Nanoparticles: Modulation of Interparticle Distance in Discrete Gold Nanoparticle Dimers and Trimers by DNA Single‐Base Pairing (Small 26/2015)

The interparticle distance in gold nanoparticle trimers is modulated by T. Takarada and co-workers on page 3153. Each particle has one long DNA (green) and several short DNAs (orange). The long DNA serves to align the particles on a template DNA (purple). When the complementary DNA (blue) is hybridized to the short DNA, the interparticle distance is spontaneously decreased in the presence of salt (right front). However, no shrinkage occurs with the terminal-mismatched DNA (yellow) under the same conditions (left front).