Obiettivo Optically transparent polymer materials which can be employed for optical waveguides over short distances of several metres will be modified in such a way that the transmitted light depends selectively on concurrent environmental factors, such as temperature, pressure, mechanical deformation, incident light, and reversible adsorption of gases or liquids. Thus it is attempted to employ polymer optical fibres (POF) as sensors which are promising and important components in future all-optical control systems.This project is directed towards the development of polymer optical fibre sensors for the detection of alkali, earth-alkali and heavy-metal ions. The sensors will consist of a polymethylmethacrylate (PMMA) waveguide for the transmission of the chemical information, and an ion-selective fluorescent dye (chromoionophore) for the transduction of the chemical recognition into an optical signal, the emitted fluorescence light. In the initial stages of the project, simple azo-functionalized crown-ethers and chelating reagents will be employed as the chromoionophores. Later, novel chromoionophores with higher selectivities and/or fluorescence quantum yields will be synthesized.High-temperature stability, water and oil resistance is essential because such POF-sensors will be particularly exposed to environmental influences. The final sensor will consist of a PMMA-core onto which a photocrosslinked polyorganosiloxane layer doped with the chromoionophore has been applied, so that the sensor can be directly immersed in the analyte phase.The sensor may be further optimized by covalent linkage of the chromoionophore to the polyorganosiloxane cladding, resulting in optical sensors with increased thermal/chemical stabilities, and with improved selectivities and long-term response characteristics. Programma(i) IC-INTAS - International Association for the promotion of cooperation with scientists from the independent states of the former Soviet Union (INTAS), 1993- Argomento(i) 33 - Organic Chemistry and Polymers Invito a presentare proposte Data not available Meccanismo di finanziamento Data not available Coordinatore Universität Ulm Contributo UE Nessun dato Indirizzo Albert-Einstein-Allee 11 89069 Ulm Germania Mostra sulla mappa Costo totale Nessun dato Partecipanti (3) Classifica in ordine alfabetico Classifica per Contributo UE Espandi tutto Riduci tutto Russian Academy of Sciences Russia Contributo UE Nessun dato Indirizzo 194021 St. Petersburg Mostra sulla mappa Costo totale Nessun dato Russian Academy of Sciences Russia Contributo UE Nessun dato Indirizzo 117334 Moscow Mostra sulla mappa Costo totale Nessun dato Technische Universiteit Eindhoven Paesi Bassi Contributo UE Nessun dato Indirizzo 5600 MB Eindhoven Mostra sulla mappa Costo totale Nessun dato
