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Aromatic fluorine atom-induced highly amine-sensitive trimethine cyanine dye showing colorimetric and ratiometric fluorescence change† † Electronic supplementary information (ESI) available. See https://doi.org/10.1039/d2ra04387d


ABSTRACT: Herein, introducing multiple fluorine atoms into aromatic rings of trimethine cyanine dyes is proposed as a powerful method for dramatically increasing sensitivity to amines. The highly sensitive ratiometric fluorescence properties previously available only by intramolecular addition can be exploited in reactions with intermolecular amines or other nucleophiles. The prepared ring-perfluorinated trimethine cyanine dye 2a has a significantly higher response to n-hexylamine than the non-fluorinated dye 2b, and exhibited a dual change in the solution and on filter paper and fluorescence color at widely shifted wavelengths, visible to the naked eye.

SUBMITTER: Kani R 

PROVIDER: S-EPMC9451369 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature

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