Mesoporous alloy chiral nanoparticles with high production yield and strong optical activities

Applying galvanic replacement reactions (GRRs) to the host chiral nanoparticles (CNPs) is an exclusive method to generate alloy CNPs with mesoporous structures through chirality transfer. However, the GRR-mediated chirality transfer is too inefficient to impose strong optical activities on the alloy mesoporous CNPs (or m-CNPs). Here we dope the host with gold (Au) to significantly enhance the chirality transfer, and additionally employ the Au adhesion layer to increase the production yield (PY) of binary m-CNPs. Gold functions as an adhesion layer and a dopant in the host silver chiral nanoparticles (CNPs), leading to high production yield and strong optical activities of binary mesoporous CNPs generated by galvanic replacement reactions of the host.