A Surface-Confined Proton-Driven DNA Pump Using a Dynamic 3D DNA Scaffold
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- 作者：Dan Zhu ; Hao Pei ; Guangbao Yao ; Lihua Wang ; Shao Su ; Jie Chao ; Lianhui Wang ; Ali Aldalbahi ; Shiping Song ; Jiye Shi ; Jun Hu ; Chunhai Fan and Xiaolei Zuo
- 刊名：Advanced Materials
- 出版年：2016
- 出版时间：August 24, 2016
- 年：2016
- 卷：28
- 期：32
- 页码：6860-6865
- 全文大小：1742K
- ISSN：1521-4095
文摘
A proton-driven molecular pump is devised using a surface-confined dynamic 3D DNA scaffold. A dynamic DNA tetrahedral nanostructure is designed by incorporating a pH-sensitive i-motif sequence in one edge, which serves as the scaffold to ensure highly ordered orientation and spatial isolation of this nanomachine on the macroscopic gold surface. It is found that the switching ability of this dynamic tetrahedron is fully maintained on the surface. Importantly, this proton-driven nanomachine can reversibly pump water and ferricynide in response to pH variation in solution.