File Name : figure s1.tif

Caption : fig. s1 effect of a: b ratio on fluorescence of sensor. fix the concentration of b at 100 nm. error bars = ± sd, n = 3.

File Name : figure s2.tif

Caption : fig. s2 fluorescence methods. the mixture was composed of mc-lr, mc-rr, mc-yr, mc-la, cu2+, cd2+, pb2+, and mn2+. ns: no significance. error bars = ± sd, n = 3.