標題: | Pyrene-SH functionalized OTFT for detection of Hg2+ ions in aquatic environments |
作者: | Rullyani, Cut Shellaiah, Muthaiah Ramesh, Mohan Lin, Hong-Cheu Chu, Chih-Wei 材料科學與工程學系 應用化學系 Department of Materials Science and Engineering Department of Applied Chemistry |
關鍵字: | Organic thin film transistor;Mercury sensor;Pyrene derivative |
公開日期: | 1-六月-2019 |
摘要: | Mercury ion (Hg2+) sensor based on bottom gate top contact organic thin film transistor (OTFT) was fabricated. The OTFT channel area was functionalized with pyrene that contain thiol group, which has strong binding affinity toward Hg2+ ion. The OTFT sensor exhibited a charge mobility of 0.28 cm(2) V-1 s(-1), a threshold voltage of -22.3 V and on-to-off ratio 10(3). The sensor shows high selectivity to Hg2+ ion over other two valence metal ions. OTFT sensor exhibited high sensitivity to Hg2+ ion, indicated by increasing of drain current after exposed to different concentration of Hg2+ ion ranging from 1 mM to 0.01 mu M. Moreover, the OTFT sensor capability for practical application was also demonstrated by sensing the present of 25 mu M of Hg2+ ion in tap, drinking and seawater samples. |
URI: | http://dx.doi.org/10.1016/j.orgel.2019.03.015 http://hdl.handle.net/11536/152286 |
ISSN: | 1566-1199 |
DOI: | 10.1016/j.orgel.2019.03.015 |
期刊: | ORGANIC ELECTRONICS |
Volume: | 69 |
起始頁: | 275 |
結束頁: | 280 |
顯示於類別: | 期刊論文 |