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聚合物通过固态纳米孔捕获和转移的形态依赖动力学

Yadong Li^1,2, Wanyi Xie^1,3, Shaoxi Fang^1,3

¹Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, P. R. China.

Small (Weinheim an der Bergstrasse, Germany)

|July 1, 2025

概括

聚合物构造显著影响通过纳米孔的DNA转移. 了解这种"拥挤效应"对于推进DNA测序和传感技术至关重要.

科学领域:

生物物理学的生物物理.
纳米技术纳米技术
分子生物学分子生物学

背景情况:

聚合物通过固态纳米孔的转移对于生物过程至关重要.
聚合物形状极大地影响了捕获和转移动态.

研究的目的:

研究聚合物构成 (超卷与线性等离子体DNA) 对纳米孔捕获和转移的影响.
分析电流阻塞,应用电压和聚合物结构之间的关系.

主要方法:

使用的等离子体pBR322 DNA在超卷和线性形式.
检查了不同孔径的大小的聚合物转位动态.
与应用于电压的相关电流阻塞特性.

主要成果:

非线性电压-电流关系表明依赖于形状的捕获.
降低超线圈等离子体比率提高了折叠转位频率,降低了阻塞电流偏差.
增加的超线圈等离子体放大了线性构造对混合等离子体转移在更高电压下的影响.
确定了一种依赖于聚合物形状的偏差,称为"拥挤效应".

结论:

聚合物构造决定了纳米孔中的捕获和转移行为.
"拥挤效应"影响了转移动态.
结果为增强基于纳米孔的测序和传感技术提供了见解.

关键词:

构造性转变构造性转变拥挤效应拥挤效应聚合物转位转位的方法固态纳米孔是一种固态纳米孔.

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