DocumentCode :
1672338
Title :
An artificial nose based on m-porphyrin (M = Mg, Zn) thin film and optical spectroscopy
Author :
Kladsomboon, Sumana ; Puntheeranurak, Theeraporn ; Pratontep, Sirapat ; Kerdcharoen, Teerakiat
Author_Institution :
Dept. of Phys., Mahidol Univ., Bangkok, Thailand
fYear :
2010
Firstpage :
968
Lastpage :
969
Abstract :
Artificial nose has recently become an emerging instrument for quality assurance in the food industry. These paper presents the optical gas sensors based on Magnesium - 5,10,15,20 - tetra phenyl - porphyrin (MgTPP) and Zinc - 5,10,15,20 - tetra phenyl - porphyrin (ZnTPP) thin films and their application as an artificial nose. Based on the measurement of optical absorbance response using a general UV-Vis spectroscopy, this artificial noses was tested to discriminate various volatile organic compounds (VOCs) and Thai beverages. Atomic force microscopy (AFM) and X-rays diffraction were used to confirm the polycrystalline structure of the sensing materials. Density functional theory (DFT) calculations reveal that MgTPP interacts more strongly with the VOCs than ZnTPP, especially with water and methanol. The classification results of VOCs and Thai beverage vapors using the principle component analysis indicate that both MgTPP and ZnTPP-based artificial noses can be an efficient tool for quality assurance of alcoholic beverages.
Keywords :
X-ray diffraction; atomic force microscopy; beverage industry; beverages; density functional theory; gas sensors; magnesium; optical sensors; organic semiconductors; principal component analysis; thin films; ultraviolet spectra; visible spectra; water; zinc; Mg-porphyrin thin film; MgTPP thin film; Thai beverages; UV-Vis spectroscopy; X-ray diffraction; Zn-porphyrin thin film; ZnTPP thin film; alcoholic beverages; artificial nose; atomic force microscopy; density functional theory; food industry; magnesium-5,10,15,20-tetra phenyl-porphyrin; methanol; optical absorbance response; optical gas sensors; optical spectroscopy; polycrystalline structure; principle component analysis; sensing materials; volatile organic compounds; water; zinc-5,10,15,20-tetra phenyl-porphyrin; Atomic force microscopy; Food industry; Gas detectors; Instruments; Nose; Optical films; Optical sensors; Quality assurance; Spectroscopy; Zinc;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Nanoelectronics Conference (INEC), 2010 3rd International
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-3543-2
Electronic_ISBN :
978-1-4244-3544-9
Type :
conf
DOI :
10.1109/INEC.2010.5425096
Filename :
5425096
Link To Document :
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