Video Experimental Relacionado

Updated: Jan 13, 2026

A Direct, Regioselective and Atom-Economical Synthesis of 3-Aroyl-N-hydroxy-5-nitroindoles by Cycloaddition of 4-Nitronitrosobenzene with Alkynones

A Direct, Regioselective and Atom-Economical Synthesis of 3-Aroyl-N-hydroxy-5-nitroindoles by Cycloaddition of 4-Nitronitrosobenzene with Alkynones

Published on: January 21, 2020

Macrociclos de azacarbohidrazona-oxa-triazol a base de carborano con emisión de doble estado como sondas para

Yuxiao Qin¹, Jiayi Liu¹, Caixia Lin¹

¹Key Laboratory of Molecule Synthesis and Function Discovery (Fujian Province University), Department of Chemistry, Fuzhou University, Fuzhou 350108, China.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy

|January 7, 2026

Abstract:

A series of o-carborane-based aza-oxa-triazole macrocycles (No, D₂, D₄) were synthesized via Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC). Simply by substituting the azide diethanolamine precursor, two dansyl-modified macrocycles (D₂ and D₄) with dual-state emission (DSE) were readily obtained. The incorporation of the dansyl moiety significantly enhanced the luminescence, resulting in higher quantum yields and longer fluorescence lifetimes. Additionally, the macrocycles exhibit unique aggregation-induced emission (AIE) properties and macrocycles D₂ and D₄ simultaneously exhibit aggregation-induced quenching (ACQ) and AIE characteristics. Furthermore, these macrocycles function as selective fluorescent sensors for nitroaromatic compounds, particularly demonstrating excellent specificity and anti-interference ability toward 2,4,6-trinitrophenol (TNP) with a notable fluorescence quenching response. Macrocycle D₂ achieved a remarkably low detection limit of 7 × 10^-8 M for TNP in THF.

Palabras clave:

Macrociclo de azacarbohidrazona-oxa-triazol Emisión de doble estado O-carborano Reconocer compuestos de nitroaromáticos

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