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. Author manuscript; available in PMC: 2013 Feb 24.
Published in final edited form as: ACS Macro Lett. 2012 Feb 24;2012(1):384–387. doi: 10.1021/mz200118f

Figure 1.

Figure 1

Sequential deposition of (silk/PMAA)n (A), (silk/TA)n (B), and (silk/PVCL)n (C) from 0.5 mg/mL solutions at pH 3.5 as monitored by in situ ATR-FTIR. Silk random-coil conformation is presented by the vibrational peaks at 1644 cm−2 (A, B, and C). The absorption bands associated with protonated carboxylic groups (–COOH) are centered at 1700 cm−1 (A); carbonyl vibration band of the TA ester groups is located at 1716 cm−1 (B); and carbonyl of PVCL is centered at 1610 cm−2 (C). Evolution of total film disintegration as followed by in situ ATR-FTIR in the 1550–1800 cm−1 range (D).