A simple colorimetric and ON-OFF fluorescent chemosensor for biologically important anions based on amide moieties.
A simple colorimetric and fluorescent anion chemosensor based on amide moieties, 6-nitro-1,4-dihydroquinoxaline-2,3-dione has been designed, synthesized and characterized by (1)H NMR, ESI-MS and elemental analyses. The strong basic anions such as F(-) and AcO(-) resulted in significant decrease in fluorescent emission intensity of the compound 1, accompanied synchronously with a dramatic color change from colorless to deep yellow in organic medium. (1)H NMR titration experiments shed light on the nature of the interactions between 1 and the anions.
Shao
Jie
J
Department of Chemistry, Nankai University, Tianjin 300071, PR China.
Lin
Hai
H
Cai
Zun-Sheng
ZS
Lin
Huakuan
H
D000085:Acetates / Q000737:chemistry; D000577:Amides / Q000138:chemical synthesis / Q000737:chemistry* / Q000528:radiation effects; D000838:Anions / Q000737:chemistry*; D015374:Biosensing Techniques / Q000379:methods*; D003124:Colorimetry; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry* / Q000528:radiation effects; D005459:Fluorides / Q000737:chemistry; D011810:Quinoxalines / Q000138:chemical synthesis / Q000737:chemistry* / Q000528:radiation effects; D013056:Spectrophotometry, Ultraviolet
C542013:6-nitro-1,4-dihydroquinoxaline-2,3-dione; D000085:Acetates; D000577:Amides; D000838:Anions; D005456:Fluorescent Dyes; D011810:Quinoxalines; D005459:Fluorides