Progress of chemical sensors based on metal-organic frameworks (MOFs)

doi:10.16085/j.issn.1000-6613.2017.04.022

Abstract

Abstract: Recently,chemical sensors based on MOFs have aroused a great deal of attention. The features of MOFs materials such as tunable pore size and huge specific surface area can improve the detection selectivity and sensitivity of chemical sensors. Signal transduction is one of major challenges which largely limits the implementation of chemical sensors based on MOFs. Signal transduction methods are summarized in this review,including optical sensors(interferometry,localized surface plasmon resonancem,colloidal crystals,solvatochromism,luminescence-based sensing),impedance spectroscopy,electromechanical sensors(surface acoustic wave sensors,quartz crystal microbalance and microcantilevers). Finally,application prospect of chemical sensors based on MOFs is proposed,and a promising concept for improving sensitive and selective detection is to synthesize more conductive MOFs materials and couple MOFs with vibrational spectroscopy or other analytical techniques that can provide a molecular fingerprint.

Key words: metal-organic frameworks, chemical sensors, selectivity, sensitivity, signal transduction

摘要： 近几年来，基于金属有机骨架材料（MOFs）材料的化学传感器的研究受到人们的广泛关注，MOFs材料可调的孔尺寸和巨大的比表面积提高了气体检测的选择性和灵敏度。MOFs作为传感材料最大的挑战就是信号的传导，本文详细总结了MOFs化学传感器的信号传导方式，如光学传感（如干涉法、局域表面等离子体共振、胶态晶体、溶剂着色、发光传感等）、导电传感和机电传感（如表面声波传感、石英晶体微天平和微悬臂梁等）等；并展望了MOFs化学传感器的应用前景，合成更多具有导电性质的MOFs材料或将MOFs传感材料与振动光谱及其他分析技术相结合是改善MOFs传感器检测灵敏性和选择性的非常有效的方法。

关键词: 金属有机骨架材料, 化学传感器, 选择性, 灵敏性, 信号传导

CLC Number:

O6-1

LI Ying, ZHANG Hongxing, YAN Kele, HU Xuyao, JIA Runzhong, ZOU Bing, XIAO Anshan. Progress of chemical sensors based on metal-organic frameworks (MOFs)[J]. Chemical Industry and Engineering Progress, 2017, 36(04): 1316-1323.

李莹, 张红星, 闫柯乐, 胡绪尧, 贾润中, 邹兵, 肖安山. 基于MOFs材料的化学传感器的研究进展[J]. 化工进展, 2017, 36(04): 1316-1323.

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