Porphyrin Bonded Organic-inorganic Materials And Their Optical Properties

In this paper, the preparation procedures and optical properties of gel-based materials containing porphyrin and its derivatives were studied .The behavior of the porphyrin and the mechanism of the effect of matrixes on the porphyrin were disclosed and discussed. The compounds containing porphyrin and its derivative may be used in optical field drawing from all these outcomes.A survey of general properties of porphyrin, the application of nonlinear materials on optical limiter, and the function of gel and ormosil acting as the host material of organic molecules for fabricating Guest-Host material were elucidated.The porphyrin and its derivative were doped into inorganic and organic-inorganic materials homogenously at quite concentration from sol-gel processes, by selecting suitable solvents and choosing favorable precusors. The porphyrin molecules locate in nanometer porous holes or chemically connect to the gel matrixes. The optical properties of the porphyrin incaged in various solid matrixes. The optical were firstly studied systematically in this study. The details are summarized briefly as follows:1. The sol-gel inorganic composite was prepared by incorporating Cu(ll)meso-Tetra(4-sulfonatophenyl) porphine (Cu(II)–TPPS) into solid TiO₂/SiO₂using a sol-gel process with ethyl silicate and buthyl titanate as precursors. The states of metalloporphyrin molecules were investiaged by ultraviolet-visible spectra. The dimmers are formed in the composites as the Cu(II)–TPPS content increases further, and the dimerization becomes seriously during the xerogel stage. The nonlinear optical properties of samples were investigated by Z-scan technique using Ti:Sapphire femto-second laser pluses as a light source.2. Copper Metalloporphyrin was bonded to 3-aminopropltriethoxysilane (NH₂(CH₂)₃Si(OC₂H₅)₃, KH550) by the chemical reaction between the carboxyl group of Cu(II) meso-Tertra(4-carboxyphenyl)porphine (Cu(II)–TCPP) and amino-group of KH550. The Copper Metalloporphyrin was connected to gel network as the hydrolysis and condensation of the product.The reacted product of different concentrations was hybridized with 3-glycidoxypropltrimethoxysilane (CH₂OCHCH₂O(CH₂)₃Si(OCH₃)₃, KH560) using sol-gel processing to form sol-gel organinc-inorganic hybrid materials, which had good physical-chemical and optical properties. The doping concentration of Copper Metalloporphyrin in the monomer was greatly enhanced by the linkage of Copper Metalloporphyrin to the matrix. The cross-linkage of Cu(II)–TCPP and KH550 was confirmed with FT-IR spectra. The states of Metalloporphyrin molecules were investiagated by UV/ VIS spectra. The Nonlinear optical properties of samples were studied by Z-scan technique using Ti:Sapphire femto-second laser pluses. The nonlinear refactive index of Copper Metalloporphyrin-linking sample compared with Copper Metalloporphyrin in pores of SiO₂-TiO₂ gel.