Metal-Organic Framework Thin Film Coated Optical Fiber Sensors: A Novel Waveguide-Based Chemical Sensing Platform
Metal-Organic Framework Thin Film Coated Optical Fiber Sensors: A Novel Waveguide-Based Chemical Sensing Platform
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DOI：
10.1021/acssensors.7b00808
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发表时间：
2018-02-01
期刊：
影响因子：
8.9
通讯作者：
Ohodnicki, Paul R.
中科院分区：
文献类型：
--
作者：
Kim, Ki-Joong;Lu, Ping;Ohodnicki, Paul R.
光纤与敏感薄膜的集成为实现新型化学传感平台提供了巨大的潜力。在这项研究中，我们提出了一个简单的设计策略和高性能的纳米多孔金属有机框架（MOF）为基础的光学气体传感器，这使得检测范围很广的浓度的小分子的基础上非常小的差异的折射率作为一个功能的MOF框架内的分析物吸附。通过一种简单的溶液方法可以在刻蚀后的光纤表面均匀地形成薄而致密的MOF薄膜，这对基于MOF的传感器器件的可制造性至关重要。相对于其它小气体（H-2、N-2、O-2和CO），所得传感器显示出对CO2气体的高灵敏度/选择性，
Integration of optical fiber with sensitive thin films offers great potential for the realization of novel chemical sensing platforms. In this study, we present a simple design strategy and high performance of nanoporous metal-organic framework (MOF) based optical gas sensors, which enables detection of a wide range of concentrations of small molecules based upon extremely small differences in refractive indices as a function of analyte adsorption within the MOF framework. Thin and compact MOF films can be uniformly formed and tightly bound on the surface of etched optical fiber through a simple solution method which is critical for manufacturability of MOF-based sensor devices. The resulting sensors show high sensitivity/selectivity to CO2 gas relative to other small gases (H-2, N-2, O-2, and CO) with rapid (