Preparation And Catalytic Properties Of Cyclopalladated Imines Self-Assembly Film For Suzuki Reaction In Water

Self-assembled monolayer has been extensively studied over the past several decades and has attracted considerable interest for a wide variety of applications in nanotechnology, material synthesis, electrochemical, lubrication, chemical sensors, adsorption, anticorrosive and biological membrane. The catalyst self-assembly film designed is a more effective heterogeneous catalytic method, which can realize recycling use.In this paper, series of imine (include aromatic and unaromatic imine) cyclopalladated compounds self-assembly film were designed and prepared, which were characterized by using a variety of means. Specifically, the dissertation includes the following two parts:1. The cyclopalldated arylimine linking with double bond as material were directly assemblied to hydrophobic substrate to form monolayer assembly film. To obtain information on surface of the self-assembly film, the self-assembly films were characterized by atomic force microscope (AFM), X-ray photoelectron spectroscopy (XPS), static water contact Angle. The assembly films used for catalyzing the Suzuki reaction in water exhibited good catalytic properties except recycling.2. The cyclopalldated arylimine(Scheme2)and unaromatic imine assembly film were finally fabricated on the hydrophilic substrate with the method of modifying the surface structure. The assembly films obtained above were characterized by atomic force microscope, X-ray photoelectron spectroscopy, static water contact Angle, ultraviolet absorption spectrum, scanning electron microscopy (SEM). On the other hand, The catalyst self-assembled films used for catalyzing Suzuki coupling reaction showed high catalytic properties and good recycling, in which it was found that the catalytic activity is greatly influenced by molecular structure.