Azulene is a non-alternant, aromatic hydrocarbon with many exciting characteristics such as having a dipole moment, bright color, stimuli responsiveness, anti-Kasha photophysics, and a small HOMO–LUMO gap when compared to its isomer, naphthalene. These properties make azulene-containing polymers an intriguing entity in the field of functional polymers, especially for organic electronic applications like organic field-effect transistors (OFET) and photovoltaic (PV) cells. Since azulene has a fused five and seven-membered ring structure, it can be incorporated onto the polymer backbone through either of these rings or by involving both the rings. These azulene-connection patterns can influence the properties of the resulting polymers and the chemical synthesis in comparison to the electrochemical synthesis can be advantageous in obtaining desired patterns of substitution. Hence, this review article presents a comprehensive overview of the developments that have taken place in the last three decades in the field of chemical syntheses of azulene-containing homo- and copolymers, including brief descriptions of their key properties.

中文翻译：

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含薁的均聚物和共聚物的化学合成和显着特征

Azulene 是一种非交替的芳香烃，与它的异构体萘相比，具有许多令人兴奋的特性，例如具有偶极矩、鲜艳的颜色、刺激响应性、抗 Kasha 光物理学和小的 HOMO-LUMO 间隙。这些特性使含薁烯的聚合物成为功能聚合物领域的一个有趣的实体，特别是对于有机电子应用，如有机场效应晶体管 (OFET) 和光伏 (PV) 电池。由于 azulene 具有稠合的五元和七元环结构，它可以通过这些环中的任何一个或通过涉及两个环结合到聚合物主链上。这些薁连接模式会影响所得聚合物的性质，与电化学合成相比，化学合成在获得所需的取代模式方面可能是有利的。因此，这篇综述文章全面概述了过去 30 年在含薁烯均聚物和共聚物化学合成领域的发展，包括对其关键特性的简要描述。