Novel Synthetic Approaches to Chlorins via Selective Porphyrin Reduction
Sprache des Vortragstitels:
31st National Chemistry Congress (Ulusal Kimya Kongresi), Istanbul, Turkey, 2019
Sprache des Tagungstitel:
Chlorins are red-light harvesting macrocyclic ligands with an aromatic 18?-electron conjugated tetrapyrrole core.
This type of chromophore is also common to one of the most abundant classes of porphyrinoid pigments occurring in nature - the chlorophylls. While all chlorins share the same basic 18-annulene motif with the porphyrins, one of their pyrrole-ring double bonds is reduced, which typically results in a deep green colour. In the present study, we employed a novel synthetic approach using a hydrogenating compound for the synthesis of chlorins via porphyrin reduction. The procedure turned out to avoid any unproductive reoxidation back to the porphyrin level with high selectivity. The obtained chlorin compounds were characterized
by different spectroscopic techniques and also further examined in the context of potential photocatalytic activities in the fields of artificial photosynthesis and solar-driven biomimetic chemistry.