<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Fluorescence “Turn-Off” and Colorimetric Sensor for Fe2+, Fe3+, and Cu2+ Ions Based on a 2,5,7-Triarylimidazopyridine Scaffold"^^ . "Two cyanoimidazopyridine-based sensors (SS1 and SS2) were explored for the colorimetric and fluorometric detection of Fe2+, Fe3+, and Cu2+ ions in the semi-aqueous medium. The “turn-off” fluorescence response of both sensors to these ions was due to the restriction in internal charge transfer. Job’s plot and semi-empirical calculations revealed that SS1 and SS2 complexed with Cu2+ ions in a 1:1 ratio and Fe2+/3+ ions in a 2:1 ratio, respectively. The sensors were found to have high binding constant (Ka) values and low detection limit values. FMO analysis using the semi-empirical quantum mechanics method revealed the decrease in energy gap after complexation with metal ions. Sensor-coated filter paper strips were prepared and analyzed, where the color changes in the strips could be utilized for the real-time detection of Fe2+, Fe3+, and Cu2+ ions."^^ . "2022-03-22" . "7" . "13" . . "ACS Publications "^^ . . . "ACS Omega"^^ . . . . . . . . . . . . . . . . . . . . . . . "Sonakshi "^^ . "Sasan"^^ . "Sonakshi Sasan"^^ . . "Kamal K"^^ . "Kapoor"^^ . "Kamal K Kapoor"^^ . . "Tavishi "^^ . "Chopra"^^ . "Tavishi Chopra"^^ . . "Raman "^^ . "Parkesh"^^ . "Raman Parkesh"^^ . . "Dolma "^^ . "Tsering"^^ . "Dolma Tsering"^^ . . "Annah "^^ . "Gupta"^^ . "Annah Gupta"^^ . . . . . "HTML Summary of #2994 \n\nFluorescence “Turn-Off” and Colorimetric Sensor for Fe2+, Fe3+, and Cu2+ Ions Based on a 2,5,7-Triarylimidazopyridine Scaffold\n\n" . "text/html" . . . "QR Microbiology"@en . .