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Keywords:

  • copper;
  • ethylene;
  • hormones;
  • nanotubes;
  • sensors
Thumbnail image of graphical abstract

Comparing apples and oranges: A chemoresistive sensor for ethylene can be obtained simply by mixing copper complex 1 with single-walled carbon nanotubes. The resulting devices show sub-ppm sensitivity and high selectivity towards ethylene. The utility of the sensor was demonstrated by following ripening stages in different fruits.