Photoluminescence and Molecular Structure of Tetrakis(<i>N</i>,<i>N</i>-dimethyldithiocarbamato)europate(III)

• Takeshi Kobayashi

  Research Laboratory of Resources Utilization, Tokyo Institute of Technology4259 Nagatsuta, Midori-ku, Yokohama

• Haruo Naruke

  Research Laboratory of Resources Utilization, Tokyo Institute of Technology4259 Nagatsuta, Midori-ku, Yokohama

• Toshihiro Yamase

  Research Laboratory of Resources Utilization, Tokyo Institute of Technology4259 Nagatsuta, Midori-ku, Yokohama

抄録

Photoexcitation of the sulfur(S)-to-europium(Eu) charge-transfer bands in Na[Eu(S2CNMe2)4]·3.5H2O at the low temperature (&lt; 100 K) leads to the 5D0→7FJ (J = 0–4) luminescence of Eu3+ as a result of the energy transfer to the 5D0 state. The luminescence and excitation spectra reveal the dithiocarbamato-ligand phonon-assisted electronic transition involved in the small energy gap (∼1800 cm−1) between the 5D1 and 5D0 levels. The luminescence lifetime (0.11 ± 0.01 ms at 4.2 K) decreases with increasing temperature, probably due to the thermal crossover relaxation from 5D0 to the S→Eu charge transfer states.

収録刊行物

• Chemistry Letters

  Chemistry Letters 26 (9), 907-908, 1997-09-01

  Oxford University Press (OUP)

キーワード

• General Chemistry

詳細情報

• CRID: 1360283694086125184
• NII論文ID: 10002614916
• NII書誌ID: AA00603318
• DOI: 10.1246/cl.1997.907
• ISSN: 13480715
• ISSN: 03667022
• Web Site: https://academic.oup.com/chemlett/article-pdf/26/9/907/56074057/cl.1997.907.pdf
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