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Tetrakis(4-aminophenyl) ethene-doped perylene microcrystals with strong electrochemiluminescence for biosensing applications.
Analyst ( IF 3.6 ) Pub Date : 2020-06-17 , DOI: 10.1039/d0an00997k Xia Zhong 1 , Ming-Hui Jiang , Yan-Mei Lei , Ya-Qin Chai , Ruo Yuan , Ying Zhuo
Analyst ( IF 3.6 ) Pub Date : 2020-06-17 , DOI: 10.1039/d0an00997k Xia Zhong 1 , Ming-Hui Jiang , Yan-Mei Lei , Ya-Qin Chai , Ruo Yuan , Ying Zhuo
Affiliation
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Perylene and its derivatives, as classical organic polycyclic aromatic hydrocarbon (PAH) ECL materials, have attracted extensive attention due to their excellent photoelectric activity and good structural controllability. As is well-known, the molecular structure of perylene is composed of five coplanar aromatic rings. There are intense π–π stacking interactions between perylene molecules, which lead to their aggregation and poor solubility in aqueous media. Unfortunately, this aggregation can weaken or even quench the emission intensity of perylene owing to the aggregation-caused quenching (ACQ) effect, finally limiting the analytical application of perylene in biological detection. In this work, perylene composite microcrystals (ETTA@Pe MCs) doped with non-planar molecular tetrakis(4-aminophenyl)ethene were synthesized in the aqueous phase by a surfactant-assisted self-assembly method. During this process, the intense π–π stacking interactions between perylene monomers were suppressed by doping. As a result, the ETTA@Pe MCs exhibited a significantly enhanced ECL signal as compared to that of perylene microcrystals (Pe MCs) in the presence of S2O82− as a co-reactant. Moreover, the ETTA@Pe MCs were utilized as a novel electrochemiluminescent (ECL) luminophores to fabricate a sensitive ECL biosensor for the quantitative analysis of dopamine (DA), which displayed a favorable linear response from 1 to 100 μmol L−1 with a detection limit of 0.96 nmol L−1.
中文翻译：
四（4-氨基苯基）乙烯掺杂的per微晶，具有强的化学发光能力，可用于生物传感应用。
classical及其衍生物作为经典的有机多环芳烃（PAH）ECL材料，因其优异的光电活性和良好的结构可控性而受到广泛关注。众所周知，per的分子结构由五个共平面的芳环组成。per分子之间存在强烈的π–π堆积相互作用，从而导致它们的聚集和在水性介质中的不良溶解性。不幸的是，由于聚集引起的猝灭（ACQ）效应，这种聚集会减弱甚至消除even的发射强度，最终限制了per在生物检测中的分析应用。在这项工作中 通过表面活性剂辅助自组装法在水相中合成了非平面分子四（4-氨基苯基）乙烯掺杂的复合微晶（ETTA @ Pe MCs）。在这个过程中，per掺杂抑制了ylene单体之间强烈的π-π堆积相互作用。结果，与存在S的per微晶（Pe MC）相比，ETTA @ Pe MCs的ECL信号明显增强。2 O 8 2-作为共反应物。此外，ETTA @ Pe MC被用作新型电化学发光（ECL）发光体，以制备用于定量分析多巴胺（DA）的灵敏ECL生物传感器，该传感器在检测到1至100μmolL -1时表现出良好的线性响应极限为0.96 nmol L -1。
更新日期：2020-07-30
中文翻译：
四（4-氨基苯基）乙烯掺杂的per微晶，具有强的化学发光能力，可用于生物传感应用。
classical及其衍生物作为经典的有机多环芳烃（PAH）ECL材料，因其优异的光电活性和良好的结构可控性而受到广泛关注。众所周知，per的分子结构由五个共平面的芳环组成。per分子之间存在强烈的π–π堆积相互作用，从而导致它们的聚集和在水性介质中的不良溶解性。不幸的是，由于聚集引起的猝灭（ACQ）效应，这种聚集会减弱甚至消除even的发射强度，最终限制了per在生物检测中的分析应用。在这项工作中 通过表面活性剂辅助自组装法在水相中合成了非平面分子四（4-氨基苯基）乙烯掺杂的复合微晶（ETTA @ Pe MCs）。在这个过程中，per掺杂抑制了ylene单体之间强烈的π-π堆积相互作用。结果，与存在S的per微晶（Pe MC）相比，ETTA @ Pe MCs的ECL信号明显增强。2 O 8 2-作为共反应物。此外，ETTA @ Pe MC被用作新型电化学发光（ECL）发光体，以制备用于定量分析多巴胺（DA）的灵敏ECL生物传感器，该传感器在检测到1至100μmolL -1时表现出良好的线性响应极限为0.96 nmol L -1。
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