Effect of Rare Earth Yttrium on Temperature-sensitive Property of Eu(TTA)3 phen/PMMA
SONG Yajiao, YU Jia, WU Weibin, YU Hongcui, LIU Jinglin*
Inner Mongolia Key Laboratory of Chemistry for Natural Products and Synthesis for Functional Molecules, College of Chemistry and Materials Science, Inner Mongolia Minzu University, Tongliao 028000, Inner Mongolia, China
Abstract: The temperature sensitive paint (TSP) technology is widely used in the temperature distribution measurement of large area solid field, especially for the in-depth research in the mechanical behavior of complex flow gas around the aircraft, because of its advantages of non-contact, omni-directional measurement, easy manufacture and use. In this work, we synthesized the rare earth iron (Y3+) doped Eu(TTA)3 phen/PMMA temperature sensitive paint successfully based on the probe molecules of Y3+doped Eu(TTA)3phen and polymethyl methacrylate(PMMA). The structure of probe molecules and the fluorescence properties of TSP were also characterized. The result show that the optimal ratio of rare earth ions is 0.5∶0.5, both of rare earth irons are coordinated with ligands and the doping of Y3+ do not affect the structure of Eu(TTA)3 phen. Y3+ has a gain effect on the fluorescent emission of Eu(TTA)3 phen/PMMA and the intensity of the strongest fluorescence emission peak (616 nm) is decreased with the increasing of temperature, which indicate that the Y3+ doped Eu (TTA)3phen/PMMA have temperature quenching properties in the temperature range of 40—80 ℃. What’s more, the doping of Y3+ can improve the change rate of the fluorescent intensity and the temperature measurement sensitivity. Hence, as a new thermal sensitive material, the Y3+ doped Eu(TTA)3phen/PMMA temperature sensitive paint has potential applications in photoelectric devices and other aspects.
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2023, Vol. 37 
