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Water-sensitive ratiometric fluorescent probes and application to test strip for rapid and reversible detection of water

Authors
Yoon, Shin A.Oh, Ju HyunKim, Sung KukLee, Min Hee
Issue Date
Jun-2019
Publisher
ELSEVIER SCI LTD
Keywords
Naphthalimide; Intramolecular charge transfer (ICT); Water detection; Ratiometric fluorescence probe; Reusable test strip
Citation
DYES AND PIGMENTS, v.165, pp.421 - 428
Journal Title
DYES AND PIGMENTS
Volume
165
Start Page
421
End Page
428
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/3008
DOI
10.1016/j.dyepig.2019.02.052
ISSN
0143-7208
Abstract
Naphthalimide-decorated fluorinated acetamides 1 and 2 were developed as solvent-sensitive dual emissive fluorescence probes. Particularly, 1 exhibited dual emission with a large Stokes shift for water, DMF, and DMSO solvents over other various organic solvents. The dual emission might be due to the increase of intramolecular charge transfer (ICT) of the naphthalimide moiety through the association of the difluorinated acetamide group with the solvent molecules. The 1 can give rise to a ratiometric change in the dual emission and a visual fluorescent color change depending on the water contents in organic solvents, including ethanol, methanol, acetonitrile and DMF solvents. Moreover, the 1-impregnated paper strips showed a rapid and easy-to-visualize fluorescent color change enabling water detection in organic solvents. These simple-to-use paper strips were also found to be reusable over 20 times.
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