Preparation, Photoluminescent Behaviour, Antimicrobial and Antioxidant Properties of New Orange Light Emitting Sm(III) Complex, Sm(CHME)3.Dmphen
Keywords:
Laporte-Forbidden, Photoluminescent, Antimicrobial, Antioxidant, Sm(CHME)3.Dmphen, UV Region, IR Regions, Organic Chromophore Moiety, Β-Hydroxyketone, Β-Diketone, Carboxylic Acids, CHME, OLEDsAbstract
The photoluminescent properties of lanthanide complexes with organic ligand have been the subject of great interest as these functional complexes have potential applications in various fields from quantum cutting materials to photonic devices [1-13]. Most of these applications are based on the efficient emission of lanthanide complexes in the UV region to IR regions. However, the lanthanide ions have very low absorption coefficient which prevents direct excitation due to Laporte-forbidden 4f-4f transitions. To overcome this disadvantage and obtain intense lanthanide luminescence, there are two specific ways to sensitize lanthanide emission. Firstly, the use of metal ion in the heteromettalic system where energy can be transferred from the metal ion to lanthanide ion which results in enhanced luminescence of lanthanide ion. Secondly, to choose a suitable organic chromophore moiety which excite and transfers the energy to the lanthanide ion through antenna affects. For the second option numerous organic ligands such ?-hydroxyketone, ?-diketone, carboxylic acids and various heterocyclic derivatives have been introduced to develop and designed new luminescent lanthanide-based materials [14-20].
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