We demonstrate the aggregation-induced electrochemiluminescence (AIECL) generated by 1,1,2,2-tetrakis(4-bromophenyl)ethane (TBPE)-based conjugated microporous polymers (TBPE-CMPs) and its biosensing application. We synthesized three TBPE-CMPs (i.e., TBPE-CMP-1, -2, -3) using three different molecules including tris(4-ethynylphenyl)amine (TEPA), 4,4'-diethynylbiphenyl (DEP), and 2,4,6-tris(4-ethynylphenyl)-1,3,5-triazine (TEPT). The TBPE-CMPs can act as electrochemiluminescence (ECL) emitters to generate AIECL. Among them, TBPE-CMP-1 exhibits the highest ECL efficiency (1.72%) due to the improved electron-hole recombination efficiency and efficient suppression of nonradiative transition. Moreover, the ECL properties of TBPE-CMPs can be tuned by the introduction of different conjugated molecules that can decrease the energy gap to facilitate the injection of an electron into the conjugated polymer backbone. Importantly, TBPE-CMP-1 can be used to construct an ECL sensor for the detection of dopamine, whose electro-oxidation products (e.g., leucodopaminechrome (LDC), dopaminechrome (DC), 5,6-dihydroxyindole (DHI), and 5,6-indolequinone (IDQ)) may function as energy acceptors to quench the ECL emission of TBPE-CMP-1. This ECL sensor exhibits high sensitivity and good anti-interference capability against ascorbic acid and uric acid.

中文翻译：

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基于四苯乙炔的共轭微孔聚合物，用于聚集诱导的电化学发光。

我们展示了由1,1,2,2-四（4-溴苯基）乙烷（TBPE）基共轭微孔聚合物（TBPE-CMPs）生成的聚集诱导的电化学发光（AIECL）及其生物传感应用。我们使用三种不同的分子，包括三（4-乙炔基苯基）胺（TEPA），4,4'-二乙炔基联苯（DEP）和2，合成了三种TBPE-CMP（即TBPE-CMP-1，-2，-3） 4,6-三（4-乙炔基苯基）-1,3,5-三嗪（TEPT）。TBPE-CMP可以用作电化学发光（ECL）发射器以生成AIECL。其中，TBPE-CMP-1由于提高了电子-空穴复合效率并有效抑制了非辐射跃迁而具有最高的ECL效率（1.72％）。此外，TBPE-CMP的ECL特性可以通过引入不同的共轭分子来调节，这些共轭分子可以减小能隙，从而促进电子注入到共轭聚合物主链中。重要的是，TBPE-CMP-1可用于构建用于检测多巴胺的ECL传感器，该多巴胺的电氧化产物（例如，亮多巴胺铬（LDC），多巴胺铬（DC），5,6-二羟基吲哚（DHI）和5 1,6-吲哚醌（IDQ）可以充当能量受体来淬灭TBPE-CMP-1的ECL发射。该ECL传感器对抗坏血酸和尿酸显示出高灵敏度和良好的抗干扰能力。亮白多巴胺铬（LDC），多巴胺铬（DC），5,6-二羟基吲哚（DHI）和5,6-吲哚醌（IDQ））可以充当能量受体来淬灭TBPE-CMP-1的ECL发射。该ECL传感器对抗坏血酸和尿酸显示出高灵敏度和良好的抗干扰能力。亮白多巴胺铬（LDC），多巴胺铬（DC），5,6-二羟基吲哚（DHI）和5,6-吲哚醌（IDQ））可以充当能量受体来淬灭TBPE-CMP-1的ECL发射。该ECL传感器对抗坏血酸和尿酸显示出高灵敏度和良好的抗干扰能力。