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Keywords:

  • MALDI;
  • polycondensation;
  • guanidine;
  • biocides

Abstract

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Oligomeric guanidines can be obtained by polycondensation of guanidine hydrochloride and 1,2-bis(2-aminoethoxy)ethane. A comparative MALDI-TOF mass spectrometry/NMR spectroscopy study with a 13C-labeled sample enabled the unambiguous analysis of a guanidine-based polymer. Among the four major product series unprecedented macrocyclic compounds were detected. The minimum inhibition concentrations for four different microorganisms were determined, showing excellent biocidal activities.