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. Author manuscript; available in PMC: 2015 Aug 1.
Published in final edited form as: Biomaterials. 2014 Jun 10;35(26):7271–7285. doi: 10.1016/j.biomaterials.2014.05.036

Figure 4.

Figure 4

Fourier transformed infrared spectroscopy (FTIR) spectrum of unmodified E2As polymer (top red), HMDI- (second red) or PEG-DI-linked E2As intermediate (green) and argatroban/HMDI (blue) or PEG-DI/E2As (purple). Broad peak between 3000–3600 cm−1 incorporates most of the secondary and tertiary amines of argatroban while the peak near 2250 cm−1 shows the reduction of peak following grafting of argatroban to HMDI- or PEG-DI-linked intermediates.