Figure 3

Co-deposition and labeling. (a) The incorporation of molecules carrying amine functional groups into AMN coatings during deposition and post-deposition labeling was demonstrated using the XPS label TFEA. (b) The incorporation of aldehydes, exemplified by the XPS label TFAEH, was demonstrated both during coating formation and post-deposition labeling, with greater incorporation of the aldehyde achieved during co-deposition (n=3, error bars are the same size as markers). (c) The ability of AMN coatings to undergo subsequent reactions with an electrophile was exemplified using the XPS label BBB and the non-reactive control compound 1,4-dibromobenzene (DBB). AMN, aminomalononitrile; TFAEH, trifluoroacetaldehyde ethyl hemiacetal; TFEA, 2,2,2-trifluoroethylamine; XPS, X-ray photoelectron spectroscopy.