General Access to Allene-Containing Polymers Using the Skattebøl Rearrangement

Area of Science:

• Polymer Chemistry
• Materials Science

Background:

• Postsynthetic modification is key for tuning soft material properties.
• Modifying polymer backbones is challenging due to a lack of reactive main-chain motifs.
• Allenes offer potential for diverse postsynthetic modifications but their synthesis is difficult.

Purpose of the Study:

• To establish a facile route for synthesizing polyallenes.
• To overcome limitations in postsynthetic modification of polymer backbone structures.
• To explore the potential of polyallenes as functional soft materials.

Main Methods:

• Utilized the Skattebøl rearrangement.
• Employed norbornene metathesis polymers as a model system.
• Synthesized polymers with varying allene content (20-95%).

Main Results:

• Achieved facile synthesis of polyallenes via Skattebøl rearrangement.
• Prepared polymers in excellent yields (89-94%) with tunable allene content.
• Demonstrated that the resulting polyallenes possess unique optical properties.

Conclusions:

• Polyallenes can be readily synthesized using the Skattebøl rearrangement.
• These polyallenes are amenable to further postsynthetic modifications.
• Polyallenes represent a promising platform for developing novel functional soft materials.