- P-ISSN 1225-0163
- E-ISSN 2288-8985
3종의 8배위 터븀 착화합물 [tris (2-pyrazinecarboxylato) (phenanthroline) terbium (III), tris (5-methyl-2-pyrazinecarboxylato) (phenanthroline) terbium(III) 및 tris (2-picolinato) (phenanthroline) terbium (III)]을 합성하고, 이 화합물을 FT-IR, UV 및 XPS 사용하여 특성평가 하였다. 또한, PL 스펙트라를 통하여 합성된 터븀 착화합물은 강한 녹색 형광을 방출하는 것을 확인하였으며, 시간 분해 분광분석기를 통하여 합성된 터븀 착화합물의 형광 반감기가 0.87 ms 및 1.0 ms임을 알았고, 열분석을 통하여 합성된 터븀 착화합물의 열안정성은
Eight coordinated terbium(III) complexes, tris (2-pyrazinecarboxylato)(phenanthroline) terbium(III)[Tb (pzc)3(phen)], tris (5-methyl-2-pyrazinecarboxylato) (phenanthroline) terbium(III) [Tb(mpzc)3(phen)] and tris(2-picolinato) (phenanthroline) terbium(III) [Tb(pic)3(phen)], have been synthesized and characterized by Fourier transform infrared (FT-IR), UV-Visible and X-ray photoelectron spectroscopy. Photoluminescence (PL)spectroscopy shows that these complexes emitted strong green luminescence. When powder samples of the Tb3+complexes are examined using time-resolved spectroscopic analysis, the luminescence lifetimes are found to be 0.87 ms and 1.0 ms, respectively. Thermogravimetric analysis reveals the terbium complexes to have good thermal stability up to 333-379 °C. Cyclic voltammetry shows that HOMO-LUMO energy gap of the Tb^(3+)complexes ranges from 4.26~4.41 eV. These values are similar to those obtained from the UV-visible spectra. Overall, the synthesized Tb^(3+) complexes may be useful advanced materials for green light emitting devices.