Abstract
A novel route to highly aromatic polyimides is presented and is used to form multiblock copolymers which is inherently difficult to achieve via traditional routes for this important polymer family.
Highlights
The Diels–Alder (D–A) reaction[1] is one of the most applied reactions in organic synthesis[2] and has found multifaceted use in macromolecular chemistry.[3]
We demonstrate a polymerization route to highly aromatic polyimide polymers via a Diels–Alder reaction
A model reaction demonstrated the feasibility of preparing aromatic polyimides with polyphenylene segments via the Diels–Alder reaction of phenylethynyl capped imides with tetraphenylcyclopentadienone
Summary
The Diels–Alder (D–A) reaction[1] is one of the most applied reactions in organic synthesis[2] and has found multifaceted use in macromolecular chemistry.[3]. Aromatic polyimides belong to the group of high-performance polymers and generally exhibit high chain stiffness and rigidity, resulting in excellent stability towards heat and radiation and typically very high glass transition temperatures (Tg) in the range of 200–400 °C.20. They are of high importance in wide variety of high demand applications such as the aircraft and space industry,[21,22] where stability towards heat and radiation paired with light weight compared to 3160 | Polym.
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