Solvent-Responsive Radical Dimers
Solvent-Responsive Radical Dimers
复制标题
溶剂响应自由基二聚体
DOI：
10.1021/acs.orglett.0c02152
复制
发表时间：
2020
期刊：
影响因子：
5.2
通讯作者：
Winter, Arthur H.
中科院分区：
文献类型：
--
作者：
Peterson, Joshua P.;Winter, Arthur H.
报道了一种对空气和热稳定的芳基二氰甲基自由基，它通过改变溶剂在两种二聚体形式-σ二聚体和π二聚体之间转换。这两种二聚体形式表现出独特的光学性质，导致溶剂化变色行为。这些自由基的溶剂响应性行为可以解释为pimer的极化率高于σ二聚体，导致pimer在极性溶剂中稳定。
An air- and thermally stable aryl dicyanomethyl radical is reported that switches between two dimeric forms—a σ dimer and a π dimer—by changing the solvent. The two dimer forms exhibit unique optical properties leading to solvatochromic behavior. The solvent-responsive behavior of these radicals can be explained by the higher polarizability of the pimer than the σ dimer that leads to pimer stabilization in polar solvents.