Skip to main content
. 2011 Nov 7;12(12):4326–4334. doi: 10.1021/bm201261d

Figure 2.

Figure 2

Characterization of the cAAPEG macromonomer. Matrix-assisted laser deionization (MALDI) mass spectrometry (a) confirmed the changes in molecular mass expected during stepwise synthesis of cAAPEG macromonomer (∼12 kDa). UV–vis spectrophotometry of cAAPEG macromonomer (b) revealed a peak at 280 nm corresponding to catechol, with little evidence of oxidized species (>300 nm). Structural confirmation of cAAPEG macromonomer by 1H NMR (c) was performed in deuterated chloroform; peak assignments corresponding to PEG backbone, Ala-Ala linker, and catechol protons are indicated in italics.