摘要
Six peralkylated β- cyclodec\xtrins used as capillary gas chromatographic stationary phases were prepared and characterized by differential by differential scannning calorimetry(DSC) and pyrolysis gas chromatography (PyGC). The DSC profiles illustrated that the peralkylated β-cyclodextrins synthesized possess the supercoooled state and the glass state below their melting point The PYGC results showed that the long-chain alkylated β-cyclodextrins are more thermostable than the short-chain. one All ofthese peralkylated β-cyclodextrins are suitable for use as capillary column gas chromatographic stationary phases,which can easily be coatal on the fused silica capilary columns and have nice chromatographic retention behaviour. For example, the capillary colunns coated with these materials can excellently separate three methylphenol isomers and six dimehylphenol isomers.
本文共合成了六个全烷基化β－环糊精，并用差示扫描量热法（ＬＢＣ和裂解气相色谱法（ＰｙＧＣ）对其进行表征．ＤＳＣ的结果表明这些全烷基化β－环糊精在它们的熔点以下显示出稳定的过冷态和玻璃态．ＰｙＧＣ的结果表明长链烷基取代的β－环糊精的热稳定性好．所有这些环糊精衍生物均可用作气相色谱固定相，用其分离甲酸和二甲酚时得到了良好的结果．
基金
国家自然科学基金
高校博士学科专项科研基金
