Syntheses Of Organic-Inorganic Hybrid Functional Materials Via Pusled Laser Ablation

Organic-inorganic hybrid materials, which is generated along with development demands of the materials science, is a kind of homogeneous hybrid material made up by inorganic component and one or more organic components. It has both the high thermal stability and chemical stability of inorganic component, and the easy-modified and easy-cutting advantage of organic component. The flexibility of organic-inorganic hybrid material makes it a very good application prospects in electrical material, luminescent material, ferroelectric material, porous adsorption and other aspects. At present, the synthetic methods of hybrid material include sol-gel method, intercalation compounding, blending method and solvent-thermal method. We once used the pulsed laser ablation to prepare metal nanoparticles and control the MOFs, and we even achieved the nanoparticles@MOFs composite material through the self-assemble of nanoparticles and MOFs under the bombardment of pulsed laser.Based on this research, this paper applies the pulsed laser ablation to prepare ferroelectric functional material and rare earth luminescent functional material. First,we apply pulsed laser ablation to compose new ferroelectric crystal[Zn3(bdc)3(H2O)2], (bdc=p-phthalic acid), of which the space group is Pbca. It is a two-dimensional layer structure formed through the connection of trinuclear cluster by bdc. DSC test results show that phase transition happens at 65?. Coat gold gluing on top and bottom surface after processing the sample tablet, and it's proved again that phase transition happens at 65? through dielectric test. Hysteresis proves the existence of ferroelectricity. It's abnormal for the ferroelectricity that because space group of ferroelectric crystal does not belong to top 10 polarization point groups. We guess maybe because of the ordered arrangement of guest molecule chloroform in channels that leads the whole crystal to have a non-zero electric polarization, and thus making the crystal have spontaneous polarization.Next, through the bombardment of pulsed laser on Eu2O3 target in zinc and organic ligands solution, we acquired new rare earth crystal compounds [Zn1.96Eu0.04(NDC)2(BPY)](NDC=2,6-naphthalenedicarboxylicacid,BPY=4,4'-bipyridyl;). The parent material of the crystal [Zri2(NDC)2(BPY)],its space group is P1 and it is a three dimensional structure with two-fold penetration by the paddle-wheel [Zn2(CO2)4] and the BPY pillar supporting [Zn2(NDC)2] layer. The [Zn1.96Eu0.04(NDC)2(BPY)] can operate like little amount of Eu ions replace Zn ions in crystal lattice of [Zn2(NDC)2(BPY)], its space group is space group is P21/c. But this ion substitution reaction cannot obtained by solvent thermal method of mixing metal ion or [Zn2 (NDC) 2 (bpy) crystal and Eu3+ ion immersion exchange conventional method, that laser ablation method different from that of a conventional method, laser generation of high temperature, high pressure and high energy, are more likely to promote an increase in the collision probability of the europium ion, zinc ion and organic ligands, which for the conventional methods is difficult to achieve the ion substitution.