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Small. 2012 Apr 10;8(7):1001-5. doi: 10.1002/smll.201102117. Epub 2012 Feb 7.

Entrapment of protein in nanotubes formed by a nanochannel and ion-channel hybrid structure of anodic alumina.

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1
State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.

Abstract

The nanochannel (in a porous layer) and ion-channel (in a barrier layer) hybrid structure of anodic alumina is used as a protein-trapping device. The transmembrane potential drives the electromigration of the charged proteins (FITC-labeled) into the nanochannels, but electromigration across the barrier layer is impossible due to the size-exclusion effect. As a result, the proteins can be continuously trapped in the nanochannels.

PMID:
22311804
DOI:
10.1002/smll.201102117
[Indexed for MEDLINE]
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