Humidity sensing properties of calix[4]arene and functionalized calix[4]arene measured using a quartz-crystal microbalance

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题名:	Humidity sensing properties of calix[4]arene and functionalized calix[4]arene measured using a quartz-crystal microbalance
作者:	Su, PG (Su, Pi-Guey) Lin, LG (Lin, Lee-Gin) Tzou, WH (Tzou, Wen-Hau)
贡献者:	Dept Chem
关键词:	Humidity sensor Quartz crystal microbalance Functionalized calix[4]arenes Sensitivity and linearity Adsorption dynamic analysis
日期:	2013-05
上传时间:	2014-02-26 16:19:13 (UTC+8)
摘要:	Humidity sensors were made by coating 25,26,27-tribenzoyloxy-28-hydroxycalix[4]arene (TBHC) and 5-(4'-nitrophenyl)azo-25,26,27-tribenzoyloxy-28-hydroxycalix[4]arene (NTBHC) thin films on a gold electrode of a quartz crystal microbalance (QCM). The thin films were analyzed by atomic force microscopy (AFM). The humidity sensing properties, including sensitivity, sensing linearity, hysteresis, cross-sensitivity effects and long-term stability were also investigated. Water vapor molecules that were adsorbed onto the NTBHC thin film exhibited a larger frequency shift than those adsorbed onto TBHC thin films. Adsorption dynamic analysis and a molecular mechanical calculation (of the association constant) were made to elucidate the way in which a substituent on the upper and lower rims of calix[4]arene increases the sensitivity to humidity. (c) 2013 Elsevier B.V. All rights reserved.
關聯:	SENSORS AND ACTUATORS B-CHEMICAL Volume: 181 Pages: 795-801
显示于类别:	[化學系所] 期刊論文

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