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Inventors: Kaner R.B., Knobler C.M., Guo H
Patent Title: Chiral recognition polymer and its use to separate enantiomers
Publication date: 2001
Publication number: US6,265,615

Abstract: A new polymeric material, a process for forming the material and method of using the material to separate enantiomers of chiral compounds, particularly amino acids and pharmaceuticals are disclosed. A polymeric material can be formed from polyaniline doped with a chiral acid and then extracted with a suitable base. This leaves behind a polymeric material which preferentially traps, and then selectively releases, one enantiomer of a chiral mixture brought in contact with the surface of the polymeric material. In particular, when polyaniline is doped with either R- or S-camphorsulfonic acid (CSA) it takes on a chiral structure. Removing the chiral acid dopant leads to a new chiral polyaniline. The dedoped chiral polyanilines have the ability to discriminate among enantiomers of many compounds which exist in chiral mixtures.
URL: http://v3.espacenet.com/textdoc?DB=EPODOC&IDX=US6265615&F=0

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