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Paper   IPM / CMNL / 15526
Condensed Matter National Laboratory
  Title:   A selective chemiresistive sensor for the cancer-related volatile organic compound hexanal by using molecularly imprinted polymers and multiwalled carbon nanotubes
1.  Sajjad Janfaza
2.  Maryam Banan Nojavani
3.  Maryam Nikkhah
4.  Taher Alizadeh
5.  Ali Esfandiar
6.  Mohammad Reza Ganjali
  Status:   Published
  Journal: Microchim. Acta
  Vol.:  186
  Year:  2019
  Pages:   137
  Publisher(s):   Springer-Verlag
  Supported by:  IPM
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 4V 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.

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