Asymmetrically functionalized gold nanoparticles organized in one-dimensional chains

Organized assembly remains a major challenge for optimizing and extending the application of nanoparticles. Here we report a simple method to assemble spherical gold nanoparticles (AuNPs) in one-dimensional (1D) chains. The chain-forming process takes advantage of asymmetrically functionalized AuNPs that serve as building blocks. The 1D AuNP chains were prepared by covalent attachment of spatially localized functional groups on the AuNPs to polymer backbone pendent groups. We demonstrate control of interparticle spacing and the preparation of 1D chains containing AuNPs of different sizes.