Quantitative treatment of the rotational dynamics of flexible-chain molecules.13C NMR relaxation study of hydrocarbon chains attached to the fluorene anchor
作者:D. Pissas、Photis Dais、E. Mikros
DOI:10.1002/mrc.1260320503
日期:1994.4
enhancements (NOEs) were measured for individual carbons in flexible‐chain molecules consisting of a hydrocarbon chain attached to fluorene moiety at position 3 through an ester bond. Quantitative treatment of the relaxation data of the ring carbons revealed an anisotropic motion for all the molecules studied. The relaxation times of the chain carbons were analysed in terms of a correlation function describing
测量了柔性链分子中单个碳的 13C 自旋晶格弛豫时间 (T1) 和核 Overhauser 增强 (NOE),该分子由通过酯键连接到 3 位芴部分的烃链组成。环碳弛豫数据的定量处理揭示了所有研究分子的各向异性运动。根据描述关于连续 CC 键的多个内部旋转的相关函数来分析链碳的弛豫时间。结果(旋转扩散常数)用于讨论作为链长度和链不饱和度函数的链迁移率的特征。检查了定量处理中涉及的假设,并将值与正烷烃和脂质双层的值进行了比较。