Molecular distortion effect on ff-emission in a Pr(III) complex with 4,7-diphenyl-1,10-phenanthroline

Ayumi Ishii, Shinobu Kishi, Hideki Ohtsu, Toshifumi Iimori, Takakazu Nakabayashi, Nobuhiro Ohta, Naoto Tamai, Milan Melnik, Miki Hasegawa, Yuzo Shigesato

研究成果: Article査読

12 被引用数 (Scopus)

抄録

The electronic and structural behaviour of a Pr(III) complex with 4,7-diphenyl-1,10-phenanthroline, [PHbathophen)2NO3) 3], is investigated with respect to the effect of configuration changes on the Pr(III) centre. [Pr(bathophen)2(NO3) 3] luminesces from the excited states of the ligand and the metal ion. The fluorescence, ff-emission (1D23H4), and phosphorescence bands appear at 394, 608.2 and 482 nm, respectively, in the solid state. In acetonitrile, the complex also shows multiple emissions. From the time-resolved emission and the lifetime measurements, the excitation energy-transfer in [Pr(bathophen) 2(NO3)3] is clarified, that is, the upper excited triplet level of the ligand acts as an energy donor, while the 1D2 levels of Pr(III) is the acceptor. Additionally, the emission phenomena of the complex can be modified by molecular distortion, particularly by rotation of the phenyl groups in the ligand.

本文言語English
ページ(範囲)1345-1351
ページ数7
ジャーナルChemPhysChem
8
9
DOI
出版ステータスPublished - 2007 6 25
外部発表はい

ASJC Scopus subject areas

  • 原子分子物理学および光学
  • 物理化学および理論化学

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