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    題名: Probing the mechanisms of the self ion-molecule reactions of dopamine in an ion trap mass spectrometer
    作者: 吳慧芬;Wu, Hui-fen;Chen, Chien-hung;Lu, Li-chi
    貢獻者: 淡江大學化學學系
    日期: 2003-07-15
    上傳時間: 2009-12-01
    出版者: John Wiley & Sons
    摘要: Our previous work was the first to report [M+CH]+ and [M+C2H3]+ ions in the self ion-molecule reactions (SIMR) of two aza-crown ethers in an ion trap mass spectrometer (ITMS). In this study, the CH and C2H3 addition ions were also found in the SIMR of dopamine. The SIMR of dopamine lead to the formation of the protonated molecules ([M+H]+), of adduct ions ([M+F]+, where F represents fragment ions), and of [M+CH]+, [M+C2H3]+ and [2M+H]+ ions. Based on the combination of the results of isolation experiments and semi-empirical calculations, the reactive site for the formation of the [M+H]+ and [M+CH]+ ions of dopamine is proposed to be the amino group.
    關聯: Rapid Communications in Mass Spectrometry 17(13), pp.1479-1482
    DOI: 10.1002/rcm.1068
    顯示於類別:[化學學系暨研究所] 期刊論文


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