Next Article in Journal
A MEMS-based Air Flow Sensor with a Free-standing Micro-cantilever Structure
Previous Article in Journal
An Electronic Measurement Instrumentation of the Impedance of a Loaded Fuel Cell or Battery
Sensors 2007, 7(10), 2378-2388; doi:10.3390/s7102378

Development of QCM Trimethylamine Sensor Based on Water Soluble Polyaniline

2 and 4,*
1 National Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou 310027, P.R.China 2 Department of Biomedical Engineering, Zhejiang University, Hangzhou 310027, P.R.China 3 School of Environmental and Material Engineering, Center of Advanced Functional Materials, Yantai University, Yantai 264005, P.R.China 4 Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, P.R.China
* Author to whom correspondence should be addressed.
Received: 30 August 2007 / Accepted: 16 October 2007 / Published: 17 October 2007
View Full-Text   |   Download PDF [781 KB, uploaded 21 June 2014]   |   Browse Figures


A rapid, sensitive, low-cost device to detect trimethylamine was presented in thispaper. The preparation of water soluble polyaniline was firstly studied. Then the polyanilinewas characterized via Fourier transform infrared spectroscopy (FTIR), UV-visiblespectroscopy and scanning electron microscopy (SEM). Based on the water solublepolyaniline film, a quartz crystal microbalance (QCM) sensor for trimethylamine detectionwas fabricated and its characteristics were examined. The sensor consisted of one quartzcrystal oscillator coated with the polyaniline film for sensing and the other one forreference. Pretreated with trimethylamine, the QCM sensor had an excellent linearsensitivity to trimethylamine. Easily recovered by N2 purgation, the response of the sensorexhibited a good repeatability. Responses of the sensor to trimethylamine, ethanol and ethylacetate were compared, and the results showed that the response was related to the polarityof the analyte vapor. Experimental result also showed that the sensitivity of the sensor wasrelatively stable within one month. The simple and feasible method to prepare and coat thepolyaniline sensing film makes it promising for mass production.
Keywords: QCM; Gas Sensor; Conducting Polymer; Polyaniline; Trimethylamine QCM; Gas Sensor; Conducting Polymer; Polyaniline; Trimethylamine
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Share & Cite This Article

Further Mendeley | CiteULike
Export to BibTeX |
EndNote |
MDPI and ACS Style

Li, G.; Zheng, J.; Ma, X.; Sun, Y.; Fu, J.; Wu, G. Development of QCM Trimethylamine Sensor Based on Water Soluble Polyaniline. Sensors 2007, 7, 2378-2388.

View more citation formats

Related Articles

Article Metrics

For more information on the journal, click here


[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert