Twisting-Based Spectroscopic Measure of Solvent Polarity: The <i>P</i><sub><i>T</i></sub> Scale
作者:Wei-Jen Lo、Yi-Hui Chen、Kuangsen Sung
DOI:10.1021/jo400586w
日期:2013.6.21
The PT scale, which is correlated well with the ET(30), Y, and Z scales, is the first twisting-based spectroscopic measure of solvent polarity. It is based on two combined mechanisms: (1) the solvent-dependent intramolecular charge-transfer absorption that displays a regular hypsochromic band shift in polar solvents and (2) overcoming the intramolecular hydrogen-bond of o-1 by its differentiated solvation
的P Ť的规模,这与良好相关ë Ť(30) ,ÿ,和Ž秤,是溶剂极性的第一基于扭转-光谱测量。它基于两种组合机制:(1)溶剂依赖性分子内电荷转移吸收,在极性溶剂中显示规则的七色带移位;(2)通过在极性溶剂中的差异化溶剂克服o - 1的分子内氢键溶剂,导致C–C键扭曲,导致其最低能量电子吸收带发生规则的变色位移。