Surface modified polysiloxane a sensitive coatings for QCM sensors

Zhihua Ying; Yadong Jiang; Xiaosong Du; Guangzhong Xie; Yajie Yang; Huiling Tai

doi:10.1117/12.792242

11 March 2008 Surface modified polysiloxane a sensitive coatings for QCM sensors

Zhihua Ying, Yadong Jiang, Xiaosong Du, Guangzhong Xie, Yajie Yang, Huiling Tai

Proceedings Volume 6984, Sixth International Conference on Thin Film Physics and Applications; 69843O (2008) https://doi.org/10.1117/12.792242
Event: Sixth International Conference on Thin Film Physics and Applications, 2007, Shanghai, China

Abstract

A quartz crystal microbalance (QCM) gas sensor with polysiloxane sensing film was fabricated for detection of dimethyl methyl phosphonate (DMMP), the simulant of chemical warfare agents (CWAs). Poly(methyl-3,3,3-trifluoropropylsiloxane) (PMTFPS) was oxygen plasma treated and then grafted with sulfosalicylic acid (SSA). The resultant SSA modified PMTFPS (SMP) was drop-coated on the electrode of QCM. Compared with the PMTFPS-QCM and SSA-QCM sensors, the sensitivity of SMP-QCM sensor was much higher. However, the SMP films showed less resistance to humidity variations. The selectivity of SMP-QCM sensor to DMMP was also investigated, and better results was showed out after SSA grafted.

Citation Download Citation

Zhihua Ying, Yadong Jiang, Xiaosong Du, Guangzhong Xie, Yajie Yang, and Huiling Tai "Surface modified polysiloxane a sensitive coatings for QCM sensors", Proc. SPIE 6984, Sixth International Conference on Thin Film Physics and Applications, 69843O (11 March 2008); https://doi.org/10.1117/12.792242

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