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The performance of fluorescence gas sensor using TiO2 coated dye-porphyrin nanocomposite thin films

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3 Author(s)
Yusoff, N.H. ; Inst. of Microeng. & Nanoelectron., Univ. Kebangsaan Malaysia, Bangi ; Salleh, M.M. ; Yahaya, M.

This paper reports the performance of fluorescence gas sensor to detect the presence of volatile organic compounds. Two thin films were prepared; TiO2 coated with iron (III) meso-tetraphenylporphine chloride (TiO2 coated IMTPPCl) and TiO2 coated with manganase (III) 5,10,15,20 tetra (4-pyridyl)-21 H, 23 H porphine chloride tetrakis (TiO2 coated MnTPCl). All the thin films were deposited on quartz substrate using self-assembly through dip coating technique. The sensing properties of the thin films toward volatile organic compounds; ethanol, acetone and 2-propanol were studied using luminescence spectrometer. In presence of air and volatile organic compounds, thin films produced different emission spectra and ease for chemical identification process. The thin film of nanocomposite TiO2 coated IMTPPCl produced more intensive interaction and exhibit good sensitivity than TiO2 coated MnTPCl nanocomposite thin film. Hence, it is potentially be used as fluorescence gas sensor.

Published in:

Semiconductor Electronics, 2008. ICSE 2008. IEEE International Conference on

Date of Conference:

25-27 Nov. 2008

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