机构地区: 暨南大学生命科学技术学院化学系
出 处: 《无机化学学报》 2005年第5期643-646,共4页
摘 要: 通过水热反应法,获得了单掺和双掺Eu3+,Gd3+的多孔二氧化硅组装体,研究了掺杂体系的光谱特性,观察到Gd3+→Eu3+的能量传递。分析了能量传递过程,探讨了在多孔二氧化硅中Gd3+→Eu3+的能量传递的机理,其机理主要为电偶极鄄电偶极相互作用。 Eu3+ or Gd3+ doped P-SiO2 and two ions co-doped P-SiO2 were synthesized by hydrothermal method. Under the excitation of ultraviolet light the spectral behaviour and the composition dependence on luminescence properties of Eu3+ and Gd3+ in P-SiO2 were studied. The energy transfer of Gd3+ → Eu3+ in P-SiO2 was observed. Energy transfer process and mechanism are analysised, the mechanism of energy transfer from Gd3+ to Eu3+ is a resonant transfer, in which electric dipole-dipole interaction plays a leading role.