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- W4285087946 abstract "An optical pH probe is a simple and effective tool for determining an accurate pH value in its localized area. However, basic pH probes with pKBH+ values above 8 have rarely been reported, although many components with high pKa such as arginine play important roles in vivo. Herein, we introduce novel colorimetric and fluorescent basic probes 1–5, which are designed using push–pull-type aminoquinoline and aminobenzoquinoline fluorophores, with pKBH+ values ranging from 8.4 to 9.9. After the basicity of the remarkably sensitive basic probe 4 was tuned, it was able to successfully distinguish between the pKa values of MeOH (15.5) and EtOH (15.9), thus displaying selective protonation and fluorescence enhancement in MeOH over EtOH. Our pH probes can be used to detect MeOH poisoning in commercial EtOH products such as hand sanitizers, providing an effective solution to this problem observed during the COVID-19 pandemic." @default.
- W4285087946 created "2022-07-14" @default.
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- W4285087946 date "2022-07-13" @default.
- W4285087946 modified "2023-10-16" @default.
- W4285087946 title "Basic Fluorescent Protonation-Type pH Probe Sensitive to Small Δp<i>K</i><sub>a</sub> of Methanol and Ethanol" @default.
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- W4285087946 doi "https://doi.org/10.1021/acs.analchem.2c01415" @default.
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