Porphyrin Nanofiber Bundles from Phase‐Transfer Ionic Self‐Assembly and Their Photocatalytic Self‐Metallization

Porphyrin nanofiber bundles (see figure) are synthesized by a novel phase-transfer ionic self-assembly technique, allowing the use of a wide range of water-insoluble porphyrin tectons. Their photocatalytic self-metallization with Pt, Au, Ag, or Pt–Au alloys result in unusual porphyrin–metal composite nanostructures with potential applications in catalysis, sensing, and solar hydrogen production.