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Figure S1: Synthesis and characterization of RM191A(A) UV–visible spectrum of RM191A and Cu-EDTA complex. (B) FTIR spectrum of RM191A. (C) DOSY 2D spectrum of EDTA-Zinc complex and RM191A in D2O. (D) White light micrograph of RM191A crystals. (E) Cyclic Voltammogram of RM191A showing two reduction peaks and one oxidation peak.
