Issue Date: June 2, 2008
Sensor Measures Protons, Polarity
A two-for-one sensor that can simultaneously detect local proton concentration and polarity could lead to a tool that can measure the proton gradients across biological membranes involved in the production of adenosine triphosphate, the cell's energy currency. A. Prasanna de Silva at Queen's University, in Belfast, and his collaborators built a small molecule that possesses an amine proton receptor and a polarity-sensitive aromatic fluorophore (Angew. Chem. Int. Ed., DOI: 10.1002/anie.200801516). Proton concentration . . .
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