Figure 4.

Small organic lead sensors. A.) Ketoaminocoumarin⁹⁶ B.) Leadfluor-1, LF1⁹⁷ C.) 1,8-diaminoanthraquinone⁹⁸ D.) Triazolo-thiadiazi, imbedded in PVC⁹⁹ E.) Lead fluorescent sensor, LFS-1¹⁰⁴ F.) 5,8-bis((5′-chloro-8′-hydroxy-7′-quinolinyl)methyl)-2,11-dithia-5,8-diaza-2,6-pyridinophane, L2, imboilized in PVC¹⁰⁵ G.) Leadglow, LG¹⁰⁰ H.) Imine-bridged TTF-pi-pyridine derivative¹⁰⁹