Défense de thèse de doctorat en sciences chimiques
Peripheral O-annulation of porphyrin macrocycles
Date : 07/12/2018 15:30 - 07/12/2018 17:30
Lieu : Amphithéâtre M21, rue Grafé, 5, 5000 Namur
Orateur(s) : Dmytro BILOBORODOV
Organisateur(s) : Davide BONIFAZI
Jury
Luigi VACCARO (University of Perugia), Angela SASTRE-SANTOS (University of Elche), Stéphane VINCENT (UNamur), Davide BONIFAZI (UNamur) promoteur, Guillaume BERIONNI (UNamur) président
Résumé
Extended π-conjugated systems are the focus of intense research in constructing nanostructured molecular devices as they exhibit peculiar optoelectronic properties directly ensuing from the HOMO-LUMO bandgap energy of the molecule. The unique ability to the precise tuning of these properties through the functionalization of the molecular periphery (e.g. chain length, planarity of the conjugated paths, heteroatom insertion etc.) enables controllable manipulation of structure-properties relationship. Among a variety of π-conjugated molecules, porphyrins are of particular interest for their application in material science due to their advantageous properties, such as photostability, visible-light absorption, low energy excited states and high molar extinction coefficients.
The main objective of this work was to design novel π-extended O-embedded porphyrins in order to examine and better understand the relationship between their structure and emerged properties. Four generations of O-fused porphyrins with a different number of pyran rings in each case, were studied delving into their synthesis and physicochemical features.
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