title: Lamellar phase supported synthesis of colloidal gold nanoparticles, nanoclusters, and nanowires.
abstract: Gold nanoparticles (Au NP) have been synthesized in aqueous phase under ambient conditions in the presence of a series of various cationic double chain as well as dimeric (gemini) surfactants. The spacer chain and twin tail length of these surfactants has been systematically varied to see the effect of hydrophobicity on their capping ability. It has been observed that the increase in the length of spacer chain (from 12-2-12 to 12-6-12) and twin tails (from 10-2-10 to 14-2-14) significantly increases the lamellar phase formation and which in return acts as a wonderful template to accommodate the NP in the form of nanoclusters and nanowires. The lamellar phase practically facilitates the nucleation of Au degrees and produces large NP (15 +/- 2 nm). All reactions have also been carried out in the presence of beta-cyclodextrin (CYC) which has strong ability to complex with surfactant tail. The presence of CYC induces a tendency to form nanowire and it is more prominent in the case of surfactants with longer spacer group.
authors: Department of Ob/Gyn and Biochemistry, University of Western Ontario, London, ON, Canada.
authors: Mandeep Singh
authors: MS
authors: Bakshi
authors: Poonam
authors: P
authors: Sharma
authors: Tarlok Singh
authors: TS
authors: Banipal
authors: Gurinder
authors: G
authors: Kaur
authors: KanjiroTorigoe
authors: Nils O
authors: NO
authors: Petersen
authors: Fred
authors: F
authors: Possmayer
mesh_terms: D017979:Gold Colloid / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D008823:Micelles; D008854:Microscopy, Electron; D008958:Models, Molecular; D036103:Nanotechnology; D053770:Nanowires / Q000737:chemistry* / Q000648:ultrastructure; D012996:Solutions; D013501:Surface-Active Agents; D014867:Water
chemical_list: D017979:Gold Colloid; D008823:Micelles; D012996:Solutions; D013501:Surface-Active Agents; D014867:Water