Adenine-linked naphthalimide: A case of selective colorimetric as well as fluorometric sensing of F− and anion-activated moisture detection in organic solvents and CO2-sensing

Compounds 1, 2 and 3 with a common strategy of variation of substituent at the 4-position of naphthalimide have been designed and synthesized. Of the three structures, compound 1 has been established as F− sensor in CH3CN involving a color change from colorless to pink. The pink color is discharged in the presence of water or any polar protic solvent. By comparison, while compound 3 did not show any response towards anions, compound 2 under...