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DOSY spectra of unmodified PPI-CB1 dendrimer 3, alkyne-modified 6a PPI-CB1, and azide-modified 6b PPI-CB1 (both n = 3). In the functionalized dendrimers, the most indicative 1H signal is labeled by a star (*). In all three spectra, the signals in the highlighted band correspond to the ZID, and the signals at 4.8 and 0.0 ppm represent water and TMS, respectively. Furthermore, theoretical molecular weights (at full conversion) are given.
