A highly selective dual-channel fluorescent probe for the detection of Zn2+ ion and pyrophosphate in micelle. (February 2018)

• Record Type: Journal Article
• Authors: Chang, Min Jung; Lee, Min Hee
• Is Part Of: Dyes and pigments. Volume 149(2018)
• Page Start: 915
• Page End: 920
• Publication Date: 2018-02
• Subjects: Zinc detection -- Pyrophosphate (PPi) detection -- Ratiometric fluorescent probe -- Aggregation-induced emission (AIE) -- Photo-induced electron transfer (PET); Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2017.11.057
• Languages: English
• ISSNs: 0143-7208

Abstract

Abstract: We presented a micellar probe 1 as a highly selective dual-channel fluorescent probe for Zn 2+ and pyrophosphate (PPi) ions. Probe 1 was comprised of tetraphenylethene (TPE) as an AIEgen and naphthalimide-dipicolylamine (DPA) scaffold as a Zn 2+ -chelating fluorescent reporter, and it was developed as a micellar 1 in the presence of sodium dodecyl sulfate (SDS). The micellar probe 1 showed a blue fluorescence at 482 nm ascribed to the aggregation-induced emission (AIE) of TPE moiety. However, in the presence of Zn 2+ ion, the micellar probe exhibited a strong green fluorescence at 530 nm by a suppression of photo-induced electron transfer (PET) occurring from DPA to naphthalimide. This fluorescence enhancement was found to be highly selective for Zn 2+ ion over other metal ions. In addition, the Zn 2+ -chelated probe 1 in micelle displayed a selective ratiometric change in fluorescence intensities at 530 and 450 nm for PPi over other anions. The detection limits (LOD) of 1 to Zn 2+ and PPi also turned out to be at 46 and 88 nM, respectively. Graphical abstract: Highlights: A TPE-appended naphthalimide-dipicolylamine was synthesized. This was developed for the ratiometric detection of Zn 2+ and PPi. This showed the detection limits to Zn 2+ and PPi with 46 and 88 nM, respectively. This probe readily responded to the Zn 2+ and PPi ions in a wide range of pH 5–10.