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No 28 / 62

Study on electrically conducting polymers and their application in optical devices and in sensors

Date: 1.9.1997-
Code: 8771
Department: Åbo Akademi University / Faculty of Chemical Engineering (KTF), Laboratory of Analytical Chemistry
Address: Biskopsg. 8, FIN-20500 Åbo
Phone +358-2-2154 419
Fax +358-2-2154 479
E-mail ckvarnst@abo.fi
Project leader: FD Carita Kvarnström, Assistent (1.9.1997-)
Researchers: FM Pia Damlin (1.9.1997-)
FM Susanna Blomqvist (1.9.1997-)
Type of research: 0 (0=Within duty, 1=Ordered research, 2=Co-operation)
- basic research 70 %
- applied research 30 %
Finnish funding organizations: Finlands akademi, Helsingfors () FIM
Svenska Tekniska Vetenskapsakademin () FIM 120000
Man months: 7 months in 1998; Totally: 15 months
Contacts: Consortium "Material Research", Finlands Akademi, Helsingfors
Keywords: elektrokemi, polymer, optiska instrument, sähkökemia, polymeeri, optiset laitteet, ledande polymerer, elektrokemi, spektroelektrokemi, electrically conducting polymers, electrochemistry, spectroelectrochemistry,

The research plan covers the electrochemical and spectroelectrochemical studies on different conducting polymers having high potential in light-emitting diodes and in sensor applications.Efforts will be made to prepare materials with well known redox behaviour, structure and morphology suitable for the different applications.Using electrochemical synthesis routines the different polymerization parameters as concentration of starting material, solvent, salt, current density, temperature etc. can be efficiently tuned to give certain tailored polymer structures.The polymers in question are poly(paraphenylene), PPP, poly(paraphenylenevinylene), PPV, different poly(3-alkylthiophenes), PAT and poly(3,4-ethylenedioxythiophene), PEDOT.Specific goals in this research project are to maximize and combine the properties of different conducting polymers by combining them in bilayer and multilayer structures.In this project different electrochemical techniques will be used to study the electrochemical synthesis and the redox reaction of the polymer electrodes.The techniques applied are cyclic voltammetry, in situ external and internal specular reflection FTIRS, impedance spectroscopy, quartz crystal microbalance measurements, ESR-spectroscopy and UV-VIS spectroscopy.Due to the complicity involved in many of the techniques (special cell set-ups needed and problems involved by combining two techniques for in situ recording the project would gain from combining the skills and expertise in the two groups proposed.

Publication(s)

14.2.1996 / 30.10.1997