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Drug-delivery systems with a unique capability to respond to a given stimulus can improve therapeutic efficacy. However, development of such systems is currently heavily reliant on responsive polymeric materials and pursuing this singular strategy limits the potential for clinical translation. In this report, with a model system used for drug-release studies, we demonstrate a new strategy: how a temperature-responsive non-toxic, volatile liquid can be encapsulated and stored under ambient conditions and subsequently programmed for controlled drug release without relying on a smart polymer. When the stimulus temperature is reached, controlled encapsulation of different amounts of dye in the capsules is achieved and facilitates subsequent sustained release. With different ratios of the liquid (perfluorohexane): dye in the capsules, enhanced controlled release with real-time response is provided. Hence, our findings offer great potential for drug-delivery applications and provide new generic insights into the development of stimuli drug-release systems.

Original publication

DOI

10.1098/rsif.2010.0428

Type

Journal article

Journal

Journal of the Royal Society, Interface

Publication Date

03/2011

Volume

8

Pages

451 - 456

Addresses

Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, UK.

Keywords

Organosilicon Compounds, Polymers, Drug Delivery Systems, Models, Theoretical, Coloring Agents, Nanocapsules