期刊
ADVANCED MATERIALS
卷 22, 期 31, 页码 3446-3462出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201000165
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资金
- US ARMY [W911NF-05-1-0339]
- National Science Foundation (NSF) [DMR-0706209]
A continuously growing area of controlled and tunable transport and separation of biomolecules and drugs has recently attracted attention to the structures which can be referred to as stimuli-responsive porous hydrogel thin films. Because of spatial constraints, swelling/shrinking of the hydrogel films results in closing/opening (or vice versa) of the film's pores. Such responsive systems can be used in the configuration of plane films or capsules. The combination of a low thickness (translating into a low hydrodynamic flow resistance and rapid response) with well-defined size and shape of pores (translating into better control of transport and separation), which can be closed, opened, or tuned by an external signal (allowing a large amplitude of changes in diffusivity of solutes in the thin film and a precise control of the pore size), makes these materials very. attractive for a range of applications, such as molecular filtration, separation, drug delivery, sensors, and actuators.
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