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. Author manuscript; available in PMC: 2010 Jan 1.
Published in final edited form as: Nano Lett. 2009 Jan;9(1):317–321. doi: 10.1021/nl8030482

Figure 2.

Figure 2

A) Melting transitions (monitored at 520 nm) for aggregates of DNA-Au NPs functionalized with sequences containing 2 and 3 base pair recognition elements. B) The “slipping” interactions possible for a ‘two-particle’ model for DNA-AuNPs functionalized with TCGC–. C) The “slipping” interactions possible in a ‘two-particle’ model for DNA-AuNPs functionalized with TGCG–. In B) and C), black lettering indicates bases involved in normal Watson-Crick interactions, gray lettering indicates bases involved in non-Watson-Crick “slipping” interactions, and white lettering indicates bases that are not involved in hybridization. Similar melting behavior also was observed at 260 nm.