Fig. 1 (IMAGE) Osaka University Caption The a) chemical structure of the developed sensor molecule, b) color change of the solution when fluoride ions are added, and c) luminescence color change when fluoride ions are added.d) the luminescence of polymer film prepared by adding fluoride ions. Credit Youhei Takeda Usage Restrictions Credit must be given to the creator. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.