过渡金属络合物猝灭单重态氧能力的研究

A STUDY ON THE ABILITY OF SINGLET OXYGEN QUENCHING BY TRANSITION METAL COMPLEXES

研究了多种不同过渡金属络合物对单重态氧的猝灭问题。结果表明过渡金属络合物猝灭单重态氧的能力主要和络合物分子的几何构型有关。能形成平面四方形结构的络合物由于中心金属原子易于和~1O_2分子相接近因而具有强的猝灭~1O_2的能力,反之形成四面体形结构的络合物则猝灭能力减弱。

In this work the singlet oxygen quenching by a series of transition metal complexes was studied.The results showed that the ability of singlet oxygen quenching mainly related to the configuration geometry of the complex molecules.The complexes which have coordinating atoms arranged in a square-planar geometry have high ability for quenching singlet oxygen,because the singlet oxygen molecules easily approach to the center metal atoms from above or below the tetragon and react with them.Contrary,the complexes which have coordinating atoms arranged in a tetrahedron geometry have weak ability for quenching singlet oxygen.