School of Chemistry, University of Southampton, Southampton, UKSO17 1BJ.
Phys Chem Chem Phys. 2010 Mar 28;12(12):2895-914. doi: 10.1039/b915587b. Epub 2010 Feb 1.
The structure, conformation and orientational order of the mesogen I22 have been studied by proton, carbon-13 and deuterium 1D and 2D-NMR spectroscopies at natural abundance and at various magnetic fields when in the nematic phase, the isotropic phase close to the nematic-isotropic phase transition, and as a solute in the chiral nematic solution comprised of the polypeptide PBLG dissolved in chloroform. It is concluded that 95% of conformers have a trans arrangement about the central C-C bond of the ethane fragment in all phases.
已通过质子、碳-13 和氘的 1D 和 2D-NMR 光谱法在天然丰度下以及在向列相、接近向列-各向同性相转变的各向同性相以及作为包含溶解在氯仿中的多肽 PBLG 的手性向列溶液中的溶质时,研究了介晶 I22 的结构、构象和取向有序性。结论是,在所有相中,95%的构象在中央 C-C 键处具有乙烷片段的反式排列。