P1.1.4 Phthalocyanine Organic ThinFilm Transistors for the Detection of dimethyl methyl phosphonate (DMMP)
- Event
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
Nürnberg/Nuremberg, Germany - Chapter
- P1.1 Biosensors
- Author(s)
- H. Tai, G. Xie, X. Li, B. Zhang, W. Dan - State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China (UESTC) (China)
- Pages
- 826 - 829
- DOI
- 10.5162/IMCS2012/P1.1.4
- ISBN
- 978-3-9813484-2-2
- Price
- free
Abstract
The electrical properties of Metal-Phthalocyanines (M-Pc) are affected upon exposure to gases containing not only some oxidizing/deoxidizing molecules but also nerve agent simulants. This phenomenon finds application in the use of Organic Thin-Film Transistors (OTFTs) based on copper phthalocyanine (CuPc) and cobalt phthalocyanine (CoPc) as gas sensors. In this work, tests of dimethyl methyl phosphonate (DMMP) detecting were carried out, and the sensing mechanism of OTFT DMMP sensors was further investigated by the transfer curve of OTFTs and the UV-Vis absorption spectra of sensitive films before and during DMMP vapor exposure. The results showed that MPc-based OTFTs can represent a new class of DMMP sensors.