2024
DOI: 10.1002/asia.202400777
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Application of RET Approach for Ratiometric Response Enhancement of ICT Fluorescent Hg2+ Probe based on Crown‐containing Styrylpyridinium Dye

Pavel A. Panchenko,
Anastasija V. Efremenko,
Anna S. Polyakova
et al.

Abstract: Styrylpyridinium dye bearing azadithia‐15‐crown‐5 ether receptor group SP and 4‐alkoxy‐1,8‐naphthalimide fluorophore were linked using copper‐catalyzed azide‐alkyne cycloaddition click reaction to afford dyad compound NI‐SP. Chemosensor NI‐SP exhibited selective ratiometric fluorescent response to the presence of Hg2+ in aqueous solution due to the interplay between resonance energy transfer (RET) and intramolecular charge transfer (ICT) processes occurred upon excitation. The observed switching of the ratio o… Show more

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