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From Ribbons to Networks: Hierarchical Organization of DNA-Grafted Supramolecular Polymers

机译:从色带到网络:DNA嫁接的超分子聚合物的层次组织

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摘要

DNA-grafted supramolecular polymers (SPs) allow the programmed organization of DNA in a highly regular, one-dimensional array. Oligonucleotides are arranged along the edges of pyrene-based helical polymers. Addition of complementary oligonucleotides triggers the assembly of individual nanoribbons resulting in the development of extended supramolecular networks. Network formation is enabled by cooperative coaxial stacking interactions of terminal GC base pairs. The process is accompanied by structural changes in the pyrene polymer core that can be followed spectroscopically. Network formation is reversible, and disassembly into individual ribbons is realized either via thermal denaturation or by addition of a DNA separator strand.
机译:DNA接枝的超分子聚合物(SP)允许以高度规则的一维阵列对DNA进行程序化组织。寡核苷酸沿of基螺旋聚合物的边缘排列。互补寡核苷酸的添加触发单个纳米带的组装,从而导致扩展的超分子网络的发展。通过终端GC碱基对的协同同轴堆叠相互作用实现网络形成。该过程伴随着polymer聚合物核的结构变化,该变化可以通过光谱观察。网络的形成是可逆的,并且可以通过热变性或添加DNA分离链来实现分解成单个条带的目的。

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