The ligand 2, in which three fluorogenic 6-methoxy-1-methylquinolinium fragments are appended to a mesityl platform, in MeCN forms 1:1 adducts with halides and other inorg. anions. 1H NMR studies and mol. modeling indicate that 2 provides a cavity for anion inclusion and establishes electrostatic interactions with the guest. Anion inclusion induces quenching of the fluorogenic fragments with an efficiency decreasing along the series Br->>I->NCS->>Cl->NO3->HSO4-. The fluorometric response of 2 to anions is orders of magnitude more sensitive than that of just 6-methoxy-1-methylquinolinium, ligand 1.

A Concave Fluorescent Sensor for Anions Based on 6-Methoxy-1-methylquinolinium

AMENDOLA, VALERIA;FABBRIZZI, LUIGI;MONZANI, ENRICO
2004-01-01

Abstract

The ligand 2, in which three fluorogenic 6-methoxy-1-methylquinolinium fragments are appended to a mesityl platform, in MeCN forms 1:1 adducts with halides and other inorg. anions. 1H NMR studies and mol. modeling indicate that 2 provides a cavity for anion inclusion and establishes electrostatic interactions with the guest. Anion inclusion induces quenching of the fluorogenic fragments with an efficiency decreasing along the series Br->>I->NCS->>Cl->NO3->HSO4-. The fluorometric response of 2 to anions is orders of magnitude more sensitive than that of just 6-methoxy-1-methylquinolinium, ligand 1.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11571/21219
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