Piperidine-Substituted Perylene Sensitizer for Dye-Sensitized Solar Cells

Table 1

Physical properties of PK0003 and PK0002.

Compound	Absorption(a)		Fluorescence(a)		Absorption on TiO2 film	IP	𝐸^0-0(c)	LUMO(d)
	𝜆max/nm	𝜀×10^−4/M^−1cm^−1	𝜆ex/nm^(b)	𝜆fluor/nm^(b)	𝜆max/nm	(eV)	(eV)	(eV)
PK0003	489	1.0	516	543	450	−5.88	2.07	−3.81
PK0002	544	1.6	580	655	500	−5.60	1.77	−3.83

(a)In CHCl₃.
(b)At emission maximum.
^(c)𝐸^0-0 values were estimated from the 5% intensity level of the absorption spectra on TiO₂.
(d)Calculated from 𝐸^∗(LUMO)=𝐸(IP)−𝐸^0-0.