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. Author manuscript; available in PMC: 2014 Feb 18.
Published in final edited form as: Inorg Chem. 2013 Feb 7;52(4):2044–2049. doi: 10.1021/ic3024265

Figure 4.

Figure 4

Time-resolved fluorescence spectra demonstrating the release of Hoechst cargo from nanogates assembled from nickel(II) (black trace) and calcium latches (red trace). No cargo release is observed from the nickel latched nanogates until the solution pH is adjusted to pH 5. Cargo release is observed from the calcium latched nanogates after adjusting the solution to a pH of 6, as a result of the lower binding constants between IDA and calcium. Release via competitive chelation is also demonstrated for the nickel latched nanogate (Figure S5).