Interactions between selected photosensitizers and model membranes: an NMR classification

► 1H-NMR allows to study and model porphyrin membrane interactions. ► Porphyrin uptake by model membranes consists of two main steps. ► Porphyrin structural properties affect rate and amount of membrane uptake. ► High porphyrin lipophilicity and/or amphiphilicity yield high membrane loadings.