Anomalous Fluorescent Responses of 9-Fluorenecarboxamide Derivatives Possessing Benzo-15-crown-5

HAMA Hiroya, MOROZUMI Tatsuya, NAKAMURA Hiroshi

doi:10.2116/analsci.23.1257

Anomalous Fluorescent Responses of 9-Fluorenecarboxamide Derivatives Possessing Benzo-15-crown-5

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HAMA Hiroya

Division of Environmental Material Science, Graduate School of Environmental Science, Hokkaido University
MOROZUMI Tatsuya

Section of Materials Science, Research Faculty of Environmental Earth Science, Hokkaido University
NAKAMURA Hiroshi

Section of Materials Science, Research Faculty of Environmental Earth Science, Hokkaido University

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説明

A new fluorescent ionophore for alkaline earth metal ions, 4′-(9-fluorenecarboxamido)benzo-15-crown-5 (3), was synthesized; its photochemical behavior was investigated using UV, fluorescence, ¹H NMR, and ¹³C NMR spectrometry. In the absence of a metal ion, the fluorene moiety showed weak fluorescence emission (fluorescence “Off” state). However, complexation with metal ions greatly enhanced the fluorescence intensity (fluorescence “On” state).