A novel chemodosimeter for fluoride ions based on deprotonation of the C–H group followed by an autoxidative decyanation process

Abstract

A novel chemodosimeter for fluoride ions (F(-)) based on deprotonation of the C-H group followed by an autoxidative decyanation process has been developed for the first time, with a "naked-eye" response (OFF-ON-OFF) and ratiometric chromofluorogenic selective sensing for F(-).

A new fluorescent “turn-on” chemodosimeter for cyanide based on dual reversible and irreversible deprotonation of NH and CH groups

“…S22 and S23, ESI †). 7 In view of the popular fluorescence property of the known 1,8-naphthalimide derivatives, 12 upon the addition of CN À ions to the solution of 5, a significant increase in the fluorescence intensity at 415 nm (l ex = 353 nm) was observed, and none of the other anions (F À , AcO À , H 2 PO 4 À , Cl À , Br À , I À , NO 3 À , BF 4 À , or ClO 4 À ions) induced any significant change in the fluorescent spectrum of dosimeter 5 (Fig. S24 and S25, ESI †); this can be attributed to the stepwise irreversible deprotonation of the CH group, consistent with our previous report.…”

Derivatives of α,α-Aryl Naphthalimide Nitriles as Fluoride Ion Sensors: Convenient Precursors for the Synthesis of Aryl Naphthalimide Ketones

“…When 5.4 equivalents of F -was added, the absorbance intensity of receptor 3e was saturated, indicating that complex [3e + F] -formed followed by the dramatic fluoride-induced electron rearrangement of receptor. 12 Furthermore, the ratios of the absorbances at 332 and 641 nm were almost linear to the Fion concentrations (Figure 1, inset, R 2 = 0.9996). The detection limit of 3e was determined to be 1.94 μM ( Figure S60).…”

Highly efficient and selective probes based on polycyclic aromatic hydrocarbons with trimethylsilylethynyl groups for fluoride anion detection

“…Moreover, the response time of the probes attached C C-SiMe 3 substituent is much shorter than those probes with Si-O bonds, which usually exhibits response times in the minutes range . [10,16,[23][24][25][26][27][28][29][30][31][32][33][34][35] …”