A new class of fluorescent chemosensors based on the A new class of fluorescent chemosensors based on the β-aminobisphosphonate receptor

John Callan (1) , Sukanta Kamila (2) , Narinder Singh (2) , Ray Mulrooney (2) , Martha Mackay (2) , Maedhbh Cronin (2) , John Dunn (2) , David Durham (2)

1 RGU - Robert Gordon University
2 RGU

The photophysical properties of a range of fluorescent sensors with β-aminobisphosphonate receptors have been studied. The compounds were designed according to the Fluorophore-Spacer-Receptor format of Photoinduced Electron Transfer (PET) based sensors. The sensors displayed unusual fluorescence intensity- pH profiles that was attributed to a receptor – fluorophore H-bonding interaction that resulted in a quenching of fluorescence. The number of receptors and the nature of the fluorophore were both shown to have an effect on the pH profiles of the sensors. In addition, compound 1 was also shown to be selective for Cu2+ ions, in water at pH 7.4 with sensitivity in the ΜM range.

Mots clés: Physical Sciences

John Callan, Sukanta Kamila, Narinder Singh, Ray Mulrooney, Martha Mackay, et al.. A new class of fluorescent chemosensors based on the A new class of fluorescent chemosensors based on the β-aminobisphosphonate receptor. Supramolecular Chemistry, 2009, 21 (07), pp.643-649. ⟨10.1080/10610270802709352⟩. ⟨hal-00520015⟩