中文摘要：

以四（4-溴苯基）硅烷为基元，利用超声辅助的Yamamoto 偶联反应，合成了硅中心的多孔芳香材料（ Si-PAF）。通过调节超声参数，优化了反应条件。采用红外光谱、元素分析、扫描电子显微镜和透射电子显微镜等手段表征了Si-PAF的结构及形貌，利用氮气吸附实验考察了其孔道结构。

英文摘要：

Silicon centered porous aromatic frameworks （ Si-PAF ） was synthesized by ultrasound-assisted Yamamoto coupling reaction. The ultrasound amplitude and reaction time were adjusted to optimize the reac-tion parameters. The obtained Si-PAF exhibits high chemical stability. It is insoluble in common organic sol-vents such as CHCl3 , tetrahydrofuran（ THF） , ethanol, acetone and dimethylformamide（ DMF） . The polymer was characterized by Fourier transform infrared spectroscopy （ FTIR ） , scanning electron microscopy （ SEM ） , high-resolution transmission electron microscopy（TEM）, powder X-ray diffraction（PXRD）, and N2 gas ab-sorption. From the disappearance of the C-Br bands（ at 529 cm-1 ） in the FTIR spectra, the formation of the product can be confirmed. SEM image shows that Si-PAF affords a spherical morphology. Simultaneously, TEM reveals that it possesses a worm-like texture. PXRD result indicates the amorphous texture which might be due to distortion and interpenetration of the phenyl rings. The N2 sorption isotherms were measured at 77 K to characterize the porosity of the Si-PAF networks. All networks give rise to typeⅠ nitrogen gas adsorption isotherms with a distinct hysteresis for the whole range of relative pressure. Si-PAF exhibits high surface areas （ up to 601 m2/g） and good adsorption ability of N2 .