Highly Selective Aluminum(III) Ion Sensing with Luminescent Iridium(III) Complexes Bearing a Distorted 2,2′-Bipyridine-3,3′-diol Moiety Utilizing a Rigidified Seven-Membered Chelate Ring

Yota Suzuki, Ibuki Mizuno, Yui Tabei, Yuri Fujioka, Kazuteru Shinozaki, Tomoaki Sugaya*, Koji Ishihara

*この研究の対応する著者

研究成果: Article査読

6 被引用数 (Scopus)

抄録

To create an ion sensor utilizing a rigidified seven-membered chelate ring, we developed two Ir(III) complexes with 2,2′-bipyridine-3,3′-diol (bpy(OH)2, bpydL) ligands as reaction centers, namely Ir1 ([Ir(ppy)2{bpy(O-)(OH)}], ppy = 2-phenylpyridine) and Ir2 ([Ir(bzq)2{bpy(O-)(OH)}], bzq = benzo[h]quinoline), and evaluated their reactivities toward metal ions by spectrophotometry. When they are reacted with Al3+, these complexes exhibit dramatic enhancements in emission intensity (775-fold for Ir1 and 51.0-fold for Ir2) and distinct orange to green changes in emission color. The reactions of Ir1 and Ir2 with Al3+ were found to barely be affected by nearly all common metal ions. We conclude that these high selectivities arise from the high affinities of the (O,O) atoms in bpydL for hard metal ions and the increased strain of the seven-membered chelate ring due to the coordination of bpydL to the Ir(III) center in each complex, which excludes large metal ions out of the chelate ring.

本文言語English
ページ(範囲)9663-9671
ページ数9
ジャーナルInorganic Chemistry
58
15
DOI
出版ステータスPublished - 2019 8 5

ASJC Scopus subject areas

  • 物理化学および理論化学
  • 無機化学

フィンガープリント

「Highly Selective Aluminum(III) Ion Sensing with Luminescent Iridium(III) Complexes Bearing a Distorted 2,2′-Bipyridine-3,3′-diol Moiety Utilizing a Rigidified Seven-Membered Chelate Ring」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル