Bulletin of the Korean Chemical Society

  • 제26권12호
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  • Pages.1969-1974
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  • 2005
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  • 0253-2964(pISSN)
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  • 1229-5949(eISSN)
대한화학회 (Korean Chemical Society)
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Photoluminescent Properties of Eu(III) in the Composite Heterocyclic Ligands/Crown Ether Systems

  • Liu, Hong Guo (Department of Chemistry, Changwon National University) ;
  • Jang, Ki-Wan (Department of Physics, Changwon National University) ;
  • Feng, Xu Sheng (Key Laboratory for Colloid & Interface Chemistry of Education Ministry, Shandong University) ;
  • Kim, Chang-Dae (Department of Physics, Mokpo National University) ;
  • Yoo, Young-Jae (Department of Chemistry, Changwon National University) ;
  • Lee, Yong-Ill (Department of Chemistry, Changwon National University)
  • 발행 : 2005.12.20
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초록

Composite systems of $Eu(phen)_2Cl_3{(H_2O)}_2$, Eu(DN-bpy)$(phen)Cl_3{(H_2O)}_2$ and Eu(DB-bpy)$(phen)Cl_3{(H_2O)}_2$ (DNbpy: $4,4^\prime$-Dinonyl-$2,2^\prime$-dipyridyl; DB-bpy: $4,4^\prime$-Di-tert-butyl-$2,2^\prime$-dipyridyl) with crown ethers of Benzo-15-crown-5 (B15C5), Benzo-18-crown-6 (B18C6), 18-crown-6 (18C6), Dibenzo-18-crown-6 (DB18C6) and Dibenzo-24-crown-8 (DB24C8) were fabricated successfully and characterized by using photoluminescent spectroscopy and luminescent lifetime measurements. All composites formed show high luminescence mainly in red region. It was found that the heterocyclic ligands such as phen, DN-bpy and DB-bpy as well as the crown ethers have great influences on the photoluminescent properties of $Eu^{3+}$ ion. The environment around $Eu^{3+}$ ion in the composite systems changes greatly,presumably the variation of the first coordination sphere. The $Eu^{3+}$ ion occupies higher symmetrical environment and in more than one kind of symmetrical site in the composite systems studied in this work.

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참고문헌

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