A new route to obtain shape-controlled gold nanoparticles from Au(III)-beta-diketonates.
Ligands with a beta-diketone skeleton have been employed for the first time as reductant to produce ligand stabilized gold nanoparticles of different shapes from aqueous HAuCl(4) solution. Evolution of stable gold nanoparticles follows first order (k approximately equal to 10(-2) min(-1)) kinetics with respect to Au(0) concentration. Growth of particles of different shapes (spherical or triangular or hexagonal) goes hand in hand under the influence of different beta-diketones, which have excellent capping and reducing properties. Chlorine insertion was observed to take place in the beta-diketone skeleton.
Kundu
Subrata
S
Departments of Chemistry and Civil Engineering, Indian Institute of Technology, Kharagpur 721302, India.
Pal
Anjali
A
Ghosh
Sujit Kumar
SK
Nath
Sudip
S
Panigrahi
Sudipa
S
Praharaj
Snigdhamayee
S
Pal
Tarasankar
T