Several tasks were carried out in LEPDICT’s 1st stage (2020, 2 months): (i) the synthesis / acquisition of precursors, intermediates, monomers with specific optical features; (ii) purification of solvents and reagents, precursors, intermediates, monomers (if necessary); (iii) physico-chemical evaluation of the resulting compounds.

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Two organic compounds (and necessary intermediates) were synthesized and will be further used (in the 2nd stage) as monomers/building blocks for the construction of active polymers in the blue color domain: an aromatic oxadiazole derivative with amino terminal groups, and a dibromide-based derivative of fluorene substituted with nitrile end units.

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These complex emissive species have undergone the necessary steps of purification and physico-chemical characterization, with emphasis on structural investigation and confirmation, processability (in terms of solubility / compatibility with other complex emissive building blocks and / or preparation methods of envisaged macromolecular compounds) and photo-optical behavior (light emission of a certain color). The evaluation of the luminescent traits confirmed the successful achievement of the main key goal of this stage: the preparation of complex emissive entities capable of emitting blue light, which can be used later in the synthesis of complex macromolecular architectures with photoluminescent activity. Given its difficulty, this task will be continued in the next stage (2021) of the project, to develop other complex emissive components, to serve the same function.

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A LEPDICT-dedicated website was also created, being hosted on the official website of the coordinating institution (ICMPP). It aims to contribute to LEPDict’s visibility and to be a versatile dissemination tool during and post-implementation.