A naked-eye chemosensor for fluoride ions: a selective easy-to-prepare test paperElectronic supplementary information (ESI) available. See DOI: 10.1039/c3ob27131e

A new naked-eye chromogenic chemosensor based on 2-thiohydantoin shows high selectivity for fluoride ions and is used to develop a test paper for detection of fluoride ions in the solid state. A new naked-eye chromogenic chemosensor based on 2-thiohydantoin shows high selectivity for fluoride ions and is used to develop a test paper for detection of fluoride ions in the solid state.