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Hua Zhang, Kimy Yeung, Jessica S. Robbins, Ryan A. Pavlick, Meng Wu, Ran Liu, Prof. Ayusman Sen and Prof. Scott T. Phillips Self-Powered Microscale Pumps Based on Analyte-Initiated Depolymerization Reactions Angewandte Chemie International Edition 51

Version of Record online: 2 FEB 2012 | DOI: 10.1002/anie.201107787

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Pump it up: Insoluble polymer films that depolymerize to release soluble monomeric products when exposed to a specific analyte act as a microscale pump. Products formed as a result of depolymerization amplify the signal and create a concentration gradient that pumps fluids and insoluble particles away from the bulk polymer by a diffusiophoretic mechanism. These pumps can respond to a variety of analytes, from small molecules to enzymes.

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