Summary of the optical and the electrochemical data of compounds TPA-PTZ-BDP, PTZ-TPA-BDP and N-PTZ-BDP.

Dye	λ a (nm)	λ max b (nm)	ε max	λ onset (nm)	E opt (eV)	E 1/2ox (V)	E 1/2red (V)	IP (eV)	EA (eV)	E fund (eV)
TPA-PTZ-BDP	335	711	4.4 × 104	754	1.64	0.23	−1.40	−5.03	−3.40	1.63
	686
PTZ-TPA-BDP	355	717	6.2 × 104	777	1.59	0.20	−1.38	−5.00	−3.42	1.58
	697
N-PTZ-BDP	334	721	6.3 × 104	786	1.57	0.26	−1.30	−5.06	−3.50	1.56
	702

^aMeasured in DCM solution.

^bMeasured in thin film.