A novel terephthalaldehyde based turn-on fluorescent chemosensor for Cu and its application in imaging of living cells.

A new terephthaldehyde-based chemosensor 1 bearing an aminophenol recognition unit has been synthesized and applied to the fluorescent sensing of metal ions. Molecular system 1 acts as a highly selective and sensitive fluorescence turn-on sensor for Cu. The sensing mechanism has been explored.

A new Schiff base as a turn-off fluorescent sensor for Cu and its photophysical properties.

A new Schiff base receptor 1 was synthesized and its photophysical properties were investigated by absorption, emission and excitation techniques. Furthermore, its chromogenic and fluorogenic sensing abilities towards various metal ions were examined. Receptor 1 selectively detects Cu ion through fluorescence quenching and detection was not inhibited in the presence of other metal ions.

Highly selective optical and reversible dual-path chemosensor for cyanide detection and its application in live cells imaging.

A new biocompatible fluorescent receptor 1 was synthesized by conjugating diaminomaleonitrile (DMN) with benzothiazole unit, and characterized by single X-ray. In DMF/water (1:1, v/v), the receptor 1 showed a selectivity turn-on fluorescence at 517nm in the presence of CN. Receptor 1 showed a detection limit down to 0.