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Organic thin film transistors used as ultra-sensitive sensors.

This is presently the principal activity of the group. The main objective is to design, implement and study completely innovative ultra-sensitive organic transistor devices (OTFT) for detection of chemical and biological analytes. It has been demonstrated that OTFT sensors show an improved sensitivity connected to field-effect operation. This resulted in the differential detection of enantiomers at concentrations three orders of magnitude lower than state-of-the-art.

Related activities under this topic are:

  • electrochemical enzyme sensors;
  • organic field-effect transistors;
  • electrochemically gated organic transistor

The main field of application are low cost and large area flexible plastic circuits and disposable chemical and biological sensors. In these areas two EU founded projects BioEGOFET, and FLEXSmell are currently running.

Toxic-gas sensors based on palladium and gold nanoparticles. 

Gold and palladium metal nanoparticles are produced using electrochemical synthesis techniques, already developed in the group. Such systems are then used as active layers in sensing devices both in a capacitors and a resistor configuration for the analysis of toxic gases such as NOX. Some of these materials are also being successfully employed in heterogeneous catalysis. 

Related activities under this topic are:

  • metal-polymer nanostructured materials;
  • electrochemistry at semiconductive electrodes.

Analytical characterization of organic semiconductor to be implemented into organic field-effect devices. 

This activity is carried out thanks to the fruitful collaborations with other research groups with the aim of designing sensing devices based on novel organic and nanostructured active layers with improved selectivity. Studies aimed at optimizing organic active layers-gate dielectric interface quality are also currently carried out.

Related activities under this topic are:

  • surface chemical analysis;
  • organic semiconductor thin-films;
  • biologically relevant supra-molecular structures.

Nanostructured composite with biocidal properties. 

This activity focuses on the synthesis of stabilized copper and silver nano-particles uniformly incorporated into polymer matrices. Thin films of such materials show strong biocidal properties to numerous pathogens and release properties and phase modulated. 

Related activities under this topic are:

  • metal-polymer nanostructured materials;
  • nanostructured bio-active and bacteriostatic materials.