A new series of radical-triplet pairs: Modulation of radical-triplet interaction by a counter ion

Luca Maretti, Islam S.M. Saiful, Takashi Kajiwara, Ryo Miyamoto, Yasunori Ohba, Seigo Yamauchi

研究成果: Article査読

抄録

Bis-(quinoline-TEMPO)-yttrium-tetraphenylporphyrin complexes having potassium and silver counter cations have been studied by cw-EPR in their ground states and by time-resolved (TR) EPR and two-dimensional (2D) nutation spectroscopy in the excited states after laser excitation. Simulations of the TR-EPR spectra at 30K and at room temperature were made, yielding zero-field splitting parameters D and E, and g values. The parameters obtained together with the nutation frequencies clearly assigned the excited states of the bis-radical complexes having counter cations of potassium and silver as quartet and quintet states, respectively. This result is explained by modulation of radical-triplet interactions by the counter ion due to different sizes of metal ions.

本文言語English
ページ(範囲)1619-1626
ページ数8
ジャーナルMolecular Physics
104
10-11
DOI
出版ステータスPublished - 2006 5 20

ASJC Scopus subject areas

  • 生物理学
  • 分子生物学
  • 凝縮系物理学
  • 物理化学および理論化学

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