DNA Binding to Fluorescent Ruthenium Species Released from Calcium Phosphate/Nanoporous Silicon Structures
Abstract:This work centers on an analysis of calf thymus DNA binding to emissive Ru complexes which diffuse from biocompatible calcium phosphate/nanoporous silicon films. These nanostructures were characterized by scanning electron microscopy, atomic force microscopy, energy dispersive X-ray analysis, and infrared vibrational spectroscopy. In terms of polynucleotide binding, three different systems were analyzed: (1) an aqueous solution of Ru(phen)32+ (a control); (2) surface-adsorbed Ru(phen)32+ onto undoped calcium phosphate/porous Si/Si in aqueous solution; (3) as-prepared and annealed Ru(phen)32+-doped calcium phosphate/porous Si structures in water. For films with fluorescent Ru originally embedded throughout the film, biphasic diffusion character is found; such behavior is attributed to DNA binding to both surface-bound Ru(phen)32+ and species which originate from deeper regions of the film.
Document Type: Research Article
Affiliations: Department of Chemistry, Texas Christian University, Ft. Worth, Texas, USA
Publication date: 2002-07-01
More about this publication?
- 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.
- Editorial Board
- Information for Authors
- Subscribe to this Title
- Terms & Conditions
- Ingenta Connect is not responsible for the content or availability of external websites