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- Biocompatible Polyurea Dendrimers with pH‐Dependent FluorescencePublication . Restani, Rita; Morgado, Patrícia I.; Ribeiro, MP.; Correia, I.J.; Ricardo, Ana Aguiar; Bonifácio, VascoBiocompatible and biodegradable water‐soluble dendrimers comprising ureas within the interior and amino groups on the periphery were synthesized in supercritical carbon dioxide (dendrimer of generation 1 shown in picture). This novel class of dendrimers shows a pH‐dependent intrinsic blue fluorescence at very low concentrations, which makes them potential polymeric fluorescent cell markers.