Objective The project aims at the improvement of organic materials for optoelectronic applications, such as photonic antennae, LEDs, lasing microcavities, and electro-optic modulators. The difficulties met with conventional polymer-based organic materials (e.g. limited stability and detrimental interchain interactions) are overcome by the design of highly ordered and well defined materials with full control of intermolecular interactions, making use of the unique properties of oligomeric conjugated molecules encapsulated in host compounds (e.g. host-guest compounds (HGCs) of oligophenylenevinylenes and oligothiophenes with zeolites and perhydrotriphenylene). By molecular and supramolecular engineering, the desired properties are obtained: improved chemical stability (by exclusion of oxygen), high fluorescence quantum yields (by avoiding molecular aggregation), color tuning (by variation of conjugation length and substituents), intrinsic polarization (uniaxial systems), high lasing efficiencies (e.g. by doping with long wavelength emitters), enhanced energy and electron transfer (by low-dimensional, highly ordered systems with small, controllable intermolecular distances), energy funneling (by spatially separating energy donor and acceptor molecules), and high NLO efficiencies (microscopic order on macroscopic scale). The HGCs are structurally characterized by XRD, optical methods using polarized light and by atomic microscopies. NLO efficiencies and luminescence properties are investigated. The rates of electron and energy transfer are determined by fluorescence spectroscopy with femtosecond time resolution and spatial resolutions down to the single-molecule level. Theoretical calculations of molecular properties and intermolecular interactions (dipolar coupling, energy and charge transfer rates) will lead to a detailed understanding of the structure-property relationships of HGCs. The technological potential of the materials for device fabrication is explored. Fields of science engineering and technologymaterials engineeringcolorsnatural scienceschemical sciencesinorganic chemistryinorganic compoundsnatural sciencesphysical sciencesopticsspectroscopyemission spectroscopynatural sciencesphysical sciencesopticsmicroscopynatural sciencesmathematicsapplied mathematicsmathematical model Programme(s) FP5-HUMAN POTENTIAL - Programme for research, technological development and demonstration on "Improving the human research potential and the socio-economic knowledge base" (1998-2002) Topic(s) Data not available Call for proposal Data not available Funding Scheme NET - Research network contracts Coordinator THE UNIVERSITY OF TUEBINGEN EU contribution No data Address Auf der Morgenstelle 8 72076 TUEBINGEN Germany See on map Total cost No data Participants (7) Sort alphabetically Sort by EU Contribution Expand all Collapse all CENTRO RICERCHE FIAT S.C.P.A Italy EU contribution No data Address 50,STRADA TORINO, 50 10043 ORBASSANO See on map Links Website Opens in new window Total cost No data ECOLE NORMALE SUPERIEURE DE CACHAN France EU contribution No data Address Avenue du President Wilson 61 94230 CACHAN See on map Total cost No data ITALIAN INSTITUTE FOR THE PHYSICS OF MATTER Italy EU contribution No data Address Corso Perrone 24 16152 GENOVA See on map Total cost No data MATERIA NOVA Belgium EU contribution No data Address Place du Parc, 20 7000 MONS-BERGEN See on map Total cost No data NATIONAL RESEARCH COUNCIL OF ITALY Italy EU contribution No data Address Via E. Bassini 15 20133 MILANO See on map Total cost No data THE UNIVERSITY OF TUEBINGEN Germany EU contribution No data Address Auf der Morgenstelle 18 72076 TUEBINGEN See on map Total cost No data UNIVERSITY OF BERNE Switzerland EU contribution No data Address 3,Freiestrasse 3 3012 BERN See on map Total cost No data