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ID 45814
本文ファイル
著者
Kida, Motoki
Kubo, Mayuko
Ujihira, Tomoyuki
Ebata, Takayuki 大学院理学研究科
Abe, Manabu 大学院理学研究科 広大研究者総覧
Inokuchi, Yoshiya 大学院理学研究科 広大研究者総覧
キーワード
crown ethers
fluorescence
photodissociation spectroscopy
metal ions
excimer
NDC
化学
抄録(英)
Observation of an excimer fluorescence in solution is proposed for detecting the encapsulation of potassium ion as opposed to other alkali ions by dibenzo-crown ethers. The scheme has been validated by ultraviolet photodissociation (UVPD) spectroscopy of dibenzo-21-crown-7 and dibenzo-24-crown-8 complexes with potassium ion, K+·DB21C7 and K+·DB24C8, performed under cold (~10 K) conditions in the gas phase and by quantum chemical calculations of the geometry and electronic structures of the complexes. Calculations suggest formation of a closely spaced excimer structure of benzene rings only for the K+·DB24C8. Interaction of the rings may lead to lifetime broadening in UV absorption, which is experimentally observed in the gas phase, indeed, only for this cold complex. Consistently, intramolecular excimer fluorescence of DB24C8 in solution is observed only for K+·DB24C8. The excimer fluorescence is not observed with other alkali metal ions. The detection of such intramolecular excimer fluorescence therefore can, potentially, serve as a simple, background-fee, selective probe of potassium ion in solution.
内容記述
This work was partly supported by JSPS KAKENHI Grant Numbers JP17H0302200 (MA) and JP16H04098 (YI).
掲載誌名
ChemPhysChem
19巻
11号
開始ページ
1331
終了ページ
1335
出版年月日
2018-06-05
出版者
Wiley-VCH
ISSN
1439-4235
1439-7641
出版者DOI
PubMedID
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
権利情報
Copyright (c) 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
This is the accepted version of the following article: [M. Kida, M. Kubo, T. Ujihira, T. Ebata, M. Abe, and Y. Inokuchi.(2018), Selective Probing of Potassium Ion in Solution by Intramolecular Excimer Fluorescence of Dibenzo-Crown Ethers. ChemPhysChem, 19: 1–6], which has been published in final form at http://doi.org/10.1002/cphc.201800163. This article may be used for non-commercial purposes in accordance with Wiley Self-Archiving Policy.
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
部局名
理学研究科
備考
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