Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
180033 | Electrochemistry Communications | 2010 | 4 Pages |
Abstract
In this study, a novel covalent modification method of the single glass conical nanopore channel with amphoteric 6-carboxymethyl-chitosan (CMC) was designed to obtain a smart device responsive to a broad range of pH stimuli. This response is highly sensitive, reversible and reproducible. The CMC modified channel possessing carboxyl and amino groups was able to regulate ion transport selectivity and ion current rectification properties which depend on surface charges at various pH values. Each modification step was characterized by simply measuring the current–voltage (I–V) curves of the nanopore channel.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Li-Xiang Zhang, Xiao-Hong Cao, Yu-Bin Zheng, Yao-Qun Li,