Azulene, a unique isomer of naphthalene, has received much interest from researchers in different fields due to its unusual chemical structure with a negatively charged 5‐membered ring fused with a positively charged 7‐membered ring. In particular, incorporation of azulene into polymers has led to many interesting properties. This minireview covers functionalization methods of azulene at its various positions of 5‐ and 7‐membered rings to form azulene derivatives including azulene monomers, and gives an overview of a wide range of azulene‐containing polymers including poly(1,3‐azulene), azulene‐based copolymers with connectivity at 1,3‐positions of the 5‐membered ring, or 4,7‐positions of the 7‐membered ring, as well as copolymers with azulene units as side chains. Their chemical and physical properties together with applications of azulene‐containing polymers have also been summarized.

中文翻译：

---

聚合物中的Azulene及其性质。

Azulene是一种独特的萘异构体，由于其不寻常的化学结构（带负电荷的5元环和带正电荷的7元环）而引起了不同领域的研究者的广泛兴趣。尤其是，将氮杂环丁烷掺入聚合物中导致了许多令人感兴趣的性能。这项小型综述涵盖了在五元和七元环的不同位置形成含氮杂环烯衍生物的含氮杂环烯衍生物的各种功能化方法，并概述了包括聚（1,3-氮杂环丁烯）在内的各种含氮杂环丁烷聚合物，在5元环的1,3位或7元环的4,7位具有连接性的基于z的共聚物，以及具有z单元作为侧链的共聚物。