Hydroxyl And Sulfonate Sodium Phenyl Porphyrins And Its Metalloporphyrin Functionalize Multi-walled Carbon Nanotubes

Since CNTs was found by Iijima used Arc-discharge method in 1991, due to their unqiue structure, peculiar electronic properties, excellent stability and adsorption properties. Carbon nanotubes(CNTs) has been widely applied in various fields. CNTs was predicted to be one of the most potential quasi-one-dimensional nano- materials, new generation of flat panel display materials and nanometer electronic devices materials in the 21st century.With special structure and properties, porphyrins and its derivatives play an important role in the photoelectric transformation, bionics, catalysis materials, gas sensors, the solar energy storage, trace analysis and etc. porphyrins and its derivatives are attractived more and more concern. The porphyrins-functionalized CNTs has attracted great attention because of their particular structure and properties. Our interest has been focused on covalently and noncovalently porphyrins-functionalized Multi-Walled Carbon Nanotubes(MWNTs), and for the purpose of how to increase porphyrins-functionalized MWNTs composites in organic solvents and water's dispersion and solubility. In this article, the reaction conditions, rules and relationship of structures and properties have been studied in order to develope an efficient way of complexation between MWNTs and pophyrins and to explore the unique properties of MWNTs.We synthesized 5-(2-hydroxyphenyl)-10,15,20-triphenylporphyrin, tetra-(4- sulfonato sodium phenyl) porphyrin and their metalloporphyrins in this paper. The molecular structures and performances of all the above compounds were ch-aracterized by 1HNMR, FT-IR and UV-vis.The covalently porphyrins-functionalized MWNTs was prepared from the cinnamyi-chloride of MWNTs and the hydroxy phenyl and Sulfonate Sodium phenyl porphyrins from esterification and anhydride, respectively. The noncovalently porphyrins-functionalized MWNTs composites was gained viaπ-πpileup between the unpurified MWNTs and porphyrins. The structure of the composites were characterized by FT-IR; Their properties of all final products were characterized by UV-vis spectra and fluorescence spectra. Then observed Mn-TSPP covalently and noncovalently functionalized MWNTs composites's morphology by Transmission Electron Micro- scopy (TEM); Moreover reseached its dispersion and solubility in water. The result showed after modification, the porphyrins were attached to the MWNTs, then improved the MWNTs's solubility. And some of the noncovalently porphyrin- functionalized MWNTs composites exhibited above 80% fluorescence quenching, which shows an efficiently photoinduced electron transfer from porphyrins to carbon nanotubes and has potential values for the future development of solar battery.