title: Surface plasmon resonance optical sensor and antibacterial activities of biosynthesized silver nanoparticles.
abstract: Silver nanoparticles were prepared using aqueous fruit extract of Ananas comosus as reducing agent. These silver nanoparticles showed surface plasmon peak at 439 nm. They were monodispersed and spherical in shape with an average particle size of 10 nm. The crystallinity of these nanoparticles was evident from clear lattice fringes in the HRTEM images and bright circular spots in the SAED pattern. The antibacterial activities of prepared nanoparticles were found to be size-dependent, the smaller nanoparticles showing more bactericidal effect. Aqueous Zn(2+) and Cu(4+) selectivity and sensitivity study of this green synthesized nanoparticle was performed by optical sensor based surface plasmon resonance (SPR) at room temperature.
authors.affiliation: Department of Physics, Mother Teresa Women's University, Kodaikanal 624101, Tamil Nadu, India.
authors.forename: M R
authors.initials: MR
authors.lastname: Bindhu
authors.affiliation: Department of Physics, Mother Teresa Women's University, Kodaikanal 624101, Tamil Nadu, India. Electronic address: ums10@yahoo.com.
authors.forename: M
authors.initials: M
authors.lastname: Umadevi
mesh_terms: D031230:Ananas / Q000737:chemistry; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D015374:Biosensing Techniques; D003300:Copper / Q000032:analysis; D004926:Escherichia coli / Q000187:drug effects; D007477:Ions; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D008826:Microbial Sensitivity Tests; D055620:Optical Phenomena; D010936:Plant Extracts / Q000737:chemistry; D011511:Proteus / Q000187:drug effects; D012834:Silver / Q000494:pharmacology*; D013052:Spectrometry, X-Ray Emission; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared; D020349:Surface Plasmon Resonance; D014867:Water / Q000737:chemistry; D014961:X-Ray Diffraction; D015032:Zinc / Q000032:analysis
chemical_list: D000900:Anti-Bacterial Agents; D007477:Ions; D010936:Plant Extracts; D014867:Water; D012834:Silver; D003300:Copper; D015032:Zinc
keywords: Ananas comosus; Antibacterial activity; Copper sensor; Silver nanoparticles; Surface plasmon resonance; Zinc sensor