title: Single-stranded DNA functionalized single-walled carbon nanotubes for microbiosensors via layer-by-layer electrostatic self-assembly.
abstract: In this letter, the facial noncovalent adsorption of single-stranded DNA (ssDNA) provided single-walled carbon nanotubes (SWNTs) with biofunctionality while their superior properties were retained. In this case, we innovatively demonstrated the feasibility of employing the negative surface charge of ssDNA-SWNTs to realize layer-by-layer electrostatic self-assembly. On the basis of such a sandwichlike structure, an applicable glucose microbiosensor with direct electrochemistry and high performance was fabricated. The proposed protocol provided an ideal platform for various sensing applications, and might have profound influence on related nanotechnology.
authors.affiliation: State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, and §Key Laboratory of New Energy Materials and Technologies, University of Science and Technology Beijing , Beijing 100083, China.
authors.forename: Zhuo
authors.initials: Z
authors.lastname: Kang
authors.forename: Xiaoqin
authors.initials: X
authors.lastname: Yan
authors.forename: Yue
authors.initials: Y
authors.lastname: Zhang
authors.forename: Jing
authors.initials: J
authors.lastname: Pan
authors.forename: Jin
authors.initials: J
authors.lastname: Shi
authors.forename: Xiaohui
authors.initials: X
authors.lastname: Zhang
authors.forename: Yi
authors.initials: Y
authors.lastname: Liu
authors.forename: Jong Hyun
authors.initials: JH
authors.lastname: Choi
authors.forename: D Marshall
authors.initials: DM
authors.lastname: Porterfield
mesh_terms: D015374:Biosensing Techniques / Q000295:instrumentation*; D004277:DNA, Single-Stranded / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D055672:Static Electricity
chemical_list: D004277:DNA, Single-Stranded; D037742:Nanotubes, Carbon