Synthesis of gold nanoplates by aspartate reduction of gold chlorideElectronic supplementary information (ESI) available: Fig. S1. UV/Visible-NIR extinction spectra of an aqueous dispersion of gold nanoparticles synthesized by tyrosine (a), phenylalanine (b), lysine (c), aspartate (d) and tryptophan (e). See http://www.rsc.org/suppdata/cc/b3/b315732f/

Abstract

Single crystal nanoplates with thickness less than 30 nm, characterized by hexagonal and truncated triangular shapes bounded mainly by [111] facets, were obtained in large quantities by aspartate reduction of gold chloride.

Functionalization of gold nanoparticles with amino acid, β-amyloid peptides and fragment

“…For observation of the gold nanoparticles, UV-vis measurement was performed. The absorbance maximum of the plasmon band appearing in the spectrum was at max ∼ 530 nm, which result is in good agreement with the earlier findings in the literature [1,2].…”

“…It is also well-known that the spectral parameters of NP-containing dispersions also depend on the size and shape of the particles [3,4]. For example, in the case of Au NPs (particle diameter ∼10-20 nm) the observed absorbance maximum ( max ) in the visible spectrum is ∼525 nm [1,2]. Parallel with enlargement of the size and/or formation of aggregates, a red shift of the band or appearance of other new plasmon band at higher wavelength can be also observed [1,3].…”

“…Numerous methods for preparation of noble (Au, Ag) nanoparticles (NPs) are found in the literature [1,2]. It is also well-known that the spectral parameters of NP-containing dispersions also depend on the size and shape of the particles [3,4].…”

Nanosized silver–palm pollen nanocomposite, green synthesis, characterization and antimicrobial activity

“…4c shows that the Ag NPs are spherical in shape and polydispersed without other observable nanostructure morphologies, as verified by the absorbance spectrum; and the size of NPs are in the range of 25-35 nm. Control of the morphology and size of the resultant nanostructures can be associated with the interactions between biomolecules and metal atoms [28]. The purity of the bioformed Ag NPs was examined by EDX (Fig.…”

Green Synthesis of Metal Nanoparticles by Plants: Current Trends and Challenges

“…It is believed that the primary compounds responsible for the reduction of metal ions by plants are amino acids [ 29 ], citric acid [ 5 ], fl avonoids [ 30 ], phenolic compounds [ 31 ], terpenoids [ 32 ], heterocyclic compounds [ 33 ], enzymes [ 34 ], peptides [ 35 ], polysaccharides [ 36 ], saponins [ 37 ], tannins [ 38 ], among others.…”