Direct Growth of Optically Stable Gold Nanorods onto Polyelectrolyte Multilayered Capsules

The versatile preparation of the polyelectrolyte multilayered capsules functionalized with gold nanorods (AuNRs) is described. By seed-mediated growth of AuNR directly onto the capsules, stable complexation of the AuNRs onto the capsules can be achieved (see image). The resulting capsules show improved optical stability over free AuNRs, as well as tunable optical property depending on aspect ratio of the AuNRs.