{Mo102}型纳米多孔无机富勒烯衍生物的合成、表征及三阶非线性光学性质  

Synthesis,Characterization and the Third-order Nonlinear Optical Properties of a Derivative of {Mo_(102)}-type Porous Inorganic Nano-fullerene

作　　者：周云山[1] 韩瑞雪[1] 张立娟[1] 李豫豪[1] 张丽辉[1] 

机构地区：[1]北京化工大学化工资源有效利用国家重点实验室

出　　处：《高等学校化学学报》2008年第7期1299-1303,共5页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20541001,20771012)资助

摘　　要：在室温酸性条件下,利用高负电性的表面分布有20个{Mo9O9}型纳米孔道的无机富勒烯囊状阴离子[{(MoⅥ)Mo5ⅥO21(H2O)6}12{MoⅤ2O4(SO4)}30]72-与胍基乙酸反应,得到了表面分布有20个{Mo6O6}型纳米孔道的由102个Mo及氧原子组成的[{(Mo)Mo5O21(H2O)4SO4}12{MoⅤO(H2O)}30]12-小无机富勒烯囊状阴离子.通过单晶X射线衍射、元素分析、FTIR、UV-Vis、TG-DTA、ESR等手段对其进行了表征.该化合物属于三斜晶系,P1空间群,晶胞参数a=2.5377(5)nm,b=2.5932(5)nm,c=3.9547(8)nm,α=83.58(3)°,β=86.15(3)°,γ=75.55(3)°,V=25.023(9)nm3.利用脉冲时间为5ns的532nm激光通过Z-扫描实验得到该化合物的三阶非线性折射率γ=-3.29×10-18m2/W,三阶非线性极化率χ(3)=-1.04×10-23m2·V-2,表明该化合物具有较强的自散焦三阶非线性光学效应.Abstract A small spherical inorganic fullerene nano-capsule anion of a formula [{（Mo^Ⅵ）Mo5^ⅥO21（H2O）6}12{Mo2^ⅤO4（SO4）}30]^12-bearing 20 {Mo6O6}-type rings/channels built up from 102 Mo atoms and O at-oms were synthesized by reacting a highly charged spherical inorganic fullerene nano-capsule anion with the formula ^ⅥO21（H2O）6}12{Mo2^ⅤO4（SO4）}30]^72-bearing 20 {Mo9O9}-type rings/channels with guanidineacetic acid under acidic conditions at room temperature. The crystal structure of the resulted compound were characterized by X-ray single-crystal diffraction, elemental analysis, TG-DTA analysis and FTIR,UV-Vis, and ESR spectrascopies. It crystallizes in a triclinic system space group P^1,α=2.5377（5）nm,b=2.5932（5）nm,c=3.9547（8）nm,α=83.58（3）°,β=86.15（3）°,γ=75.55（3）°,V=25.023（9）nm^3.Meanwhile, its third-order nonlinear optical properties were studied using Z-scan technique with 5 ns laser pulse at λ =532nm.The third-order nonlinear susceptibility X^（3）=-1.04×10^-23m^2·Ⅴ^-2,showing strong nonlinear self-defocusing refractive effects.

关 键 词：无机富勒烯 纳米结构 非线性光学性质 

分 类 号：O614[理学—无机化学] O743.53[理学—化学]