Synthesis and Sensor Activity of a PET-based 1,8-naphthalimide Probe for Zn 2+ and pH Determination
Journal of Fluorescence(2014)
Abstract
A novel blue-emitting 1,8-naphthalimide fluorophore designed as a molecular PET-based probe for determination of pH and detection of transition metal ions in the environment was successfully synthesized. Novel compound was configured on the “ fluorophore-spacer-receptor ” format. Due to the tertiary amine receptor the novel system showed “off-on” switching properties under the transition from alkaline to acid media (FE = 3.2) and in the presence of Zn 2+ ions (FE = 2.5). The results obtained illustrate the high potential of the synthesized blue-emitting 1,8-naphthalimide fluorophore as an efficient pH chemosensing material and a selective probe for Zn 2+ ions. Graphical Abstract ᅟ
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Key words
Blue-emitting 1,8-naphthalimide,Photoinduced electron transfer,Absorption,Fluorescence,Fluorescent pH probe,Selective fluorescent Zn2+ probe
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