A highly selective dual-channel fluorescent probe for the detection of Zn2+ ion and pyrophosphate in micelle
- Authors
- Chang, Min Jung; Lee, Min Hee
- Issue Date
- Feb-2018
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Zinc detection; Pyrophosphate (PPi) detection; Ratiometric fluorescent probe; Aggregation-induced emission (ATE); Photo-induced electron transfer (PET)
- Citation
- DYES AND PIGMENTS, v.149, pp 915 - 920
- Pages
- 6
- Journal Title
- DYES AND PIGMENTS
- Volume
- 149
- Start Page
- 915
- End Page
- 920
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/4714
- DOI
- 10.1016/j.dyepig.2017.11.057
- ISSN
- 0143-7208
1873-3743
- Abstract
- We presented a micellar probe 1 as a highly selective dual-channel fluorescent probe for Zn2+ and pyrophosphate (PPi) ions. Probe 1 was comprised of tetraphenylethene (TPE) as an AIEgen and naphthalimide-dipicolylamine (DPA) scaffold as a Zn2+-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 Zn2+ 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 Zn2+ ion over other metal ions. In addition, the Zn2+-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 Zn2+ and PPi also turned out to be at 46 and 88 nM, respectively.
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