Abstract We report here that a series of novel donor-acceptor (D–A) conjugated polymers based on isoindigo were synthesized and characterized. As novel electrochromic materials, their optical and electrochemical properties have been investigated. Cyclic voltammograms (CV) of the polymer films exhibit two pairs of obvious redox peaks in the range of 0.76–1.80 V with strong color changes in the visible and near infrared (NIR) regions. The coloring and bleaching time are in the range of 3.5–4.9 s and 4.4–5.0 s, respectively. The amount of char yield at 800 °C in nitrogen for polymers was in the range of 56–64%. Especially, the polymers show strong fluorescence with a fluorescence quantum efficiency (ФPL) of up to 32.5% which is reported firstly. In addition, memory properties, explosive detection and photoelectric properties for polymers are studied which indicating promising results.

中文翻译：

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用于电致变色、存储设备、爆炸物检测和光电探测器的多功能聚合物：具有强荧光的供体-受体共轭异靛蓝衍生物

摘要 我们在此报告合成并表征了一系列基于异靛蓝的新型供体-受体 (D-A) 共轭聚合物。作为新型电致变色材料，已经研究了它们的光学和电化学性能。聚合物薄膜的循环伏安图 (CV) 在 0.76-1.80 V 范围内显示出两对明显的氧化还原峰，在可见光和近红外 (NIR) 区域具有强烈的颜色变化。着色和漂白时间分别在 3.5-4.9 s 和 4.4-5.0 s 的范围内。在 800 °C 下，聚合物在氮气中的炭产量在 56-64% 的范围内。特别是，该聚合物显示出强荧光，荧光量子效率（ФPL）高达 32.5%，这是首次报道。此外，记忆特性，