title: Biological synthesis of silver and gold nanoparticles using apiin as reducing agent.
abstract: We report a novel strategy for the biological synthesis of anisotropic gold and quasi-spherical silver nanoparticles by using apiin as the reducing and stabilizing agent. The size and shape of the nanoparticles can be controlled by varying the ratio of metal salts to apiin compound in the reaction medium. The resultant nanoparticles were characterized by UV-vis-NIR, transmission electron microscopy (TEM), FT-IR spectroscopy, X-ray diffraction (XRD) and thermogravimetric analysis (TGA). The interaction between nanoparticles with carbonyl group of apiin compound was confirmed by using FT-IR analysis. TEM photograph confirming the average size of the gold and silver nanoparticles were found to be at 21 and 39 nm. The NIR absorption of the gold nanotriangles is expected to be of application in hyperthermia of cancer cells and in IR-absorbing optical coatings.
authors.affiliation: Department of Chemistry, S.R.M. University, Faculty of Engineering and Technology, Chennai 603203, Tamil Nadu, India.
authors.forename: J
authors.initials: J
authors.lastname: Kasthuri
authors.forename: S
authors.initials: S
authors.lastname: Veerapandian
authors.forename: N
authors.initials: N
authors.lastname: Rajendiran
mesh_terms: D005419:Flavonoids / Q000737:chemistry* / Q000302:isolation & purification; D006046:Gold / Q000737:chemistry*; D031564:Lawsonia Plant / Q000737:chemistry; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry; D019163:Reducing Agents / Q000737:chemistry* / Q000302:isolation & purification; D012834:Silver / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013818:Thermogravimetry; D014961:X-Ray Diffraction
chemical_list: D005419:Flavonoids; D019163:Reducing Agents; D012834:Silver; C012186:apiin; D006046:Gold