Polyaspartates as Thermoresponsive Enantiodifferentiating Helically Chiral Alignment Media for Anisotropic NMR Spectroscopy
作者:Mira Schwab、Dominik Herold、Christina M. Thiele
DOI:10.1002/chem.201702884
日期:2017.10.17
Lyotropic liquid crystalline phases of poly‐β‐phenethylaspartates are presented as new helically chiral enantiodifferentiatingalignmentmedia with thermoresponsive properties. In addition to displaying the highest enantiodifferentiation observed for homopolypeptides, the alignmentmedia undergo a temperature induced helix reversal without perturbing the nematic phase. This offers the opportunity to
Thermoresponsive Alignment Media in NMR Spectroscopy: Helix Reversal of a Copolyaspartate at Ambient Temperatures
作者:Mira Schwab、Volker Schmidts、Christina M. Thiele
DOI:10.1002/chem.201803540
日期:2018.9.25
application of polyphenethylaspartates as helically chiral alignmentmedia. The thermoresponsivity observed for these polymers offers the possibility to measure different orientations of analytes before and after helix reversal of the alignment medium at 373 K. Herein we present a synthesized copolymer of phenethyl‐ and benzylaspartate as a new alignment medium undergoing this helix reversal at 303–313 K.