Rapid-Response Atmospheric Oxygen Sensor Based on Adsorption of Dimethyl(Octyl)(4-(Pyren-4-yl)Butoxy)Silane

Authors: Lin, Yong; Chen, Liusheng; Shi, Yi; Jin, Xigao

Source: Sensor Letters, Volume 5, Numbers 3-4, September/December 2007 , pp. 629-633(5)

Publisher: American Scientific Publishers

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Abstract:

Optical oxygen sensors based on the fluorescence quenching of dimethyl(octyl) (4-(pyren-4-yl)butoxy)silane adsorbed on the surfaces of aluminum or epoxy coating were developed. The fluorescence intensity of the sensors decreased with increasing of oxygen concentration. The oxygen sensitivity of the sensors, which is represented by I₀/I₁₀₀, is about 3.0 where I₀ and I₁₀₀ represent fluorescence intensities of the sensors expose to 100% nitrogen and 100% oxygen, respectively. The Stern-Volmer plots show excellent linearity in oxygen concentration range from 0 to 100%, and the response time is about 2 s for the surrounding atmosphere changing from 100% nitrogen to 100% oxygen or from 100% oxygen to 100% nitrogen.

Keywords: OXYGEN SENSOR; NEW PYRENE DERIVATIVE; OXYGEN SENSITIVITY; RAPID-RESPOND; ADSORPTION

Document Type: Short communication

DOI: http://dx.doi.org/10.1166/sl.2007.243

Publication date: 2007-09-01

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