive encapsulating catalysts ring-opening metathesis (ROMP) into sub-surface cages metal-organic framework. The encapsulation within framework protects secondary reaction with alkenes backbone polymer, while allowing grow out little impedance achieve continuous growth. As result, ultra-high-molecular-weight low dispersity were generated ROMP low-strain cyclic olefins such as cis-cyclooctene cyclopentene. We demonstrate that degradable backbones enhanced mechanical adhesive properties could be readily this approach.

Language: Английский

Processive Catalytic Polymerization via Molecularly Confined Catalyst DOI Creative Commons
Zefeng Zhou, Wei‐Shang Lo, Gavin J. Giardino

et al.

Published: Dec. 11, 2023

Controlling the reactivity of propagating chain end in polymerization reactions is crucial for achieving well-defined polymers both synthetic polymer chemistry1,2 and biology3. Processive enzymes nature have evolved substrate-enclosing structures to protect catalytic center from reaccess by nascent polymer4. However, substrate enclosure has not been adopted chemistry improving processivity. Here, we present a strategy processive encapsulating catalysts ring-opening metathesis (ROMP) into sub-surface cages metal-organic framework. The encapsulation within framework protects secondary reaction with alkenes backbone polymer, while allowing grow out little impedance achieve continuous growth. As result, ultra-high-molecular-weight low dispersity were generated ROMP low-strain cyclic olefins such as cis-cyclooctene cyclopentene. We demonstrate that degradable backbones enhanced mechanical adhesive properties could be readily this approach.

Language: Английский

Citations

1