- 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 <TEX>$333-379^{\circ}C$</TEX> 나타내는 것을 확인하였다. CV를 통하여 합성된 터븀 착화합물의 경우 HOMO-LUMO 에너지 차이가 4.26~4.41 eV를 나타냈는데, 이것은 UV-visible 스펙트라에서 얻은 값과 유사한 값임을 확인하였다. 따라서, 제조된 터븀 착화합물은 초록색을 발광하는 디바이스 재료로 사용할 수 있다.
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.
1. J. Kido, K. Nagai and Y. J. Okamato, Alloys Compds., 192, 30-33 (1993).
2. X. Zhang, R. Sun, Q. Zheng, T. Koboyashi and W. Li, Appl. Phys. Lett., 71, 2596-2598 (1997).
3. H. J. Kim, J. E. Lee, Y. S. Kim and N. G. Park, Opt. Mater., 21, 181-186 (2002).
4. J. Guo, L, Fu, H. Li, Y. Zheng, Q. Meng, S. Wang, F. Liu, J. Wang and H. Zhang, Mater. Lett., 447, 1 (2003).
5. H. J. Zhang, L. S. Fu, S. B. Wang, Q. G. Meng, K. Y. Yang and J. Z. Ni, Mater. Lett., 38, 260-264 (1999).
6. Q. Li, T. Li and J. Wu, J. Phys. Chem. B, 105, 12293-12296 (2001).
7. L. R. Melby, N. J. Rose, E. Abramson and J. C. Caris, J. Am. Chem. Soc., 86, 5117-5125 (1964).
8. J. Kido and Y. Okamato, Chem. Rev., 102, 2357-2368 (2002).
9. Y. Zheng, C. Shi, Y. Liang, Q. Lin, C. Guo and H. Zhang, Synth. Met., 114, 321-323 (2000).
10. I. Grenthe, J. Am. Chem. Soc., 83, 360-364 (1961).
11. J. M. Harrowfield, Y. Kim, B. W. Skelton and A. H. White, Aust., J. Chem., 48, 807-823 (1995).
12. B. L. An, Y. F. Luo, J. Q. Ye, K. C. Mai, J. X. Shi and M. L. Gong, J. Chin. Rare Earth Soc., 19, 268-272(2001).
13. R. W. Matthew and R. A. Walton, Inorg. Chem., 10, 1433-1438 (1971).
14. W. Bo and M. Hongzhu, Inorg. Chem. Comm., 3, 243-247 (2000).
15. G. L. P. Bernig and H. C. Swart, Appl. Surf. Sci., 78, 339-343 (1994).
16. J. M. Ouyang, W. J. Zheng, N. X. Huang and Z. H. Tai, Thin Solid Films, 340, 257-261 (1999).
17. L. Hongzhi, D. Patrick and K. Wei, Chem. Phys. Lett., 273, 272-278 (1997).
18. R. C. Hirt, Spectrochim. Acta., 12, 114-126 (1958).
19. X. G. Gao, C. Hong and C. H. Huang, Synth. Met., 99, 127-132 (1999).
20. K. Binnemans and C. Gorller-Walrand, Chem. Phys. Lett., 235, 163-174 (1995).
21. S. Sato and M. Wada, Bull. Chem. Soc. Jpn., 43, 1955-1962 (1970).
22. M. Latva, H. Takalo, V.-M. Mukkala, C. Matachescu, J.C. Rodriguez-Ubis and J. Kankare, J. Lumin., 75, 149-169 (1997).
23. N. Sabbatini, M. Guardigli and J. M. Lehn, Coord. Chem. Rev., 123, 201-228 (1993).
24. S. I. Klink, L. Grave, D. N. Reinhoudt, F. C. J. M. van Veggel, M. H. V. Werts, F. A. J. Geurts and J. W. Hofstraat, J. Phys. Chem. A, 104, 5457-5468 (2000).
25. X. Jiang, A. K. Jen, D. Huang and G. D. Phelan, Synth. Met., 125, 331-3366 (2002).
26. K. Okada, Y. F. Wang and T. Nakaya, Synth. Met., 97, 113-116 (1998).
27. Y. Zheng, J. Lin, Y. Liang, Q. Lin, Y. Yu, S. Wang, C. Guo and H. Zhang, Opt. Mat., 20, 273-278 (2002).
28. N. Arnaud and J. Georges, Spectrochim. Acta A., 59, 1829-1840 (2003).