[18p-D102-1~23] 12.4 Organic light-emitting devices and organic transistors

▲ [18p-D102-13] Digital-Monitoring Technology for The Separation of Column Chromatograph

〇Younsu Jung¹, Hyejin Park², Ashish Sapkota², Yutaka Majima¹, Gyoujin Cho² (1.Tokyo Tech., 2.Sunchon Univ.)

Keywords:Column Chromatograph, Thin film transistor, Roll-to-roll

The traditional column chromatograph in chemistry is used to purify the chemical materials or separate the pure materials from mixtures of compound through single huge column. Furthermore, the high-performance liquid chromatograph (HPLC) has provided the more precise separation to improve quality purified compounds by utilizing the UV-Vis, fluorescence detector and computer data station. However, it required the high cost to set-up the system and hard to modify the device to fit given conditions. To overcome the inconvenience, we developed the new concept of digital column chromatography with low cost, disposable and highly efficient separation processing system by utilizing thin film transistor (TFT) arrays. TFT-based sensor offers a wide range of sensor applications. Especially, fully printed TFT-based sensors have been intensively investigated for the sensor applications due to the merits of low cost, large area, flexibility and easy fabrication. As an obvious extension of TFT-based sensors, a digital column chromatograph was developed by utilizing all R2R printed TFT-arrays as shown in Fig 1. The digital column chromatography can monitor the elution behavior of molecules in the stationary phase so that, without any detector, we can visualize the separation of chemicals in the column. In this study, we constructed the fully roll-to-roll (R2R) gravure printed TFT-based digital column chromatography and then, the separation of chemicals were visualized based on selective sensitivity of the active semiconductor layer of the printed TFT over the target chemical for the purification of chemicals mixtures.
This study was partially supported by MEXT Elements Strategy Initiative to Form Core Research Center; and by BK Plus program, Basic Science Research (NRF-2014R1A6A1030419).