Fig. 4. (a) The normalised absorption–emission spectra of complex 1–4, dashed line representing the excitation of each complex and solid line representing the emission, all spectra were measured in CHCl3 (1.0 × 10−5 M). (b) The normalised absorption–emission spectra of complex 1–4 with compound 5 in a 1 : 1 molar ratio in CHCl3 (1.0 × 10−5 M).
