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| 惰性离子(La3+,Y3+,Gd3+)对配合物苯乙酮酸邻菲咯啉铕荧光性能的影响 | |
| 引用本文： | 张彦辉,颜剑波,阎晓琦,裴娟,耿啸天,赵莹,王云友,孙波.惰性离子(La3+,Y3+,Gd3+)对配合物苯乙酮酸邻菲咯啉铕荧光性能的影响[J].光谱学与光谱分析,2007,27(3):525-529. |
| 作者姓名： | 张彦辉 颜剑波 阎晓琦 裴娟 耿啸天 赵莹 王云友 孙波 |
| 作者单位： | 1. 南开大学化学学院材料化学系,天津,300071 2. 中国东港工贸集团公司,浙江,台州,318000 3. 中国科学院化学所高分子物理与化学国家重点实验室,北京,100080 |
| 摘 要： | 以苯乙酮酸和邻菲咯啉为配体,不同摩尔比铕和惰性离子(La3 ,Y3 ,Gd3 )为中心离子,合成了系列配合物EuxRE1-xL3phen(RE=La,Y,Gd),测定了其荧光激发光谱和荧光发射光谱,研究了惰性离子(La3 ,Y3 ,Gd3 )对Eu3 荧光性能的影响.结果表明,配合物激发光谱相似,均在350～360 nm范围内出现最大激发,属于配体的吸收峰,在398 nm附近出现弱的激发为Eu3 的吸收峰;系列配合物荧光发射光谱相似,均显示Eu3 离子的特征发射光谱,位于583,595,617,654,703 nm附近出现5组强度不同的发射峰,分别归属为Eu3 的5D0-7F0,5D0-7F1,5D0-7F2,5D0-7F3,5D0-7F4能级跃迁.发射光谱表明,系列配合物中La3 离子对Eu3 的荧光发射峰峰位影响最大,EuxLa1-xL3phen中La3 的摩尔分数为0.7时,Eu3 的5D0-7F2跃迁可改变5.2 nm,而Y3 和Gd3 对Eu3 的荧光发射峰峰位影响较弱,配合物EuxY1-xL3phen和EuxGd1-xL3phen中Eu3 的荧光发射峰位变化较小,最大时仅改变2 nm;发射光谱强度表明,La3 对Eu3 的荧光发射影响最大,EuxLa1-xL3phen中La3 含量为0.7时,可使其相对荧光强度增大2倍以上,对其具有很好的敏化作用.这对人们寻找发光性能好、价格便宜的发光材料提供了理论依据. |
| 关 键 词： | 铕 惰性离子 苯乙酮酸 邻菲咯啉 荧光光谱 |
| 文章编号： | 1000-0593（2007）03-0525-05 |
| 收稿时间： | 2005-12-01 |
| 修稿时间： | 2006-03-18 |
Influence of Inert Nuclei(La3+,Y3+ and Gd3+) on Fluorescence of Europium Complex with Phenylglyoxylic Acid and Phenathroline |
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| ZHANG Yan-hui,YAN Jian-bo,YAN Xiao-qi,PEI Juan,GENG Xiao-tian,ZHAO Ying,WANG Yun-you,SUN Bo.Influence of Inert Nuclei(La3+,Y3+ and Gd3+) on Fluorescence of Europium Complex with Phenylglyoxylic Acid and Phenathroline[J].Spectroscopy and Spectral Analysis,2007,27(3):525-529. | |
| Authors: | ZHANG Yan-hui YAN Jian-bo YAN Xiao-qi PEI Juan GENG Xiao-tian ZHAO Ying WANG Yun-you SUN Bo |
| Institution: | 1. Department of Materials Chemistry, College of Chemistry, 2. State Key Laboratory of Polymer Physics and Chemistry, Nankai University, Tianjin 300071, China Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China 3. China Dankong Industry and Trade Group Company, Taizhou 318000, China |
| Abstract: | Three series of dinuclear complexes (Eux RE(1-x) L3 phen) of phenylglyoxylic acid and phenathroline with different molar ratios of Eu3+ to inert nuclei (RE = La3+, Y3+ and Gd3+) were synthesized. Their excitation and emission spectra were studied. The excitation spectra showed that the optimum excitation wavelengths of the complexes are all in the range of 350-360 nm, which belong to the excitation peaks of ligands, and the weak excitation peak of Eu3+ is at about 398 nm; The emission spectra showed that there are five emission bands at about 583, 595, 617, 654 and 703 nm respectively for all the complexes, due to (5)D0 - (7)F0, (5)D0 - (7)F1, (5)D0 - (7)F2, (5)D0 - (7)F3 and (5)D0 - (7)F4 transitions of Eu3+ respectively. The authors also found that the emission peak positions of Eu3+ shift the most in the complexes Eu(x) La(1-x) L3 phen, the position of (5)D0 - (7)F2 transition shifts 5.2 nm when the molar ratio of Eu3+:La3+ is 0.3: 0.7, but the addition of Y3+ and Gd3+ makes the emission peak positions of Eu3+ change less than that of La3+. Meanwhile the luminescence intensity of Eu3+ can be most enhanced by La3+ in all the complexes. The conclusion we found in the present paper could help search the luminescence materials with low cost and good luminescence properties. |
| Keywords: | Europium~ Inert ion Phenylglyoxylic acid Phenathroline Fluorescence spectra |
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