Preparation Of Rare Earth Phthalocyanine Ordered Nano-composite Photoelectric Functional Materials

The recent progresses in organic functionalization of single-walled carbon nanotubes (SWNTs) were reviewed, and the applications of porous anodic aluminum oxide (AAO) membrane in the preparation of one-dimension of nanomaterials and functional devices were also introduced.The sandwich-type rare earth bisphthalocyanine with and without amino substituent were synthesized and the purification methods were discussed. The resultant products were purified using the column chromatography method and their chemical structures were characterized by FTIR, UV-Vis, elemental analysis, and so on.The nano-level carbon nanotubes/rare earth bisphthalocyanine composite was realized by covalent functionalization of carbon nanotubes treated by mixed acid with amino substituted rare earth bisphthalocyanine. FTIR and DSC characterizations showed that the rare earth bisphthalocyanine was grafted to the carbon nanotubes by forming the amide bond and the grafting rate was about 2 times of the weight of carbon nanotubes. The electronic interaction between the phthalocyanine rings and carbon nanotubes was investigated by UV-Vis and Raman spectra, which indicated that the charge transfer was undertaken from phthalocyanine rings to carbon nanotubes. The morphology of the functionalized carbon nanotubes was observed by TEM, and found that rare earth bisphthalocyanine was periodically attached to the walls of carbon nanotubes, just like bamboo was also found.The in-situ through-out AAO template attached to the aluminum sheet was prepared by progressively reducing the anodizing voltage, which avoided the complex process of the traditional method. Under direct current, the copper phthalocyanine nanowire arrays were prepared into the AAO template by electrophoretic deposition. SEM and field emission SEM were applied to characterize the morphology of the copper phthalocyanine nanowires and nanowire arrays. The results showed that the nanowires exhibited smooth surfaces and uniform length and diameter. Energy dispersive X-ray microanalysis (EDAX) indicated that the nanowire arrays werecompletely composed of copper phthalocyanine. X-ray diffraction analysis demonstrated the polycrystalline form for copper phthalocyanine nanowires. This copper phthalocyanine nanowire arrays/AAO-based double-layered photoreceptor was constructed with the nanowire arrays/AAO as the charge generation layer. The photoconductivity study revealed good photosensitivity with the half-discharge time (t1/2) of 0.38s.In order to realize the electrophoretic deposition of perylene onto ITO, pyridine-perylenediimide (PDPP) was designed and synthesized. FTIR and elemental analysis were applied to characterize the chemical structure and purity of the resulting product. Through electrophoretic co-deposition, the nano-level rare earth bisphthalocyanine/PDPP composite film was prepared, and UV-Vis and SEM were used to primarily investigate the effects of the concentration and deposition velocity of the two materials on the morphology of the composite film. The results indicated that, owing to more easy-protonized nitrogen, the rare earth bisphthalocyanine molecule exhibited a much faster electrophoretic velocity than the PDPP did under the same applied electric field.