Figure 5

Fluorescence intensity changes of sensor Rh6G-1 (10 μM) in response to various metal species (20 equiv.) in water (containing 1 % DMSO as a cosolvent). 1. none; 2. Pd2+; 3. Ca2+; 4. Cd2+; 5. Co2+; 6. Zn2+; 7. Cu2+; 8. Fe2+; 9. Fe3+; 10. Hg2+; 11. Mg2+; 12. Mn2+; 13, Ag+, 14, Au3+, 15. Ni2+; 16. Pb2+; 17. Na+, 18. K+. Excitation at 500 nm; emission at 556 nm.

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