The mass recognizing property of DLC film for formic acid vapors

The carbon films are prepared by r. f. plasma method with n-butylamine as carbon source. The analysis of Raman spectrosewpy shows that this kind of carbon film has diamond-like structure, and IR spectroscopy measurement indicats that there are SP² bonding, SP³ bonding and amino-group in the film. It is the existence of amino-group and hydrogen atom that cause the amorphous structure and the deformation of bonding to increase, thus leading the Raman spectrum to form a broad absorption band. The quartz crystal microbalance (QCM) deposited with this kind of carbon film as recognizing coating is very sensitive to formic acid vapors. This QCM sensor has good reproducibility, high stability, rapid response and long lifetime.     

氮支套索冠醚V．N－氨乙基单氮杂冠醚合成中氨基的保护研究

研究了一种新的氮支套素冠醚侧链上氨基的保护和脱保护基方法，结果表明，由过量乙二胺与对甲苯磺酰氯反应得到的单保护乙二胺（Ｎ－对甲苯磺酰基乙二胺４ａ），经Ｎ－烷基化环化反应，然后在氢化铝锂存在下脱除保护基，即可制得最佳产率的Ｎ－（２－氨基已基）单氮杂－１２－冠－４（１）．     

Silicon-phthalocyanine bonding with SiO2 matrix and its strong optical limiting effects

Silicon-phthalocyanine (SiPc) is chemically bonded to 3-aminopropltriethoxysilane (NH2(CH2)3Si(OC2H5)3, KH550) by the nucleophilic substituted reaction between the active chlorine of silicon dichlorine phthalocyanine (SiPcCl2) and amino-group of KH550. The reacted product is hybridized with 3-glycidoxypropltrimethoxysilane (CH2OCHCH2O(CH2)3Si(OCH3)3, KH560) with sol-gel processing to form sol-gel inorganic material with good physical-chemical and optical properties. Due to tethering SiPc to the network, the aggregation of SiPc is effectively prevented in sol-gel derived matrix, and the doping concentration of SiPc in the form of monomer in the matrix is greatly enhanced. The cross-linkage of SiPcCl2 and KH550 is estimated and confirmed with FT-IR spectra. The optical limiting effects (OLE) of the gel with different content of SiPc are investigated with a frequency double Q-switched Nd3+:YAG laser of 8 nsec. pulse.     

CO2吸附剂的研究

利用介孔材料MCM-41作为吸附剂实现CO2的吸附,以达到控制CO2排放的目的.将MCM-41作为载体,实现材料表面氨基修饰,从而提高MCM-41材料的吸附性能.为使原料粉末适用于工业应用,利用高温烧结法及低温压片法对粉末进行成型,形成特定的固体颗粒,由实验结果可以看出高温烧结法成型的颗粒坚硬且耐溶剂性能强.采用茚三酮比色法,实现氨基嫁接率的测定.经测定得到吸光度与氨基浓度的回归方程.     

Silicon-phthalocyanine bonding with SiO2 matrix and its strong optical limiting effects

Silicon-phthalocyanine (SiPc) is chemically bonded to 3-aminopropitriethoxysilane (NH₂(CH₂)₃Si(OC₂H₅)₃, KH550) by the nucleophilic substituted reaction between the active chlorine of silicon dichlorine phthalocyanine (SiPcCl₂) and amino-group of KH550. The reacted product is hybridized with 3-glycidoxypropitrimethoxysilane (CH₂OCHCH₂O(CH₂)₃Si(OCH₃)₃, KH560) with sol-gel processing to form sol-gel inorganic material with good physical-chemical and optical properties. Due to tethering SiPc to the network, the aggregation of SiPc is effectively prevented in sol-gel derived matrix, and the doping concentration of SiPc in the form of monomer in the matrix is greatly enhanced. The cross-linkage of SiPcCl₂ and KH550 is estimated and confirmed with FT-IR spectra. The optical limiting effects (OLE) of the gel with different content of SiPc are investigated with a frequency double Q-switched Nd₃₊:YAG laser of 8 nsec. pulse.