Most people know that our DNA is made out of a double helix. What is less known, however, is that something similar can be realized on the basis of synthetic polymers!
Polymers containing a stereo-center in each repeating unit are needed for this purpose. If configured always in the same manner, a helix can be formed. The helix is reversed at altered configuration of the repeating unit. Upon mixing of the two polymers, it is possible to obtain so-called stereocomplexes. The state of the art with respect to polyesters was recently summarized in a review article, which forms part of the Macromolecular Rapid Communications special issue entitled "The Year of Polymers - 100 Years of Macromolecular Chemistry".
You can find the complete article here.
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