Ion Detection by Intramolecular Charge-transfer                    Absorption of Benzocrown-bipyridinium Conjugate Appending Octadecyl Chain

Tetsuo KUWABARA; Ryota SATAKE; Haocheng GUO; Masayo KATSUMATA; Masaki TAKAHASHI; Yasutada SUZUKI; Takashi OHTSUKI; Tetsuya SATO; Hideki KUROKAWA

doi:10.5182/jaie.27.27

一般論文

Ion Detection by Intramolecular Charge-transfer Absorption of Benzocrown-bipyridinium Conjugate Appending Octadecyl Chain

Tetsuo KUWABARA, Ryota SATAKE, Haocheng GUO, Masayo KATSUMATA, Masaki TAKAHASHI, Yasutada SUZUKI, Takashi OHTSUKI, Tetsuya SATO, Hideki KUROKAWA

著者情報

キーワード: Chemosensor, Ion sensing, Intramolecular charge transfer absorption, Host-guest chemistry, Crown ether, Bipyridinium

ジャーナルフリー

2016 年 27 巻 2 号 p. 27-32

DOI https://doi.org/10.5182/jaie.27.27

詳細

抄録

A novel chemosensor based on benzocrown-bipyridine conjugate appending an octadecyl group, 1, was prepared to investigate its ion sensing ability in acetonitrile. The addition of Li⁺ as the guest caused change in color of 1 from yellow to colorless. This is owing to blue shift in intramolecular charge transfer (CT) absorption at around 400 nm, which is associated with the a 1:1 host-guest complex formation. The guest-induced color change of 1 was used for alkali and alkaline metal ion sensing. It was found that 1 detected Ca²⁺ with highest sensitivity.

責任著者(Corresponding author)

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