State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Nanjing University, Nanjing, 210023, China.
State Key Laboratory of Analytical Chemistry for Life Science, Nanjing University, Nanjing, 210023, China.
Angew Chem Int Ed Engl. 2019 Mar 4;58(10):3162-3166. doi: 10.1002/anie.201900283. Epub 2019 Feb 14.
The aggregation-induced electrochemiluminescence (AIECL) of carboranyl carbazoles in aqueous media was investigated for the first time. Quantum yields, morphologies, and particle sizes were observed to determine the electrochemiluminescence (ECL) performance of these aggregated organic dots (ODs). All compounds exhibit much higher ECL stability and intensity than the carborane-free compound, demonstrating the essential role of the carboranyl motif. Moreover, the results of cyclic voltammetry (CV) suggest that oxidation/reduction reactions take place at the carboranyl motif. The excited states of ODs were proposed to be generated by the mechanism of surface state transitions. More importantly, these compounds show a reductive-oxidative mechanism in contrast to other organic materials that show oxidative-reductive mechanisms. Our experiments and data have established the relation between AIE organic structures and ECL properties that has a strong potential for biological and diagnostic applications.
首次研究了碳硼烷咔唑在水相中的聚集诱导电化学发光（AIECL）。通过观察量子产率、形态和粒径来确定这些聚集有机点（OD）的电化学发光（ECL）性能。所有化合物都表现出比无碳硼烷化合物更高的 ECL 稳定性和强度，这表明碳硼烷基序的重要作用。此外，循环伏安法（CV）的结果表明，氧化/还原反应发生在碳硼烷基序上。ODs 的激发态被提出是通过表面态跃迁机制产生的。更重要的是，与其他表现出氧化还原机制的有机材料相比，这些化合物显示出还原氧化机制。我们的实验和数据建立了 AIE 有机结构与 ECL 性质之间的关系，这对于生物和诊断应用具有很大的潜力。
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