| This research addresses the growing need for efficient, versatile, well-controlled routes to one-dimensional (1D) nanostructures---that is wires, rods, belts, and tubes whose lateral dimensions fall in the range of 1 to 100 nm.; We devote our attention specifically to solution-phase methods because of the relative ease of synthesis, and copious quantities that can be obtained when compared to conventional lithographic approaches. This work presents an overview of three synthetic strategies that we have exploited to achieve 1D growth. These strategies include: (i) anisotropic growth dictated by the crystallographic structure of a solid material; (ii) anisotropic growth kinetically controlled by supersaturation or through the use of an appropriate capping reagent; and (iii) anisotropic growth confined and directed by various templates. Each of these chemical approaches is discussed in detail. Selenium and tellurium are presented as an ideal system for 1D growth due to their inherently anisotropic crystal structure. The use of capping agents as an impetus for 1D growth is demonstrated in the synthesis of silver nanowires. A variety of template-engaged syntheses are presented to illustrate the versatility of the template approach for generating interesting materials and morphologies.; Mild reaction conditions, low cost, and high throughput are typical characteristics for each of these solution-phase syntheses. Some potential applications for these 1D nanostructures are also discussed. These applications include the assembly of 1D nanostructures into functional devices and their potential use as sensors and catalysts. |
