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首页> 外文期刊>Chemistry: A European journal >Orientational Organization of Organic Semiconductors within Periodic Nanoscale Silica Channels: Modification of Fluorophore Photophysics through Hierarchical Self-Assembly
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Orientational Organization of Organic Semiconductors within Periodic Nanoscale Silica Channels: Modification of Fluorophore Photophysics through Hierarchical Self-Assembly

机译：周期性纳米二氧化硅通道内有机半导体的定向组织：通过分层自组装对荧光团光物理的修饰。

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摘要

A novel hierarchical organic-inorganic self-assembly approach is proposed in driving the orientational organization of small organic semiconductors (anthracene, in this case). A cationic surfactant with the special organic semiconductor anthracene at the hydrophobic tail was synthesized and used as both the structure-directing agent and as functional nanobuilding blocks. The self-assembly procedure was rapid and allowed for the uniform and molecular-level controllable organization of the organic semiconductors within periodic nanoscale silica channels. A range of techniques were used to demonstrate that the photophysical and photochemical nature of anthracene is significantly altered in the inorganic host, consistent with orientational packing of the organic semiconductors and excimer formation within the channels, from which energy migration and significant emission occur. The nano-composite has also been demonstrated to show an interesting selective sensor function with respect to small solvent molecules. We suggest that this method could be used to drive the assembly of a wide range of organic semiconductor guests, offering the development of a variety of useful, smart nanomaterials that are able to self-assemble in a controllable and robust fashion.
机译：在驱动小型有机半导体（在此情况下为蒽）的取向组织方面，提出了一种新颖的有机-无机自组装分层方法。合成了在疏水尾部具有特殊有机半导体蒽的阳离子表面活性剂，并将其用作结构导向剂和功能性纳米结构单元。自组装过程是快速的，并且允许有机半导体在周期性纳米级二氧化硅通道内的均匀且分子水平可控的组织。一系列技术被用来证明蒽在无机主体中的光物理和光化学性质发生了显着变化，这与有机半导体的定向堆积和通道内受激准分子的形成相一致，由此发生了能量迁移和大量发射。纳米复合材料还被证明对小的溶剂分子显示出有趣的选择性传感器功能。我们建议，该方法可用于驱动各种有机半导体客体的组装，从而提供了各种有用的，智能的纳米材料的开发，这些材料能够以可控且坚固的方式进行自组装。

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