Chem. J. Chinese Universities ›› 2015, Vol. 36 ›› Issue (7): 1243.doi: 10.7503/cjcu20150267

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Ion Transport in DNA Superstructure Modified Diamond-shaped Nanopores

JIANG Yanan1, KANG Qian3, GUO Wei2,*(), JIANG Lei1,2   

  1. 1. School of Chemistry and Environment, Beihang University, Beijing 100191, China
    2. Laboratory of Bio-inspired Smart Interface Science, Technical Institute of Physics and Chemistry,Chinese Academy of Sciences, Beijing 100190, China
    3. Department of Chemistry, Capital Normal University, Beijing 100048, China
  • Received:2015-04-07 Online:2015-07-10 Published:2015-06-17
  • Contact: GUO Wei E-mail:wguo@iccas.ac.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.11290163, 91127025), the Major National Science and Technology Project of Nanotechnology of China(No.2011CB935700) and Bejing New-star Plan of Science and Technology, China(No.2015B077)

Abstract:

Inspired by the biological ion channels, DNA supersandwich structures were self-assembled in diamond-shaped mica nanopores, forming highly efficient gate-like nanofluidic switch. Through asymmetric DNA modification in the mica nanopores, rectified ion transport property was observed. The results revealed that DNA, the flexible biological molecules, can also be used to build nanofluidic devices for gating and rectification function in solid-state nanopores with parallel tetrahedron structures.

Key words: Bio-inspired nanopore, DNA self-assembly, Ion transport

CLC Number: 

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