Fig. 3. (a) Absorbance and emission spectra of m[n]CPPs; (b) HOMO (left) and S1′ (right) orbital depiction of [5]CPP and m[5]CPP, demonstrating change in orbital symmetry. Calculated using CAM-B3LYP/STO-3G level of theory; (c) absorbance, extinction coefficient (ε), emission and quantum yield (Φ) of m[5]–m[8]-, m[10]- and m[12]CPP and brightness comparison of m[n]CPPs and [n]CPPs.
