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UV–vis absorption spectra of (A) 2H-TFP, (B) Ni(II)TFP, (C) Zn(II)TFP, and (D) Cu(II)TFP. Solutions of 2H-TFP and Zn(II)TFP also exhibited emission, the spectra for which are shown by the dashed line [λexc = 430 nm for 2H-TFP and 432 nm for Zn(II)TFP]. The absorption and emission spectra are in arbitrary units (A.U.). The spectra were recorded in CH2Cl2.
