Porphyrin–Peptoid Conjugates: Face-to-Face Display of Porphyrins on Peptoid Helices

Distance, orientation, and number controlled porphyrin–peptoid conjugates (PPCs) were efficiently synthesized. Cofacial (1, 2, and 4), slipped-cofacial (3), and unstructured (5) arrangements of porphyrins provided distinct optical and electronic properties characterized by UV–vis and circular dichroism spectroscopy. In addition, ECCD spectra confirmed the handedness of peptoid helices.