Novel enantioselective fluorescent sensors for malate anion based on acridine

• The novel fluorescent sensors based on acridine can enantioselective recognize malate anion.
• In the binding with malate anion, the large fluorescence increase can be attributed to the PET mechanism.
• The binding constants were calculated and binding mechanism was given.

The compounds L-1 and L-2 were synthesized and the interactions of all of the compounds with malate anion were studied by fluorescent titration and 1H NMR experiments. The Sensors L-1 and L-2 were found to present good enantioselective fluorescent sensing ability to malate anion. The results indicated that sensors L-1 and L-2 were very promising to be used as fluorescent sensors in determining malate anion in CH3CN.

The compounds L-1 and L-2 were synthesized and the interactions of all of the compounds with malate anion were studied in CH3CN by fluorescent titration and H NMR experiments. The Sensors L-1 and L-2 were found to present good enantioselective fluorescent sensing ability to malate anion. The results indicated that sensors L-1 and L-2 were very promising to be used as fluorescent sensors in determining malate anion in CH3CN. Figure optionsDownload as PowerPoint slide