Fig. 2. Comparison of (i) Q-band absorption spectra of hybrids 4 (black line), 5 (red line) and 6 (blue line), (ii) Q-band absorption spectra of hybrids 7 (black line) and 8 (red line) (Soret-bands are shown in inset), (iii) emission spectra of hybrids 4 (black line), 5 (red line) and 6 (blue line), (iv) emission spectra of hybrids 7 (black line) and 8 (red line). All the spectra except the Soret bands shown in (i) & (ii) were recorded in 1 × 10−5 M solution of toluene and, for the Soret-band measurement, the concentration used was 1 × 10−6 M.
