Functional Molecular Systems & Lasers

Head of Research: Mª Fátima Raposo

The research activity addresses the study and characterization of physical-chemical features of surfaces and interfaces of macromolecules which are leading to the build-up of self-organized organic molecular structures and can be used for the creation of molecular electrical, optical, photonics and sensing devices. The research covers the following aspects:

  • Physical-chemical interfacial phenomena at the solid-liquid interface: adsorption from solution at the solid-liquid interface, adsorption/desorption kinetics and isotherms, theory and modelling of adsorption processes;
  • Physics and chemistry of macromolecules surfaces and interfaces: mechanisms giving rise to the attainment of self-organized molecular heterostructures as a result of adsorption from solution that emphasizes a determined feature, interaction of heterostructures in solution;
  • Features of surfaces and interfaces: morphology, behaviour and relation with interface environment, electrical, optical, magnetic, and other functional proprieties and particular sensing capabilities, structural relaxation;
  • Characterization of molecular sensors and devices: sensor and device production optimization, development of dedicated lithography for organic assemblies, housing, interfacing, figure of merit evaluation, reliability and functional relaxation behaviour characterization;
  • Artificial membrane development and characterization:development and characterization of artificial membranes, interaction of membranes with external environment, study of radiation damage on biomimetic membranes; study of DNA-intercalant systems for photodynamic therapy;
  • Dedicated assemblies for in-situ monitoring dynamics at surfaces and interfaces: development of assemblies based on optical spectroscopy, optical birefringence, optical second and third harmonic generation, linear and quadratic electro-optic effects, ellipsometry and surface plasmon resonance.