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. Author manuscript; available in PMC: 2012 Jan 12.
Published in final edited form as: Chemistry. 2011 Jan 24;17(9):2656–2665. doi: 10.1002/chem.201001533

Figure 2.

Figure 2

Narrow scan of a) Ge 3d and b) N 1s regions for substrate 1a before (bottom spectra) and after (top spectra) click reaction in solution containing CuSO4 (2.5 mM) and ascorbic acid (10 mM) for 6 h.