Citrate-reduced silver hydrosol modified with w-mercaptoalkanoic acids self assembled monolayers as a substrate for surface-enhanced resonance raman scattering. A study with cytochrome c

A. Bonifacio, L. van der Sneppen, C. Gooijer, G. van der Zwan

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

A new citrate-reduced silver hydrosol coated with ω-mercaptoalkanoic acids (mercaptopropionic and mercaptoundecanoic acids) self-assembled monolayers was prepared and characterized with surface-enhanced Raman spectroscopy. The structure and the quality of the coating monolayers are discussed and compared to similar coated and uncoated silver hydrosols previously developed. As an application, the new hydrosol was used as a biocompatible and efficient metal substrate for a surface-enhanced resonance Raman scattering (SERES) study of cytochrome c. The high-quality SERRS spectra reported of cytochrome c (obtained using only 1 μL of a micromolar cytochrome solution) are discussed and compared with data available from literature studies.
Original languageEnglish
Pages (from-to)5858-5864
JournalLangmuir
Volume20
DOIs
Publication statusPublished - 2004

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