研究生: |
陳建宏 |
---|---|
論文名稱: |
以共振二光子游離及質量解析臨界游離光譜術對鄰、間以及對位異丙基甲苯分子特性之研究 |
指導教授: |
儲三陽
曾文碧 |
口試委員: | |
學位類別: |
碩士 Master |
系所名稱: |
理學院 - 化學系 Department of Chemistry |
論文出版年: | 2007 |
畢業學年度: | 95 |
語文別: | 中文 |
論文頁數: | 113 |
中文關鍵詞: | 光譜 、異構物 、質量解析臨界游離光譜術 、多光子游離光譜術 、游離能 、離子態光譜 |
外文關鍵詞: | cymene, isomer, MATI, REMPI, spectra, cation spectra, ionization potential |
相關次數: | 點閱:2 下載:0 |
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我們應用了高解析度共振雙光子游離與質量解析臨界游離光譜術來探討鄰位、間位以及對位異丙基甲苯的分子特性,測量到第一電子激發態的躍遷能量和極精確的游離能,並紀錄了這些分子的第一電子激發態以及離子基態的振動光譜。鄰位異丙基甲苯的第一電子躍遷能為37208 □ 2 cm-1,而它的游離能則是68364 □ 5 cm-1。間位異丙基甲苯反式和順式有兩種構形異構物,我們測量到反式構形和順式構形的第一電子躍遷能量分別為37120 □ 2 cm-1及37158 □ 2 cm-1,它們的游離能分別為68508□ 5 cm-1和68349 □ 5 cm-1。對位異丙基甲苯分子第一電子激發態的躍遷能量為36941 □ 2 cm-1而游離能為67555 □ 5 cm-1。光譜中顯示了很多來自於甲基轉動所造成的低頻吸收,取代基的特性與在苯環上的相關位置皆會對分子的躍遷能、游離能以及振動模式造成影響,我們亦使用理論計算方法幫助我們了解分子的運動模式。
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