聚噻吩衍生物/纳米半导体复合材料由于协同了有机、无机材料的优势,具有显著的三阶非线性光学(NLO)性质.采用原位复合法制备磁性聚(3-已基噻吩)-Fe3 O4/CdS (P3 HT-Fe3 O4/CdS)纳米复合物.采用傅里叶红外光谱(FT-IR)、X射线衍射(XRD)、透射电镜(TEM)、扫描电镜(SEM-EDAX)和激光散射法粒度测试仪(HPPS)等方法对产物进行了表征.结果表明,P3 HT-Fe3 O4/CdS具有良好的顺磁性,其中的 Fe3 O4和 CdS的粒径约为2~4 nm.分别用紫外可见(UV-Vis)、荧光光谱(PL)和 Z-扫描方法检测复合材料的光学性质.P3 HT-Fe3 O4/CdS的n2约为1．36×10－9 esu,χ(3)约为9．76×10－12 m2/W,具有良好的三阶 NLO 性质.该磁性纳米复合材料有助于在磁场、电场中构建有序微纳结构,在光电磁复合材料领域具有潜在的应用价值.
Polymer nanocomposites (PNCs)having excellent third order nonlinear properties can be prepared u-sing Poly(3-hexylthiophene)(P3 HT)and semiconductors as materials,due to the combination of the properties of both organic and inorganic materials.In this work,the Poly(3-hexylthiophene)-Fe3 O4/CdS (P3 HT-Fe3 O4/CdS)PNCs have been prepared by in-situ one-pot method.The products were characterized by FT-IR spectros-copy (FT-IR),XRD,TEM,SEM and HPPS.Results show that,P3 HT-Fe3 O4/CdS as prepared exhibits excel-lent magnetic property and the Fe3 O4 and CdS particles are about 2-4 nm.The optical properties were studied by UV-Vis,fluorescence spectroscopy (PL)and Z-scan measurements,respectively.P3 HT-Fe3 O4/CdS exhibit ex-cellent third-order NLO properties due to the n2 andχ(3)are 1.36×10-9 esu and 9.76×10-12 m2/W,respectively. These magnetic PNCs show a potential application in the optical,electric and magnetic nanocomposites because they can help build orderly micro-nano structural materials in the magnetic field or electric field.
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