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合成了一种耐高温的3,4-二(3-苯氧基-4-氟苯基)-2,5-二苯基苯基接枝聚硅氧烷(DPFP)固定相,使用静态涂渍法将其涂渍到毛细管柱内壁上,制成气相色谱柱。分离裂解乙烯的色谱图显示DPFP固定相在360℃时仍具有良好的分离能力。DPFP固定相的柱效为3 324块/米(保留因子(k)4.24,萘,0.25 mm i.d.)。麦克雷诺常数计算结果显示DPFP固定相属中等极性。溶剂化参数模型结果显示DPFP固定相与溶质之间的主要作用力为偶极-诱导偶极作用力、氢键碱性作用力。Grob试剂分离结果显示DPFP色谱柱具有良好的选择性与惰性。另外,芳香族同分异构体、苯取代物、多环芳烃、脂肪酸酯及脂肪醇都得到了良好的分离,表明DPFP固定相在应用方面有巨大的潜力。
A high temperature resistant 3,4-bis (3-phenoxy-4-fluorophenyl) -2,5-diphenylphenyl grafted polysiloxane (DPFP) Stain method will be coated on the capillary column wall, made of gas chromatography column. Chromatography of the cleaved ethylene showed that the DPFP stationary phase still had good separation capacity at 360 ° C. The DPFP stationary phase has an efficiency of 3 324 pieces / m (retention factor (k) 4.24, naphthalene, 0.25 mm i.d.). The calculated Mcreynolds constant shows that the DPFP stationary phase is of moderate polarity. Solvation parameter model results show that the main force between the DPFP stationary phase and the solute is the dipole-induced dipole force and the hydrogen-bonding alkaline force. Grob reagent separation results show that DPFP column has good selectivity and inertness. In addition, aromatic isomers, benzene substitutes, polycyclic aromatic hydrocarbons, fatty acid esters and fatty alcohols have been well separated, indicating that DPFP stationary phase has great potential in application.