スガヤ　トモアキ   Tomoaki Sugaya   菅谷　知明    所属   千葉工業大学  工学部 教育センター（工学部）    職種   教授
言語種別	英語
発行・発表の年月	2019/08
形態種別	学術雑誌
査読	査読あり
標題	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
執筆形態	共著
掲載誌名	Inorganic Chemistry
掲載区分	国外
出版社・発行元	American Chemical Society
巻・号・頁	58(15),pp.9663-9671
担当区分	責任著者
著者・共著者	Yota Suzuki, Ibuki Mizuno, Yui Tabei, Yuri Fujioka, Kazuteru Shinozaki, Tomoaki Sugaya, Koji Ishihara
概要	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.
DOI	10.1021/acs.inorgchem.9b00373
ISSN	1520-510X
PMID	31328918