凝胶玻璃中原位合成铕-铽-钆-六氟乙酰丙酮三元配合物的发光性能研究

稀土配合物掺杂无机玻璃的发光性质在光学器件和生物医学等领域有着重要应用，引起人们广泛关注。采用原位合成技术，在凝胶玻璃中合成并光学均匀掺杂了铕-铽-钆-六氟乙酰丙酮(HFA)三元配合物Eu_1/2-xTb_1/2-xGd_2x(HFA)₃(TPPO)2(x=0或1/18;TPPO：三苯基氧化磷);研究了含配合物凝胶玻璃的发光性能及铽、钆离子掺杂对铕离子发光性能的影响。凝胶玻璃显示铕和铽离子的特征发光，并观察到了基于声子支助的钆(周围配体)到铽、铕和铽到铕的能量转移，铕和铽离子的发光强度随测试温度改变而改变，该性质在温度探测器、生物探针、光纤传感器的热敏探针等多种领域具有重要的应用。

Photoluminescence Properties of Europium-Terbium-Gadolinium-Hexafluoroacetylacetone Ternary Complexes Synthesized in-situ in Gel Glass

The luminescence property of the inorganic glass doped with rare earth complex has aroused a wide range of attention for a variety of technological applications such as optical devices,biomedicine,etc. In the present work,the ternary complexes of europium-terbium-gadolinium with hexafluoroacetylacetone (HFA) and triphenylphoshine oxide (TPPO),Eu_1/2-xTb_1/2-xGd_2x(HFA)3(TPPO)2 (x=0 or 1/18),were synthesized in-situ in gel glasses to obtain transparent materials. The photoluminescence (PL) spectra were measured and the characteristic transitions of Eu3+ and Tb3+ observed. Due to the phonon assisted energy transfer between Gd3+ (bonding ligands),Tb3+ and Eu3+,the intensity ratios of europium luminescence band to terbium band vary remarkably with the measurement temperatures. In addition,the Frster mechanism has proven responsible for the energy transfer between Eu3+ and Tb3+. The complex-doped gel glass whose luminescence color changes with temperatures is promising for being used as temperature detector,biological probe and thermal-sensitive probe of optical fiber sensor.