- Sakai, N.; Matile, S. “Stack Exchange Strategies for the Synthesis of Covalent Double-Channel Photosystems by Self-Organizing Surface-Initiated Polymerization” J. Am. Chem. Soc. 2011, 133, 18542-18545
Ring-opening disulfide exchange polymerization has been identified recently as ideal to synthesize single-channel photosystems by self-organizing surface-initiated polymerization (SOSIP). Here, we introduce chemoorthogonal hydrazone exchange chemistry to engineer additional channels into single-channel photosystems. Post-SOSIP stack exchange is shown to provide facile access to complete supramolecular n/p-heterojunction architectures with high activity and freely variable composition, including oriented antiparallel redox gradients. With appropriate templation from the surface, post-SOSIP stack exchange is nearly quantitative.