a) Changes in the UV-Vis-NIR spectrum of 1,8-Am2Aq in dichloromethane upon the gradual addition of TFSIH; b) Changes in the UV-Vis-NIR spectrum of 1,8-AmFcAq in dichloromethane upon the gradual addition of TFSIH; (c) UV-Vis-NIR spectrum superposition of [1,8-Ar2Pyl](TFSI).

Cyclic voltammogram of 4 in CH2Cl2.

Reagents and conditions: (a) ethyl acetoacetate, acetic anhydride, triethylamine, dichloromethane, room temperature, 30 min; (b) trifluroacetic, acetonitrile, room temperature, 45 min; (c) 40 psi H2, 10% Pd=C, methanol, 24 h.

UV/Vis spectrum of 6c in CH2Cl2.

Normalized PL spectra of 4 in dichloromethane solution at 298 K, in an alcoholic glass (4: 1 EtOH/MeOH) at 77 K and in solid state at 298 K.