Multiple Energy Transfers in Rare Earth Complex-Doped SiO2 Spheres

Multiple Energy Transfers in Rare Earth Complex-Doped SiO2 Spheres

O482.3%O614.33; Silica spheres doped with Eu(TTFA)3 and/or Sm(TTFA)3 were synthesized by using the modified Stber method.The transmission electron microscope image reveals that the hybrid spheres have smooth surfaces and an average diameter of about 210 nm.Fluorescence spectrometer was used to anal...

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Veröffentlicht in:Journal of rare earths 2006, Vol.24 (2), p.134-137
Hauptverfasser: Huang, Changqing, Sun, Ting, Tian, Weijian, Zhao, Baoping
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container_title Journal of rare earths
container_volume 24
creator Huang, Changqing
Sun, Ting
Tian, Weijian
Zhao, Baoping
description O482.3%O614.33; Silica spheres doped with Eu(TTFA)3 and/or Sm(TTFA)3 were synthesized by using the modified Stber method.The transmission electron microscope image reveals that the hybrid spheres have smooth surfaces and an average diameter of about 210 nm.Fluorescence spectrometer was used to analyze the fluorescence properties of hybrid spheres.The results show that multiple energy transfer processes are simultaneously achieved in the same samples co-doped with Eu(TTFA)3 and Sm(TTFA)3, namely between the ligand and Eu3+ ion, the ligand and Sm3+ ion, and Sm3+ ion and Eu3+ ion.Energy transfer of Sm3+→Eu3+ in the hybrid spheres leads to fluorescence enhancement of Eu3+ emission by approximately an order of magnitude.The lifetimes of the hybrid spheres were also measured.
doi_str_mv 10.1016/S1002-0721(06)60080-X
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Silica spheres doped with Eu(TTFA)3 and/or Sm(TTFA)3 were synthesized by using the modified Stber method.The transmission electron microscope image reveals that the hybrid spheres have smooth surfaces and an average diameter of about 210 nm.Fluorescence spectrometer was used to analyze the fluorescence properties of hybrid spheres.The results show that multiple energy transfer processes are simultaneously achieved in the same samples co-doped with Eu(TTFA)3 and Sm(TTFA)3, namely between the ligand and Eu3+ ion, the ligand and Sm3+ ion, and Sm3+ ion and Eu3+ ion.Energy transfer of Sm3+→Eu3+ in the hybrid spheres leads to fluorescence enhancement of Eu3+ emission by approximately an order of magnitude.The lifetimes of the hybrid spheres were also measured.</abstract><pub>Graduate School of the Chinese Academy of Sciences, Beijing 100039, China</pub><doi>10.1016/S1002-0721(06)60080-X</doi><tpages>4</tpages></addata></record>
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