Femtosecond Laser-Controlled Tip-to-Tip Assembly and Welding of Gold Nanorods.

ABSTRACT: Directed assembly of gold nanorods through the use of dithiolated molecular linkers is one of the most efficient methodologies for the morphologically controlled tip-to-tip assembly of this type of anisotropic nanocrystals. However, in a direct analogy to molecular polymerization synthesis, this process is characterized by difficulties in chain-growth control over nanoparticle oligomers. In particular, it is nearly impossible to favor the formation of one type of oligomer, making the methodology hard to use for actual applications in nanoplasmonics. We propose here a light-controlled synthetic procedure that allows obtaining selected plasmonic oligomers in high yield and with reaction times in the scale of minutes by irradiation with low fluence near-infrared (NIR) femtosecond laser pulses

SUBMITTER: Gonzalez-Rubio G 

PROVIDER: S-EPMC4898861 | biostudies-literature | 2015 Dec

REPOSITORIES: biostudies-literature