独立的桥接胺功能化周期介孔有机硅薄膜( Free-standing and bridged amine-functionalized periodic mesoporous organosilica films )

SS Park JH Shin D Zhao CS Ha Experimental/ chemical shift magic angle spinning mesoporous materials organic compounds porosity thin films/ bridged amine-functionalized periodic mesoporous organosilica films air-water interface 1,2-bis(triethoxysilyl)ethane bis[(3-trimethoxysilyl)propyl]amine cationic alkyltrimethylammonium surfactant 2D hexagonal closed-packed arrangement pore diameter solvent-extraction reaction composition 13C cross polarization MAS NMR spectra 29Si cross polarization MAS NMR spectra organic-inorganic moieties size 50 nm to 380 nm temperature 95 degC time 8 h/ A6855 Thin film growth, structure, and epitaxy A6140G Structure of powders and porous materials A7660C Chemical and Knight shifts (condensed matter NMR)/ size 5.0E-08 to 3.8E-07 m temperature 3.6815E+02 K time 2.88E+04 s

本工作以1,2-双（三乙氧基甲硅烷基）乙烷(BTEE)和双[(3-三甲氧基甲硅烷基）丙基]胺(BTMSPA)为硅源,阳离子烷基三甲基铵表面活性剂为结构导向剂,首次成功地合成了气-水界面上的自立桥联胺功能化PMO膜。薄膜厚度在50~380 nm之间,具有高度有序的周期性介观结构,具有平行于表面的二维六方密排通道。当反应组成为1.0BTEE:0.05BTMSPA:0.57C16TABR:2.28NaOH:336H2O,反应温度95°C,反应时间8 h时,经溶剂萃取制得的薄膜孔径和比表面积分别为28.9和630 m2 g1。~(29)Si和~(13)C交叉极化(CP)MAS NMR谱表明,Si-CH2-CH2-Si和Si-(CH2)3NH(CH2)3-Si是薄膜的基本结构单元。

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