Sensitization of Pr(III) ions in porous material via an antenna effect

Melek Özdaş Bütün


Metal organic frameworks (MOF) are porous materials which generally construct with ligands and metal ions.  Recently, most of studies in the field of photoluminescence properties of Ln(III) complexes have been focused on Eu(III), Tb(III), Dy(III) and Sm(III) compounds.  In according to our research; investigation of luminescence properties of  specially Pr(III) complexes are limited report in literature.  In this study, Pr(III)metal ion have been selected to form the metal organic frameworks.  Because of forbidden f–f transitions, direct excitation of lanthanide (III) ions is nearly impossible.  The sensitization of organic ligands is more effectively achieved a via antenna effect.  The significant design or selection of a suitable ligand play a key role in the building of 3D-MOFs because of to obtain excellent luminescence properties.  In this work, luminescence characteristics of the Pr-MOF complex both in visible and in NIR region and energy transfer mechanism have been investigated.

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