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Keywords:

  • molecular electronics;
  • nanogaps;
  • nanotechnology;
  • self-assembly;
  • semiconductors
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Silicon nanogaps were bridged in situ by grafting 4-ethynylbenzaldehyde to activate the electrodes and coupling 2,6-diaminoanthra-9,10-quinone to link the coatings. The bridged structures exhibit currents of 11–14 nA at 1 V. The process is reversed by soaking in acidified solution, which causes the current to diminish.