基于主-客体相互作用的插层水滑石光敏特性研究

摘要

The paper describes a systematic study on the synthesis of Zn-Al layered double hydroxides (LDHs).Different guest species intercalated LDHs have been synthesized by the methods of coprecipitation and ion exchange,respectively,such as o-,m,p-nitrobenzoic acid.PXRD,FTIR,UV/Vis and theoretical calculation were used to study the photosensitivity,and the possible mechanism was proposed,which provides a theoretical basis and a prerequisite for the application of the new photosensitive materials.%本文基于水滑石类插层材料(LDHs)特有的超分子结构及其功能可调控性,采用离子交换法成功合成了邻、间、对硝基苯甲酸阴离子(o-、m-、p-NBA-)插层的锌铝水滑石,并研究了插层产物的光敏性能.插层后这3种异构体化合物都在紫外光照射下表现出不同的光响应程度,即光敏作用:m-NBA-LDH》o-NBA-LDH≈p-NBA-LDH.用PXRD、FTIR、UV/Vis和理论计算研究了光敏性能,并提出了可能的光敏机理,为其应用于新型感光材料提供了一定的理论基础.