Surface enhanced Raman evidence for Ag+ complexes of adenine, deoxyadenosine and 5'-dAMP formed in silver colloids

Evanthia Papadopoulou, Steven E J Bell

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

We report the formation of highly scattering silver complexes of adenine, deoxyadenosine and 5'-dAMP under alkaline pH conditions in the colloidal silver solutions which are used for surface-enhanced Raman spectroscopy. These complexes, and other pH-dependent phenomena, help to explain the diversity of previously reported adenine SERS spectra. Using conditions which promote complex formation allows nucleotides to be detected at <1 ppm, even in solutions with high salt concentrations.

Original languageEnglish
Pages (from-to)3034-3037
Number of pages4
JournalAnalyst
Volume135
Issue number12
Early online date28 Sep 2010
DOIs
Publication statusPublished - 2010

Keywords

  • Adenine
  • Adenosine Monophosphate
  • Colloids
  • Deoxyadenosines
  • Hydrogen-Ion Concentration
  • Molecular Structure
  • Salts
  • Silver
  • Silver Compounds
  • Spectrum Analysis, Raman
  • Surface Properties

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