Artificial, switchable K-gated ion channels based on flow-through titania-nanotube arrays.

Autor: Zhu, Bin, Li, Jingjian, Chen, Qingwei, Cao, Rui-Guo, Li, Jianming, Xu, Dongsheng
Zdroj: Physical Chemistry Chemical Physics (PCCP); 9/14/2010, Vol. 12 Issue 34, p9989-9992, 4p
Abstrakt: In the present work, we demonstrated a novel type of artificial K+gated ion channels based on titania nanotubes loaded with Au nanoparticles and G-rich DNA composite structure. Kꚺ⚢힝 conformational change of G-rich DNA from flexible chain to rigid quadruplex, which provided a blocking effect for the transport of anions such as Fe(CN)64−and other molecules through the channels in TiO2nanotubes. This fabricated permselective membrane using K a trigger may set light to the field of biosensing, drug-release, ion exchange membrane and so on. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index