| Since carbon nanotubes (CNTs) are discovered. They have continuous promising applications due to their unique structure, peculiar electrical capability, fine flexibility, good chemical stability, thermostability and adsorption property. Chemical functionalization and modification of CNTs have become a new research hotspot.As the particular structure and the nature of the porphyrins, they are important in the field of photoelectronic conversion, biomimetic, catalytic materials, gas sensor, solar storage, microanalysis, etc. Today, the research on porphyrin derivation is more and more active. Teta - (4-hydrazidephenyl)porphyrin,5- (4-aminophenyl ) -10,15,20- triphenyl porphyrin, teta(4-aminophenyl)porphyrin, and their metalloporphyrin complexes were synthesized in this paper.Their molecular structures were characterized by 1H NMR, UV-vis and IR.This thesis studied carbon nanotubes which functionalized by porphyrins. Through covalently chemical reaction between the oxidized (MWNTs) and the amino and hydrazide porphyrins through acylamide band. Then pristine MWNTs noncovalently modified throughπ-πpileup by porphyrins. We got the composites. The chemical properties of resultant products were characterized by FT-IR.,TEM, UV-vis, and fluorescence spectroscopy. From the results we found that porphyrin- MWNTs exhibits excess 80-95% fluorescence quenching compared with porphyrins. From it we know that the porphyrin- MWNTs have a high efficiency photoinduced electron trancsfer from porphyrins to carbon nanotubes. Then research into this field would produce developments electrochemical sensors, and design of intergral components for solar energy conversion in the future. The results showed that the functional carbonnanotubes had a better solubility. The interaction and inclusion of porphyrin covalently modified MWNTs were investigated by transmission election microscopy, which accumulated data for the synthesis and applications of MWNTs-based superamolecules. The purpose of this thesis is to probe new synthetic method for composites of pophyrins and multi-walled carbon nanotubes (MWNTs); to study reaction condition, rules and relationship of structures and property; to explore the possibility of porphyrins modified on the surface of MWNTs and study the molecular recognition property, which accumulated experiences to synthesize new carbon nanotubes-based functional materials. |
