Acta Phys. -Chim. Sin. ›› 1997, Vol. 13 ›› Issue (01): 56-59.doi: 10.3866/PKU.WHXB19970111

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Spectral Properties of Ultrafine Particles of Eu(DBM)3

Hu Lin-Xue,Wang Bao-Lan,Li Jian-Ping,Li Xiao-Qin,Li Hong-Bin   

  1. Department of Chemistry,Laboratory Center,Hubei University,Wuhan 430062
  • Received:1996-05-24 Revised:1996-08-19 Published:1997-01-15
  • Contact: Hu Lin-Xue


The colloids of Eu(DBM)3 and ultrafine particles Eu(DBM)3 were perpared. The particle sizes determined by X-ray and by TEM measurements were in 7-30nm range. Their UV absorption and fluorescence spectra were compared with each other and with those of the solid sample. It was shown that the 5D1→7 F1,2 transition was observed in the colloids of Eu(DBM)3 at room temperature. The increase of the excited-state S1 and T1 energy, the peak positions of UV absorption shifted to shorter wavelength, the changes of the absoprtion coefficient with decreasing size were observed.

Key words: Ultrafine particle, Eu(DBM)3, Fluorescence spectra