TABLE II.

Summary of the representative publications for increasing absorption yield of phthalocyanine/naphthalocyanine nanoparticles. ${\lambda }_{\mathit{\text{max}}}$, maximum absorption wavelength; $ϵ$, molar extinction coefficient; O.D., optical density; $\zeta$, zeta potential; FL, fluorescence.

Group	Nanomaterial	${\lambda }_{\mathit{\text{max}}}$ (nm)	Monomer/assembly size (nm)	$ϵ$ [O.D.]	Major features
Liu et al.81	Hydrophobized zinc Pc complex	680	−/20–100	8.9 (P-NP);	• Hydrophobizing characterization with oxazoline block copolymer,
				7.4 ( N-NP)	• $\zeta$ = P-Pc: +29 mV; N-Pc: −43.8 mV
Li et al.54	PcS4-PcN4 complex	694	0.5–3/30–100	⋯	• Total FL self-quenching identified at 610 nm