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Circular Polycatenanes: Supramolecular Structures with Topologically Tunable Properties
Physical Review Letters ( IF 8.6 ) Pub Date : 2022-11-23 , DOI: 10.1103/physrevlett.129.227801 L Tubiana 1 , F Ferrari 2 , E Orlandini 3
Physical Review Letters ( IF 8.6 ) Pub Date : 2022-11-23 , DOI: 10.1103/physrevlett.129.227801 L Tubiana 1 , F Ferrari 2 , E Orlandini 3
Affiliation
Polycatenanes, macrochains of topologically interlocked rings with unique physical properties have recently gained considerable interest in supramolecular chemistry, biology, and soft matter. Most of the work has been, so far, focused on linear chains and on their variety of conformational properties compared to standard polymers. Here we go beyond the linear case and show that, by circularizing such macrochains, one can exploit the topology of the local interlockings to store twist in the system, significantly altering its metric and local properties. Moreover, by properly defining the twist (Tw) and writhe (Wr) of these macrorings we show the validity of a relation equivalent to the Călugăreanu-White-Fuller theorem , originally proved for ribbonlike structures such as double stranded DNA. Our results suggest that circular polycatenanes with storable and tunable twist can form a new category of highly designable multiscale structures with potential applications in supramolecular chemistry and material science.
中文翻译:
环状聚链烷:具有拓扑可调特性的超分子结构
聚链烷,具有独特物理性质的拓扑互锁环的大链最近在超分子化学、生物学和软物质中引起了相当大的兴趣。到目前为止,大部分工作都集中在线性链及其与标准聚合物相比的各种构象特性上。在这里,我们超越了线性情况,表明通过循环此类宏链,可以利用局部互锁的拓扑结构来存储系统中的扭曲,从而显着改变其度量和局部属性。此外,通过正确定义这些大环的扭曲 (Tw) 和扭动 (Wr),我们证明了等同于 Călugăreanu-White-Fuller 定理的关系的有效性,最初证明了带状结构,如双链 DNA。我们的研究结果表明,具有可存储和可调扭曲的环状聚链烷可以形成一类新的高度可设计的多尺度结构,在超分子化学和材料科学中具有潜在的应用。
更新日期:2022-11-23
中文翻译:
环状聚链烷:具有拓扑可调特性的超分子结构
聚链烷,具有独特物理性质的拓扑互锁环的大链最近在超分子化学、生物学和软物质中引起了相当大的兴趣。到目前为止,大部分工作都集中在线性链及其与标准聚合物相比的各种构象特性上。在这里,我们超越了线性情况,表明通过循环此类宏链,可以利用局部互锁的拓扑结构来存储系统中的扭曲,从而显着改变其度量和局部属性。此外,通过正确定义这些大环的扭曲 (Tw) 和扭动 (Wr),我们证明了等同于 Călugăreanu-White-Fuller 定理的关系的有效性,最初证明了带状结构,如双链 DNA。我们的研究结果表明,具有可存储和可调扭曲的环状聚链烷可以形成一类新的高度可设计的多尺度结构,在超分子化学和材料科学中具有潜在的应用。