Photophysical, Photochemical, and BQ Quenching Properties of Zinc Phthalocyanines with Fused or Interrupted Extended Conjugation

Table 1

Spectral parameters of 1a–1d and 2a–2d in DMSO, DMF, and THF.

Solvent	Complex	Q band	Excitation	Emission	Stokes shift
		𝜆max, (nm)	𝜆Ex, (nm)	𝜆Em, (nm)	ΔStokes, (nm)
DMSO	1a	677	678	689	12
DMF		674	676	686	12
THF		672^a	672	682	10
DMSO	1b	685	689	697	12
DMF		682	683	693	11
THF		679^a	687	694	15
DMSO	1c	686	690	696	10
DMF		682	685	691	9
THF		678^a	681	686	8
DMSO	1d	681	687	696	15
DMF		680	681	690	10
THF		679^a	681	690	11
DMSO	2a	685	707	717	32
DMF		685	699	718	33
THF		683^b	690	702	19
DMSO	2b	720	742	748	28
DMF		713	729	734	21
THF		708^b	713	710	2
DMSO	2c	718	720	728	10
DMF		710	712	721	9
THF		705^b	705	712	7
DMSO	2d	720^b	727	730	10
DMF		714^b	727	746	32
THF		711^b	725	730	19
DMSO	ZnPc	672^c	672^c	682^c	10
DMF	ZnPc	670^d	670^d	676^d	6
THF	ZnPc	666^e	666^e	673^e	7

aReference [21].
^bReference [22].
^cReference [25].
^dReference [26].
^eReference [27].