Synthesis and characterization of gold nanodogbones by the seeded mediated growth method

摘要

Novel gold nanodogbones ( GDBs) are successfully fabricated using a simple seeded mediated growth ( SMG) method. The shapes of GDBs depend on the amount of added vitamin C solvent. The amount of vitamin C solvent was varied from 10 to 40 mu l to investigate the influence of vitamin C solvent on the GDBs. It is found that the aspect ratios ( R) of GDBs were in the range from 2.34 to 1.46, and the UV - vis absorption measurement revealed a pronounced blueshift on the longitudinal surface plasmon resonance ( SPR) band from 713 to 676 nm. The GDBs were determined by x- ray diffraction ( XRD) to be single- crystalline with a face-centered cubic ( fcc) structure. The lattice constant calculated from this selected- area electron diffraction ( SAED) pattern is 4.068 angstrom.