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首页> 外文期刊>Advanced Functional Materials >Functionalized Siloles: Versatile Synthesis, Aggregation-induced Emission, And Sensory And Device Applications
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Functionalized Siloles: Versatile Synthesis, Aggregation-induced Emission, And Sensory And Device Applications

机译：功能化硅胶：多功能合成，聚集诱导的排放以及感官和设备应用

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摘要

The synthesis of functionalized sitoles has been a challenge because of the incompatibility of polar functional groups with the reactive intermediates in the conventional protocols for silole synthesis. In this work, a synthetic route for silole functionalization is elaborated, through which a series of functionalized siloles are successfully prepared. Whereas light emissions of traditional luminophores are often quenched by aggregation, most of the functionalized silotes show an exactly opposite phenomenon of aggregation-induced emission (AIE). The siloles are nonemissive when dissolved in their good solvents but become highly luminescent when aggregated in their poor solvents or in the solid state. Manipulation of the aggregation-deaggregation processes of the siloles enables them to play two seemly antagonistic roles and work as both excellent quenchers and efficient emitters. The AIE effect endows the siloles with multifaceted functionalities, including fluorescence quenching, pH sensing, explosive detection, and biological probing. The sensing processes are very sensitive (with detection limit down to 0.1 ppm) and highly selective (with capability of discriminating among different kinds of ions, explosives, proteins, DNAs, and RNAs). The siloles also serve as active layers in the fabrication of electroluminescent devices and as photosensitive films in the generation of fluorescence patterns.
机译：由于极性官能团与硅烷合成的常规方案中的反应性中间体不相容，因此官能化的谷甾烷的合成一直是一个挑战。在这项工作中，阐述了用于硅烷官能化的合成途径，通过该途径成功制备了一系列官能化的硅烷。传统发光体的发光通常通过聚集来淬灭，而大多数功能化的孤骨则显示出与聚集诱导的发射（AIE）完全相反的现象。硅烷在溶解于它们的良溶剂中时是不容许的，但是当聚集在它们的不良溶剂中或处于固态时会变得高度发光。操纵筒仓的聚集-解聚过程使它们能够发挥两个看似拮抗的作用，并同时充当出色的淬灭剂和有效的发射体。 AIE效应赋予了硅谷多种功能，包括荧光猝灭，pH感应，爆炸物检测和生物探测。传感过程非常灵敏（检测限低至0.1 ppm），并且选择性强（能够区分不同种类的离子，爆炸物，蛋白质，DNA和RNA）。硅石柱在电致发光器件的制造中还用作活性层，并且在荧光图案的产生中用作光敏膜。

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