This article presents an overview of the work that has been done recently in our laboratory concerning the development and application of new conjugated materials with tunable properties. We have designed polymers containing oligo(phenylenevinylene)-type conjugated segments of well defined size and structure isolated either in their main-chain or in the side-chains. Model oligomers corresponding to the conjugated parts of the polymers have also been studied. We show how these materials perform in light-emission applications (light-emitting diodes, lasers) or photovoltaic cells.
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