As for the excited-state property of the DPND aggregate shown in Fig. , the relative values of all couplings have similar behaviors to those in DPND6, however, the absolute magnitudes of couplings are about two to six times larger than in DPND6 because of a larger overlap between two monomers. These significant differences of electronic coupling strengths may result in the remarkably different mixed characteristics of LE and CT states and different spectral characteristics.