Abstract
Organic compound with lanthanide complexes have been greatly researched for the advance of optical property and processibility to apply on optical amplifiers. We studied on lanthanide metal-dendritic porphyrin complex in solution state. Peripherally substituted carboxylic groups on G1 and G2 dendritic porphyrins were gradually occurred to form the precipitation with increasing Er3+ions in solution state. With increasing the amount of Er3+ions resulting complexes begin to form loosely cross-linked complexes causing precipitation in THF solution. No optical change of G2-Er complex was observed in the presence of large excess (10eq-100eq) of strong chelating ligand such as EDTA in THF solution, which is indicative that G2-Er is chemically very stable because of so-called dendritic chelating effect.
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