| 초록 |
Recently, EDFA are wide used in the field of optical telecommunication system. However, the amplification gain of current amplifiers is not enough for amplifying the optical signals in small-sized photonic devices. To maximize the optical amplification efficiency, we have investigated the design and synthesis of the erbium(III)-encapsulated dendritic supramolecules based on porphyrins and boron-dipyrrin (BDPY). Carboxy azacryptand was easily prepared by condensation of 3,5-dihydroxybenzoic acid and tris-(2-chloroethyl)amine hydrochloride in the presence of base or benzylic oxidation of azacryptand. Also, we synthesized the porphyrins bearing phenolic and dendritic (or BDPY) substituents at the meso-position from the corresponding aldehyde and pyrrole for the coupling with azacryptand. And, the desired supramolecules based on porphyrins have been synthesized by esterification of a carboxy azacryptand with functionalized porphyrins containing aryl ether-typed dendron. In this presentation, the synthetic routes and their optical properties of noveI erbium(III)-encapsulated dendritic supramolecules based on porphyrins and BDPY will be discussed. |
