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. Author manuscript; available in PMC: 2009 Mar 26.
Published in final edited form as: J Am Chem Soc. 2008 Mar 4;130(12):3892–3899. doi: 10.1021/ja076553s

Figure 6.

Figure 6

TEM images of linear PA: nonirradiated (A) and irradiated (B). Samples were stained with phosphotungstic acid for approximately 1–3 min. Irradiated samples were exposed (256 nm) for 2 min.