What is it about?
We succeeded in developing an ON1–OFF–ON2 fluorescence sensor for acetate anions by preparing 9,10BtDSPUA, having double phenylurea groups at positions 9 and 10 of the anthracene ring, and using photoreaction dynamics, including the excited state intermolecular proton transfer (ESIPT) reaction mechanism.
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Why is it important?
While the fluorescence of 9,10BtDSPUA (ON1 state) was quenched in the presence of low concentration of acetate anions (OFF state), fluorescence enhancement occurred by the addition of high concentration of acetate anions (ON2 state). This study is the first example of an ON1–OFF–ON2 fluorescence sensor for detection of acetate anion concentrations.
Perspectives
We hope this study contributes to new knowledge in the field of a fluorescence sensor.
Professor Yoshinobu Nishimura
nishimura@chem.tsukuba.ac.jp
Read the Original
This page is a summary of: Fluorescence Sensor with A New ON1
-OFF-ON2
Switching Mechanism Using the Excited State Intermolecular Proton Transfer Reaction of An Anthracene-diurea Compound, Photochemistry and Photobiology, June 2017, Wiley,
DOI: 10.1111/php.12768.
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