| 초록 |
The organic lanthanide complexes have been of great interest due to their potential applications, such as organic light-emitting diode (OELD), optical amplifiers, plastic lasers. In recent fiber optictelecommunications, erbium-doped fiber amplifier (EDFA) have been utilized in long distance fiber communication. In order to enhance the amplified luminescence intensity, the development of luminescent lanthanide complexes based on the energy transfer mechanism by using the complexes has been extensively studied. In most cases, luminescent lanthanide complexes consist of a lanthanide ions and a chelating luminescent ligand which acts as a sensitizer that transfers excitation energy to the encapsulated lanthanide ions; the presence of the luminescent ligand overcomes the lanthanide ion’s intrinsically low luminescence intensity by direct excitation of the lanthanide ion. Very recently, we have successfully designed and synthesis luminescent lanthanide complexes based anthracene derivatives containing long alkyl units. To achieve site isolation of Ln3+ ions, lanthanoid ions were surrounded by the anthracene derivatives containing long alkyl unit. The anthracene ligands have been designed and synthesized in order to provide enough coordination sites for the formation of stable Er(Ⅲ)-chelated complexes. Lanthanide ions were effectively encapsulated by anthracene ligands. In this presentation, we will describe the synthesis and photophysical properties of novel lanthanide-cored complexes base on anthracene derivatives containing long alkyl units for advanced photonics applications. |
