Templating Iron(III) Oxides on DNA Molecules.

ABSTRACT: Fe(III) oxides were prepared as free nanoparticles and on DNA templates via the precipitation of Fe(III) salts with NaOH in the presence/absence of DNA. Through control of the pH and temperature, FeOOH and Fe₂O₃ were synthesised. The formation of templated materials FeOOH/DNA and Fe₂O₃/DNA was confirmed using UV-Vis absorption and FTIR spectra. The direct optical gap of Fe₂O₃/DNA was estimated as 3.2 eV; the absorption by FeOOH/DNA and Fe₂O₃/DNA at longer wavelengths is weaker, but consistent with indirect gaps near 2 eV. X-ray photoelectron spectra confirmed the presence of Fe(III) and DNA in the templated samples. Analysis of the X-ray diffraction patterns of both templated and non-templated FeOOH and

SUBMITTER: Zubairu SM 

PROVIDER: S-EPMC11478027 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature