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- W1982293485 abstract "An S-shaped chiral motif of a p-xylylene-bridged bis(cyclic dipeptide) (1), having four hydrogen-bonding amide functionalities, formed a homochiral supramolecular polymer in solution. X-ray crystallography of a slightly modified version of 1 for an enhanced crystallinity showed one-dimensional columnar assemblies via four double hydrogen-bonding interactions. Model studies with half-protected analogues of 1 indicated a nearly perfect enantioselectivity in hydrogen-bonding dimerization. When 1 was not racemic but enriched in either of the enantiomers, a supramolecular polymer with a bimodal molecular weight distribution resulted, due to the formation of two homochiral polymers with different molecular weights. By taking advantage of this, separation of optically pure 1 from an enantiomerically unbalanced mixture was possible by means of size-exclusion chromatography." @default.
- W1982293485 created "2016-06-24" @default.
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- W1982293485 date "2002-10-31" @default.
- W1982293485 modified "2023-10-06" @default.
- W1982293485 title "Homochiral Supramolecular Polymerization of an “<i>S</i>”-Shaped Chiral Monomer: Translation of Optical Purity into Molecular Weight Distribution" @default.
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- W1982293485 doi "https://doi.org/10.1021/ja028403h" @default.
- W1982293485 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/12440899" @default.
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