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. 2012 Dec 5;13(12):16598–16623. doi: 10.3390/ijms131216598

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© 2012 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.

This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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(A) Single-step FRET-based QD biosensors designed to probe DNA degradation. (B)The two-step QD-FRET system includes the first energy transfer from QD to Dye 1 in polymeric matrix and then the second energy transfer from Dye 1 to DNA-labeling Dye 2; (C) The FRET between ssDNA-UCNPs and GO for ATP sensing; (D) The enzyme-responsive multicolor gold nanobeacon for multiplex detection of endonuclease activity.

(A) Single-step FRET-based QD biosensors designed to probe DNA degradation. (B)The two-step QD-FRET system includes the first energy transfer from QD to Dye 1 in polymeric matrix and then the second energy transfer from Dye 1 to DNA-labeling Dye 2; (C) The FRET between ssDNA-UCNPs and GO for ATP sensing; (D) The enzyme-responsive multicolor gold nanobeacon for multiplex detection of endonuclease activity.