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