Yu-Long Sun, Yue Zhou, Qing-Lan Li and Ying-Wei Yang
Chem. Commun., 2013,49, 9033-9035
DOI:
10.1039/C3CC45216F,
Communication
Mesoporous silica nanoparticles (MSNs) have been surface-functionalized with choline moieties encircled by sulfonatocalix[4]arenes. Two enzyme cleavable sites are incorporated in the stalks for specific enzymes to regulate the release of loaded cargos from MSNs. These gated materials show a clear enzymatic response and proven orthogonality.