“…According to the known Forster-Dеwar-Nott's rule [193][194][195], opposite [196,197]. Table 7 confirms this conclusion [198]: the bathochromic effect is observed in the trimethinecyanine (m = 0) and heptamethinecyanine (m = 2), whereas the spectrum of pentamethinecyanine (m = 1) undergoes hypsochromic shift.…”