Catch and release: Bridged silsesquioxanes act as organic–inorganic precursors for nanospheres to encapsulate bioactive molecules for drug-delivery applications. The nanosystems (see picture) are constructed from an liposomal core containing bioactive molecules and an network shell formed by silica and organic ester fragments that can act as responsive molecular gates.
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Corma et al. (2009) studied this question.
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