What is the fine-grained topic of the following text: Several experiments suggest that the strong intercalation binding of Zn2+ complexes with ds-DNA results in the unzipping of ds-DNA into ss-DNA (single-stranded DNA), which further behave as linkers to enhance the intermolecular interactions of self-assembling Zn2+ complex molecules via coordination interactions. Only return the topic.
Intercalation binding of Zn2+ complexes with ds-DNA resulting in the unzipping into ss-DNA and enhancing intermolecular interactions.