Design, Synthesis And Photochemical Properties Of Organic/Inorganic Composite Of Functional Porphyrin Derivatives

Porphyrin derivatives have been an important class of photochemical materials, and display wide promising applications in organic electronics, nonlinear optics, telecommunication technologies and photovoltaic cells. In our works, four novel porphyrins with different substituents on the β position of tetraphenylporphyrin were synthesized. And carbon nanocrystals (CNCs) were prepared by electrolysis. In addition, the optical properties of the four novel porphyrins, CNCs and phorphyin@CNCs were investigated. The main research contents are elaborated as follows:(1) The developments of organic materials and porphyrin derivatives in the field of photochemistry were described in the first chapter. On this base, the design ideas for our paper were proposed.(2) Four novel porphyrins with different substituents (pyrene, pyridinium, N, N-diethyl-4-styrene aniline, et al) on the β position of tetraphenylporphyrin were synthesized, and their structures were characterized by1H NMR,13C NMR and MALDI-TOF MS. Also CNCs were prepared by electrolysis in ionic liquid, and then characterized by TEM.(3) The Uv-vis absorption, fluorescence TGA and cyclic voltammetry (CV) properties of the four novel porphyrin derivatives were studied. Additionally, the Uv-vis absorption and fluorescence properties of CNCs were discussed. The values of frontier orbitals (HOMO and LUMO) for the four porphyrins were calculated from the datas of CV and Uv-vis absorption. The result of TGA indicated that the four pophyrins have a good thermal stability.(4) We discussed the Uv-vis absorption and fluorescence of porphyrin@CNCs in the final chapter. We found that porphyrin@CNCs have an promising application in photovoltaic cells.