Synthesis and spectroscopic properties of monocyclic and bicyclic erbium phtalocyanines

Synthesis and spectroscopic properties of monocyclic and bicyclic erbium phtalocyanines Bimacrocyclic and monomacrocyclic erbium phtalocyanines have been synthesized and their luminescence spectra and lifetimes have been studied. The bi-planar structure of ErPc2 complexes, although interesting at first sight, is non-luminescent because of a strong absorption band near 1.5 μm. However, the luminescence of the erbium ion can be recovered after oxidation or reduction of the macrocycle. Monomacrocyclic erbium phtalocyanines exhibit a strong luminescence of erbium as a result of the energy transfer between the excited phtalocyanine macrocycle and the erbium ion. With a perchlorinated phtalocyanine and a perdeuterated axial ligand in a deuterated solvent, the luminescence lifetime reaches 5 μs, which is the maximum lifetime found for conventional perdeutarated ligands. The large absorption cross-section of phtalocyanine in the red may counterbalance the fast luminescence lifetime, allowing the hope for a new all-organic integrated optical amplifier device. Research on Chemical Intermediates Springer Journals

Synthesis and spectroscopic properties of monocyclic and bicyclic erbium phtalocyanines

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Springer Netherlands
Copyright © 2008 by Springer
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
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