π-Conjugated polymers have received increasing attention in electrochromic material research because their color change can be altered over a wide range by introducing electron-donor (D) and electron-acceptor (A) moieties. In this study, we have synthesized curved corannulene-based monomers with D and A moieties and applied them to prepare π-conjugated polymers to drive color switching. The absorption and emission properties of our conjugated polymers can be tuned by inserting D and A moieties into the conjugated backbone. Through this study, it has been demonstrated that corannulene-based conjugated polymers exhibit stable electrochromic properties with a high optical contrast ratio. Furthermore, emissions in the solid state and reversible electrofluorescence switching are observed in these polymers. This might be due to the inhibition of aggregation-induced quenching through the incorporation of nonplanar corannulene in the π-conjugated backbone. Based on these results, we consider corannulene-embedded π-conjugated polymers as a new π-conjugated system with versatile and tunable optical properties for application in modern optoelectronic devices.

中文翻译：

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具有电致变色特性的基于Corannulene的供体-受体型共轭聚合物

π-共轭聚合物在电致变色材料研究中受到越来越多的关注，因为它们的颜色变化可以通过引入电子供体 (D) 和电子受体 (A) 部分在很宽的范围内改变。在这项研究中，我们合成了具有 D 和 A 部分的弯曲的芴烯基单体，并将它们应用于制备 π 共轭聚合物以驱动颜色切换。我们的共轭聚合物的吸收和发射特性可以通过将 D 和 A 部分插入共轭主链来调节。通过这项研究，已经证明基于蒌烯的共轭聚合物表现出稳定的电致变色性能和高光学对比度。此外，在这些聚合物中观察到固态发射和可逆电荧光转换。这可能是由于通过在 π 共轭骨架中掺入非平面 coranulene 来抑制聚集诱导的淬灭。基于这些结果，我们认为嵌入角环烯的 π 共轭聚合物是一种新的 π 共轭系统，具有通用和可调的光学特性，可用于现代光电器件。