Podanden, Coronanden und Kryptanden als neue Komplex-Liganden für Photoelektronentransfer-Reaktionen Synthese und erste photophysikalische Studien / Podands, Coronands and Cryptands as New Complex-Ligands in Photoeleetron Transfer Reactions Synthesis and Photophysical Studies

Podands, coronands and cryptands containing 2,2′-bipyridine-units were synthesized. These Compounds can be used as ligands in Ru(II)-polypyridinecomplexes. This new route principally allows the preparation of tris-heteroleptic complexes using the appropriate cryptands. Ru(II)- polypyridines RuL₃²⁺ (e.g. Ru(bpy)₃²⁺) are interesting as sensitizers in photochemical water cleavage. Compared to Ru(bpy)₃²⁺, the photoanationrate should be reduced in the Ru(cryp)²⁺ complex.