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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
  Author(s): 
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
  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 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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