Transition Metal Ion-induced Anisotropic Architectures Using 4,4’-dicarboxy-2,2’-bipyridyl-silver Nanopetals

Designing anisotropic nano- and micro-structures are imperative in many technology oriented fields. Here we have reported a self templating method, where flower like microstructure of silver particles were used as template to generate several anisotropic structures such as rectangular cum dumbbell, cubes, hexagonal whiskers, and rectangular bars etc. under controlled catalytic activity of Co 2+ , Ni 2+ , Cu 2+ , and Zn 2+ respectively. The initial flower like microstructure (template) of silver particles have been prepared from silver salt using disodium salt of 4,4’-dicarboxy-2,2’-bipyridyl(Na2dcbpy) as the reducing as well as capping agent. Then this architecture was used as the initial template to generate several anisotropic structures. The straightforward anisotropic microstructure preparation procedure does not require any other external template, which avoids the subsequent complicated workup. The nucleation processes and optical properties were studied using optical absorption