| 稀土(Gd3+,La3+)对Eu(p-MOBA)3phen/PMMA荧光及温敏特性的影响 |
| Effects of Rare Earths (Gd3+, La3+) on Fluorescence and Temperature Sensitivity of Eu(p-MOBA)3phen/PMMA |
| 作者 | 单位 | E-mail | | 唐娟 | 长春理工大学化学与环境工程学院, 吉林省光学材料与化学科技创新中心, 中俄光学材料与化学联合实验室, 长春 130022 | | | 孙晶 | 长春理工大学化学与环境工程学院, 吉林省光学材料与化学科技创新中心, 中俄光学材料与化学联合实验室, 长春 130022 | sj-cust@126.com | | 周晨 | 长春理工大学化学与环境工程学院, 吉林省光学材料与化学科技创新中心, 中俄光学材料与化学联合实验室, 长春 130022 | | | 赵莹 | 长春理工大学化学与环境工程学院, 吉林省光学材料与化学科技创新中心, 中俄光学材料与化学联合实验室, 长春 130022 | | | 郭欣 | 长春理工大学化学与环境工程学院, 吉林省光学材料与化学科技创新中心, 中俄光学材料与化学联合实验室, 长春 130022 | | | 尹雨婷 | 长春理工大学化学与环境工程学院, 吉林省光学材料与化学科技创新中心, 中俄光学材料与化学联合实验室, 长春 130022 | |
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| 摘要: 以稀土氧化物（Eu2O3，Gd2O3，La2O3）、对甲氧基苯甲酸（p-MOBA）、菲咯啉（phen）为原料制备了不同稀土离子（Gd3+，La3+）掺杂的Eu（p-MOBA）3phen探针分子。将所合成的探针分子与甲基丙烯酸甲酯（MMA）混合，以过氧化苯甲酰（BPO）为引发剂引发聚合，制得不同稀土（Gd3+，La3+）掺杂的Eu（p-MOBA）3phen/PMMA温敏漆样品。利用扫描电镜、紫外-可见吸收光谱、红外光谱和荧光光谱对探针分子的形貌、结构、发光性能及温敏漆的荧光温度猝灭特性进行表征。红外光谱、紫外可见吸收光谱及扫描电镜能谱分析表明，Eu3+与配体p-MOBA、phen成功配位，且掺入的稀土离子（Gd3+，La3+）未改变Eu（p-MOBA）3phen结构，说明掺入的稀土离子（Gd3+，La3+）部分取代了Eu3+。荧光光谱表明，稀土离子（Gd3+，La3+）的掺入对Eu（p-MOBA）3phen的发光均具有增益作用，并且相应的温敏漆在50~100℃温度范围内都具有良好的荧光温度猝灭特性。而且相比于镧掺杂的Eu（p-MOBA）3phen/PMMA，钆掺杂的Eu（p-MOBA）3phen/PMMA具有更强的荧光发射和更高的测温灵敏度。可见，不同的稀土（Gd3+，La3+）对Eu（p-MOBA）3phen/PMMA的荧光及温敏特性影响是不同的。 |
| 关键词: 稀土 温敏漆 探针分子 荧光 温度猝灭 |
| 基金项目: 吉林省教育厅项目（No.JJKH20190540KJ）资助。 |
| Abstract: The different rare earth (Gd3+, La3+) doped Eu(p-MOBA)3phen probe molecules were prepared by using rare earth oxides (Eu2O3, Gd2O3, La2O3), p-methoxybenzoic acid (p-MOBA) and phenanthroline (phen). The different rare earth (Gd3+, La3+) doped Eu(p-MOBA)3phen/PMMA temperature sensitive paints (TSPs) were fabricated by mixing the probe molecules with methyl methacrylate (MMA) and initiating polymerization with benzoyl peroxide (BPO). The morphology, structure, luminescence properties of the probe molecules, and the fluorescence temperature quenching property of the TSPs were characterized by scanning electron microscopy, UV-Vis absorption spectra, infrared spectrometer and fluorescence spectra. The infrared spectrum, UV-Vis absorption spectra and scanning electron microscopy spectra show that Eu3+ was successfully coordinated with the ligands p-MOBA and phen, and the structure of Eu(p-MOBA)3phen was not changed when doped with rare earth ions (Gd3+, La3+), indicating that the doping of rare earth ions (Gd3+, La3+) partially replaced Eu3+. The fluorescence spectrum shows that the addition of rare earth ions (Gd3+, La3+) have a gain effect on the luminescence of Eu(p-MOBA)3phen, and the corresponding TSPs have good fluorescence temperature quenching property in the temperature range of 50~100℃. Compared with La3+ doped Eu(p-MOBA)3phen/PMMA, Gd3+ doped Eu(p-MOBA)3phen/PMMA has stronger fluorescence emission and higher temperature sensitivity. It can be seen that different rare earths (Gd3+, La3+) have different effects on the fluorescence and temperature sensitivity properties of Eu(p-MOBA)3phen/PMMA. |
| Keywords: rare earth temperature sensitive paint probe molecule fluorescence temperature quenching |
| 投稿时间：2020-04-07 修订日期：2020-04-22 |
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| 唐娟,孙晶,周晨,赵莹,郭欣,尹雨婷.稀土(Gd3+,La3+)对Eu(p-MOBA)3phen/PMMA荧光及温敏特性的影响[J].无机化学学报,2020,36(8):1485-1491. |
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