Porosity matters on electronics

Detection and quantification of chemical species is a critical and challenging task for biotechnology and environmental monitoring. A key principle for the fabrication of chemical sensors is to sequentially implement a recognition-transduction protocol. Here, we take advantage of the molecular recognition properties of porous materials and integrate them into a sophisticated electronic sensor based on quartz crystal microbalance (QCM) technology. We use this system not only for the improvement of sensor performance, selectivity and sensitivity, but also for the fundamental study of adsorption/desorption kinetics.

エレクトロニクスデバイスと多孔性材料の融合

バイオテクノロジーや環境モニタリングにおいて、低濃度の化学物質を正確に、定量的にセンシングすることは重要です。私たちは、多孔性材料の高度な分子認識能に注目し、高感度のセンサーデバイス(水晶振動子マイクロバランス)と融合することで、高選択性・高感度の分子センサーの開発を行っています。このセンサーを用いて分子の吸着・脱着の速度論的理解を深める基礎的研究も展開しています。

<Original Papers>

“Porous coordination polymer hybrid device with quartz oscillator: effect of crystal size on sorption kinetics”
J. Am. Chem. Soc. 2011, 133, 11932-11935.

“Crystal morphology-directed framework orientation in porous coordination polymer films and freestanding membranes via Langmuir-Blodgettry”
J. Mater. Chem. 2012, 22, 10159-10165.

“Binary Janus Porous Coordination Polymer Coatings for Sensor Devices with Tunable Analyte Affinity”
Angew. Chem. Int. Ed. 2013, 52, 341-345.

“Impact of Molecular Clustering Inside Nanopores on Desorption Processes”
J. Am. Chem. Soc. 2013, 135, 4608-4611.

“Impact of Crystal Orientation on the Adsorption Kinetics of a Porous Coordination Polymer/Quartz Crystal Microbalance Hybrid Sensor”
J. Mater. Chem. C 20142, 3336-3344.

“Terahertz phase contrast imaging of sorption kinetics in porous coordination polymer nanocrystals using differential optical resonator”
Opt. Express 201422, 11061-11069.

“Hierarchical structuring of metal-organic framework thin-films on quartz crystal microbalance (QCM) substrates for selective adsorption applications”
J. Mater. Chem. A. 2015, 3, 23385-23394.