A selective chemiresistive sensor for the cancer-related volatile organic compound hexanal by using molecularly imprinted polymers and multiwalled carbon nanotubes.
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| Abstract |
A chemiresistive sensor is described for the lung cancer biomarker hexanal. A composite consisting of molecularly imprinted polymer nanoparticles and multiwalled carbon nanotubes was used in the sensor that is typically operated at a voltage of 4 V and is capable of selectively sensing gaseous hexanal at room temperature. It works in the 10 to 200 ppm concentration range and has a 10 ppm detection limit (at S/N = 3). The sensor signal recovers to a value close to its starting value without the need for heating even after exposure to relatively high levels of hexanal. Graphical abstract Schematic presentation of a chemiresistive sensor for detection of hexanal, a cancer biomarker. The hexanal-imprinted polymeric nanoparticles were synthesized, mixed with multiwalled carbon nanotubes and coated on the surface of an interdigitated electrode to produce a nanocomposite chemiresistor gas sensor for hexanal.
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| Authors | Sajjad Janfaza, Maryam Banan Nojavani, Maryam Nikkhah, Taher Alizadeh, Ali Esfandiar, Mohammad Reza Ganjali |
| Journal | Mikrochimica acta (Mikrochim Acta) Vol. 186 Issue 3 Pg. 137 (02 01 2019) ISSN: 1436-5073 [Electronic] Austria |
| PMID | 30707323 (Publication Type: Journal Article) |
| Chemical References |
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