Gold Nanosponges: Green Synthesis, Characterization, and Cytotoxicity
A simply approach for the synthesis of Au nanostructures in tea infusions at room temperature is developed. By controlling the concentrations of tea infusions, Au nanostructures in various shapes and sizes have been prepared. From 1× (original concentration) and 0.01×(100 times diluted) tea infusions, 52.2±8.1 nm Au nanosponges (T-Au NSs) and 23±2 nm spherical Au nanoparticles (T-Au NPs) were prepared. The phytochemicals present on the surface of T-Au NSs were proved by surface-assisted laser desorption/ionization mass spectrometry, Fourier transform infrared spectrometry and capillary electrophoresis coupled with UV detection. The energy-dispersive X-ray spectroscopy and powder X-ray diffraction data reveal pure crystalline structures of the T-Au NSs. The dark field scattering images observe that the T-Au NSs have significant affinity toward HeLa cells. The cytotoxicity of T-Au NSs on HeLa cells is through caspase-3 activation.
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Document Type: Research Article
Publication date: 2013-10-01
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- Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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