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• W2313388064 endingPage "5338" @default.
• W2313388064 startingPage "5328" @default.
• W2313388064 abstract "With the purpose of developing readily synthesized CHEF (chelation-enhanced fluorescence) type Zn2+ probes with relatively simple molecular structures and excellent sensing behavior, p-anisoyl chloride was used for the acylation of 5-(pentafluorophenyl)dipyrromethane. Interestingly, the α,β′-diacylated product PS2 with a unique substitution mode was obtained in high yield in addition to the normal α-substituted mono- and diacylated products PS1 and PS3. Further oxidation of PS1–PS3 afforded dipyrrins S1–S3. Crystal structure and 1H NMR measurements of S2 demonstrate the existence of a pure tautomer, which is consistent with DFT calculations. S1–S3 show highly Zn2+ selective “turn-on” fluorescence based on a CHEF mechanism by the formation of 2:1 (probe:metal) Zn2+ complexes. The emission colors can be easily tuned from green to red by changing the dipyrrin substitution modes. Furthermore, these probes demonstrate fast responses and wide applicable pH ranges. Among them, S2 shows the highest Zn2+ sensitivity, with a detection limit of 4.4 × 10–8 M." @default.
• W2313388064 created "2016-06-24" @default.
• W2313388064 creator A5019349493 @default.
• W2313388064 creator A5029175865 @default.
• W2313388064 creator A5059311571 @default.
• W2313388064 creator A5066117003 @default.
• W2313388064 creator A5086257695 @default.
• W2313388064 date "2013-05-20" @default.
• W2313388064 modified "2023-10-01" @default.
• W2313388064 title "α-Monoacylated and α,α′- and α,β′-Diacylated Dipyrrins as Highly Sensitive Fluorescence “Turn-on” Zn²⁺ Probes" @default.
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