The construction of chemical species with topological properties is an area of increasing interest. Numerous such structures have been synthesized in recent years, particularly from DNA, which is a natural synthon for these molecules. Recently, higher-order topological structures have been introduced. These hyper-structures consist of combinations of simple structures, such as a Brunnian Link of Brunnian Links or a Hopf Ring of Hopf Rings, or combinations thereof. In this article, we discuss the possibilities of constructing these hyper-structures with real molecules, particularly emphasizing the tools that result from the double helical structure of DNA.
Chemical topology Higher-order topology Brunnian links Hopf links DNA
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