氣相層析質譜儀電子撞擊游離化法與正化學游離化法及氣相層析儀-火焰離子化偵測器應用於含氟鏈聯吡啶螯合劑之研究

GC/MS Electron Ionization and Positive Chemical Ionization modes and GC-FID Studies of a series of 4,4’- and 5,5’-bis(fluorous-ponytail)-2,2’-bipyridine

蘇漢章(Han-Chang Su)

指導教授 ： 呂良賜

國立臺北科技大學/工程學院/有機高分子研究所/碩士(2010年)

摘要

本研究室已成功利用含氟醇類分別合成出在聯吡啶的4,4’位置以及在聯吡啶5,5’位置上有兩個含氟鏈的聯吡啶螯合劑〔4,4’-bis(RfCH2OCH2)-2,2’-bpy (1a-k) and 5,5’-bis(RfCH2OCH2)-2,2’-bpy (2a-f), Rf = n-CF3 (a), HCF2CF2 (b), n-C2F5 (c), n-C3F7 (d), HCF2(CF2)3 (e), HCF2(CF2)5 (f) , n-C7F15 (g) , HCF2(CF2)7 (h) , n-C8F17 (i) , n-C9F19 (j) , n-C10F21 (k)〕。本研究利用氣相層析質譜儀的電子撞擊游離化法與正化學游離法以及氣相層析儀-火焰離子化偵測器來分析鑑定這些螯合劑並探討之。由氣相層析質譜儀分析的結果中我們可以發現在電子撞擊游離化模式下分析時，質譜圖中螯合劑的分子離子峰具有較小的訊號強度，甚至會消失而無法辨識；而在正化學游離化模式下分析時，螯合劑的分子離子峰[M+H]+則具有較強的訊號強度，除此之外更可以觀察到[M+C2H5]+ 以及[M+C3H5]+的離子峰。另外，本研究更進一步地探討利用氣相層析儀-火焰離子化偵測器作為螯合劑定性分析的研究與定量分析的可能性。

關鍵字

氣相層析質譜儀 ； 氣相層析儀-火焰離子化偵測器 ； 電子撞擊游離化法 ； 正化學游離化法

並列摘要

With the readily available fluorous alkanols, RfCH2OH, two series of novel fluorous-ponytailed bpy ligands, 4,4’-bis(RfCH2OCH2)-2,2’-bpy (1a-k) and 5,5’-bis(RfCH2OCH2)-2,2’-bpy (2a-f), where Rf = n-CF3 (a), HCF2CF2 (b), n-C2F5 (c), n-C3F7 (d), HCF2(CF2)3 (e), HCF2(CF2)5 (f) , n-C7F15 (g) , HCF2(CF2)7 (h) , n-C8F17 (i) , n-C9F19 (j) , n-C10F21 (k) were successfully synthesized. The new ligands were not only spectroscopically characterized but also extensively studied by gas chromatography, e.g. using GC/MS electron ionization (EI) mode, positive chemical ionization (PCI) mode, GC-FID and so on. As expected, using the EI mode the molecular ion is either not detected or present with very low abundance. When using the PCI mode, the molecular ion [M+H]+ peak becomes highly abundant peak. In addition to [M+H]+ peak, the peaks with [M+C2H5]+ and [M+C3H5]+ fragments also appear as the fingerprints of these two types of compounds. The details of these mass studies will be presented. Furthermore, using the GC-FID to quantify these fluorous bipyridyl ligands will also be addressed.

並列關鍵字

GC/MS ； GC-FID ； Electron Ionization ； Positive Chemical Ionization

參考文獻

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