Hybrid One-DimensionalNanostructures: One-Pot Preparationof Nanoparticle Chains via Directed Self-Assembly of in Situ SynthesizedDiscrete Au Nanoparticles.

The fabrication of well-defined one-dimensional (1D)arrays isbecoming a challenge for the development of the next generation ofadvanced nanodevices. Herein, a simple concept is proposed for thein situ synthesis and self-assembly of gold nanoparticles (AuNPs)into 1D arrays via a one-step process. The results demonstrated theformation of nanoparticle chains (NPC) with high aspect ratio basedon discrete Au nanoparticles stabilized by short thiol ligands. Amodel was proposed to explain the self-assembly based on the investigationof several parameters such as pH, solvent, temperature, and natureof the ligand on the 1D assembly formation. Hydrogen bonding was identifiedas a key factor to direct the self-assembly of the hybrid organic–inorganicnanomaterials into the well-defined 1D nanostructures. This simpleand cost-effective concept could potentially be extended to the fabricationof a variety of hybrid 1D nanostructures possessing unique physicalproperties leading to a wide range of applications including catalysis,bionanotechnology, nanoelectronics, and photonics. [ABSTRACT FROM AUTHOR]