Integrating Ionic Gate and Rectifier Within One Solid-State Nanopore via   Modification with Dual-Responsive Copolymer Brushes

doi:10.1002/adfm.201000989

CORC > 北京大学 > 工学院

	Integrating Ionic Gate and Rectifier Within One Solid-State Nanopore via Modification with Dual-Responsive Copolymer Brushes
	Guo, Wei ; Xia, Hongwei ; Cao, Liuxuan ; Xia, Fan ; Wang, Shutao ; Zhang, Guangzhao ; Song, Yanlin ; Wang, Yugang ; Jiang, Lei ; Zhu, Daoben
刊名	先进功能材料
	2010
关键词	RECTIFYING POTASSIUM CHANNELS CONTROLLED DRUG-DELIVERY CONTROLLED-RELEASE POLYMER BRUSHES GATING MEMBRANE CURRENT RECTIFICATION BIOLOGICAL NANOPORE SYNTHETIC NANOPORES DNA PH
DOI	10.1002/adfm.201000989
英文摘要	A dual-functional nanofluidic device is demonstrated that integrates the ionic gate and the ionic rectifier within one solid-state nanopore. The functionalities are realized by fabricating temperature-and pH-responsive poly(N-isopropyl acrylamide-co-acrylic acid) brushes onto the wall of a cone-shaped nanopore. At ca. 25 degrees C, the nanopore works on a low ion conducting state. When the temperature is raised to ca. 40 degrees C, the nanopore switches to a high ion conducting state. The closing/opening of the nanopore results from the temperature-triggered conformational transition of the attached copolymer brushes. Independently, in neutral and basic solutions, the conical nanopore rectifies the ionic current. While in acid solutions, no ion rectifying properties can be found. The charge properties of the copolymer brushes, combined with the asymmetrical pore geometry, render the nanopore a pH-tunable ionic rectifier. The chemical modification strategy could be applied to incorporate other stimuli-responsive materials for designing smart multi-functional nanofluidic systems resembling the "live" creatures in nature.; Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter; SCI(E); 44; ARTICLE; 20; 3561-3567; 20
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/242071]
专题	工学院
推荐引用方式 GB/T 7714	Guo, Wei,Xia, Hongwei,Cao, Liuxuan,et al. Integrating Ionic Gate and Rectifier Within One Solid-State Nanopore via Modification with Dual-Responsive Copolymer Brushes[J]. 先进功能材料,2010.
APA	Guo, Wei.,Xia, Hongwei.,Cao, Liuxuan.,Xia, Fan.,Wang, Shutao.,...&Zhu, Daoben.(2010).Integrating Ionic Gate and Rectifier Within One Solid-State Nanopore via Modification with Dual-Responsive Copolymer Brushes.先进功能材料.
MLA	Guo, Wei,et al."Integrating Ionic Gate and Rectifier Within One Solid-State Nanopore via Modification with Dual-Responsive Copolymer Brushes".先进功能材料 (2010).