Fig. 9. Dimeric PNs and characterization. (a and b) FRET fluorescence pairs formed using CB[8] host–guest interactions. Adapted with permission from ref. 77 and 106. Copyright 2010 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, 2011 Royal Society of Chemistry. (c) Switchable enzyme cascade using DNA hybridization. Adapted with permission from ref. 197. 2014 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim (d) streptavidin bioconjugate formed by assembly of three PAMAM dendrimer branches (dendrons) and the respective cargo protein p53. Narrow size distribution was shown in DLS. Adapted with permission from ref. 51. 2013 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.