Abstract
This study presents the static time-of-flight secondary ion mass spectrometry (TOF-SIMS) spectra of 15 poly(amino acids), solvent or spin cast onto either mica or silicon substrates. These poly(amino acid) spectra are useful for interpreting the complex static TOF-SIMS spectra obtained from adsorbed protein films and peptide-functionalized surfaces. Previous studies have reported poly(amino acid) spectra acquired with a quadrupole SIMS instrument. The spectra obtained with a TOF-SIMS instrument in this study have significantly higher sensitivity and mass resolution, which are essential for producing good, high-quality reference spectra.
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