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首页> 外文期刊>Advanced Functional Materials >Nanoimprinted, Submicrometric, MOF-Based 2D Photonic Structures: Toward Easy Selective Vapors Sensing by a Smartphone Camera
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Nanoimprinted, Submicrometric, MOF-Based 2D Photonic Structures: Toward Easy Selective Vapors Sensing by a Smartphone Camera

机译：纳米压印，亚微米，基于MOF的2D光子结构：通过智能手机相机实现轻松的选择性蒸汽感测

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摘要

In this work, a soft-lithographic approach to fabricate submicrometer metal organic framework (MOF)-based 2D photonic structures is described. Nano-metric zeolitic imidazole framework material ZIF-8 (zinc) is chosen as the sensible MOF material because of its chemical stability and its vapor selective adsorption properties. Two different systems are fabricated: nanopatterned colloidal ZIF-8 homo-and ZIF-8/TiO2 heterostructures. Several features (stripes, squares, etc.) with dimensions of 200 nm are replicated on different substrates such as silicon, flexible plastics, and even aluminum cans, over relatively large surfaces (up to 1 cm 2). In addition, the use of these photonic MOF-heterostructures as very low-cost sensing platforms compatible with smartphone technology is demonstrated. This method relies on the evaluation of the change in diffraction efficiency of the photonic MOF-patterns, induced by the MOF refractive index variation, which is simply detected by a charge coupled device (CCD) camera, as those integrated in smartphones, without need for complex optical instrumentations for transduction data processing. Performances of the sensors are first evaluated using isopropyl alcohol adsorption/desorption cycling as a model case. In addition, a "real" environmental issue is tackled. Selective detection of styrene in presence of interfering water is demonstrated at concentrations below the human permissible exposure limit. In situ ellispometric analyses are also carried out in order to confirm the sensor performances and to propose a mechanism for styrene uptake into the nanoMOFs.
机译：在这项工作中，描述了一种软光刻方法来制造基于亚微米金属有机框架（MOF）的2D光子结构。纳米沸石咪唑骨架材料ZIF-8（锌）因其化学稳定性和蒸气选择性吸附特性而被选为明智的MOF材料。制造了两种不同的系统：纳米图案的胶体ZIF-8均质和ZIF-8 / TiO2异质结构。在相对较大的表面（最大1 cm 2）上，将尺寸为200 nm的多个特征（条纹，正方形等）复制到不同的基材上，例如硅，柔性塑料甚至铝罐。此外，还演示了将这些光子MOF异质结构用作与智能手机技术兼容的超低成本传感平台。此方法依赖于评估由MOF折射率变化引起的光子MOF模式的衍射效率变化，该变化可以简单地由电荷耦合器件（CCD）相机（如集成在智能手机中的相机）检测到，而无需用于转换数据处理的复杂光学仪器。首先以异丙醇吸附/解吸循环为模型案例评估传感器的性能。此外，还解决了“实际”环境问题。在低于人允许的暴露极限的浓度下，证明了在干扰水存在下对苯乙烯的选择性检测。还进行了原位椭偏分析，以确认传感器的性能并提出将苯乙烯吸收到nanoMOFs中的机制。

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  • 来源
    《Advanced Functional Materials》 |2016年第1期|81-90|共10页
  • 作者

    Dalstein Olivier; Ceratti Davide R.; Boissiere Cedric; Grosso David; Cattoni Andrea; Faustini Marco;

  • 作者单位

    Univ Paris 06, Univ Paris 04, CNRS, Coll France UMR 7574,Chim Mat Condensee Paris, F-75005 Paris, France;

    Univ Paris 06, Univ Paris 04, CNRS, Coll France UMR 7574,Chim Mat Condensee Paris, F-75005 Paris, France;

    Univ Paris 06, Univ Paris 04, CNRS, Coll France UMR 7574,Chim Mat Condensee Paris, F-75005 Paris, France;

    Univ Paris 06, Univ Paris 04, CNRS, Coll France UMR 7574,Chim Mat Condensee Paris, F-75005 Paris, France|LPN, F-91460 Marcoussis, France|IM2NP, Fac Sci & Tech, F-13397 Marseille, France;

    LPN, F-91460 Marcoussis, France;

    Univ Paris 06, Univ Paris 04, CNRS, Coll France UMR 7574,Chim Mat Condensee Paris, F-75005 Paris, France;

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