title: Environmentally benign in situ synthesis of gold nanotapes using carboxymethyl cellulose.
abstract: An environmentally friendly one-step wet-chemical approach has been described for controlling the shape of gold nanocrystals at ambient temperature. In this approach, sodium salt of carboxymethyl cellulose (NaCMC) has been used as a reducing-cum-stabilizing agent for the in situ generation of gold nanotapes from an aqueous chloroaurate ion. Transmission electron microscopy confirmed the formation of tape-shaped gold nanostructures. These gold nanotapes exhibited interesting optical properties. The nature of crystallinity of the nanotapes has been studied by X-ray diffractometry. Control experiments with other cellulose derivatives resulted in the formation of only spherical gold nanoparticles.
authors.affiliation: Polymer Science Unit and Centre for Advanced Materials, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India.
authors.forename: Rama Ranjan
authors.initials: RR
authors.lastname: Bhattacharjee
authors.forename: Md Harunar
authors.initials: MH
authors.lastname: Rashid
authors.forename: Tarun K
authors.initials: TK
authors.lastname: Mandal
mesh_terms: D002266:Carboxymethylcellulose Sodium / Q000737:chemistry*; D003460:Crystallization; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles / Q000737:chemistry; D049329:Nanostructures / Q000737:chemistry; D036103:Nanotechnology / Q000379:methods*; D055095:Optics and Photonics; D020349:Surface Plasmon Resonance; D013696:Temperature; D014961:X-Ray Diffraction; D014965:X-Rays
chemical_list: D006046:Gold; D002266:Carboxymethylcellulose Sodium