Synthesis and Luminiescence of Eu(Ⅲ) Complex Based on 4,4,4- Trifluoro-1-(4’-m-Terphenyl)-1,3-Butanedione and 1,10-Phenanthroline
LIU Sheng-gui1，2, LIN Cheng-you1, WANG Hui-hui1, HE Pei1, GONG Meng-lian1
1. School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China 2. School of Chemistry Science and Technology, Zhanjiang Normal University and Development Center for New Materials Engineering & Technology at Universities of Guangdong, Zhanjiang 524048, China
Abstract：A new europium (Ⅲ) complex, EuL3phen, was synthesized. Its structure was characterized by elemental analysis, IR and FAB-MS. The complex exhibits strongly red emission due to the 5D0—7FJ(J=0-4) transitions of Eu3+ ions under irradiation of UV or 395 nm emission light of InGaN chip. The strongest emission peak is located at 613 nm. The luminescence quantum yield is13%. The lifetime of the complex is 470 μs. The decay curve can be fit with a single exponential. The thermogravimetric analyses curve for the complex shows that the complex is stable up to 220 ℃, which meets the requirement of fabrication of LED device. A red luminescent LED was successfully fabricated by coating complex EuL3phen onto 395 nm emitting InGaN chip. The mass ratio of complex to the silicone is related to the chromaticity coordinates and efficiency of fabricated LED. When the mass ratio of complex to the silicone is 1∶25，the chromaticity coordinates of the fabricated LED with the europium complex are x=0.64 and y=0.35 and the efficiency achieves 0.89 lm·W-1. The results indicate that the complex may act as a potential red component in the fabrication of white LEDs.
刘生桂1，2, 林城右1，王慧慧1，何 沛1，龚孟濂1 . 4,4,4-三氟-1-(4’-间三联苯基)-1,3-丁二酮邻菲咯啉铕(Ⅲ)配合物的合成与发光[J]. 光谱学与光谱分析, 2010, 30(03): 612-615.
LIU Sheng-gui1，2, LIN Cheng-you1, WANG Hui-hui1, HE Pei1, GONG Meng-lian1 . Synthesis and Luminiescence of Eu(Ⅲ) Complex Based on 4,4,4- Trifluoro-1-(4’-m-Terphenyl)-1,3-Butanedione and 1,10-Phenanthroline. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(03): 612-615.
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