The Designment And Synthesis Of Arynyl Thioether Molecules Containing Multifunctional Group

Self-assembled monolayers (SAMs) and Self-assembly of nanocluster have attracted much interest from the chemists. Potential applications of the nanocluster assemblies include chemical sensors or biosensors, biomedical diagnostics, information storage, and catalysis. So they have attracted extensive attention in biomedical science, physical chemistry and nanomaterials. But one intriguing question is how the interparticle spatial properties of nanoparticle assemblies can be tuned by size, shape, and binding properties of the mediators. The answer would have a profound impact on the fine-tunability of the assembled nanostructures, which requires novel designs of the mediator structures in terms of size, shape, and ligand properties.This research is to design and synthesize some new molecules of arylthioether which are different in size, shape, and function base, and have the character ofπ-conjugate, the other is to have a systematically investigation of the special actions in Self-assembly and disassembly of nanocluster and controllable sizes and shapes to find some oddity characters and functions. Beacause the ability to assemble nanoparticles by RS?ligand is moderate, we can expect that it's feasible to disassemble the Self-assembly of nanocluster after thioether added. Furthermore, because the different molucles which are adhered on the surface of template have different effects at approach quomodo and assembly numbers, it can reach the purpose of adjusting the size and shape of Self-assembly of nanocluster. This research can not only enrich the synthetic chemistry but also has important academic and application significance of minisize molecule property and high metal catalyzer.In the second and the third chapter, the design and synthesis of rigid multidentate alkythioether molecules with plane and solid structure were described. These compounds include I,V,X,Y, helical structure and triphenylamine derivative which have different size, shape, functional groups andπ-conjugated bone. Then we get the target compounds by diazotization, electronic substitute, introduction and removal of protecting group, and Sonogashira reaction. The structures of the new intermediates and target molecules were identified by 1H NMR, 13C NMR, IR, and MS. Some of the molecules is being expected to get some interesting results in NewYork University. We hope that these rigid alkythioether molecules can not only assemble but also disassemble after thioether added. These characters are very important to the assemble and disassemble of nanoparticles, so it's worthy to continue the research.