Chem. J. Chinese Universities ›› 2009, Vol. 30 ›› Issue (11): 2146.

• Articles • Previous Articles     Next Articles

Syntheses of Fluorescence Probe 5-[2-(1H-imidazol-1-yl)-2-oxoethyl]benzo[b]acridin-12(5H)-one and Its Application for the Determination of Aliphatic Amines with LC-APCI-MS

FU Yan-Yan2 , SUN Zhi-Wei1,3, ZHAO Huai-Xin2, BAI Xin-Wei2 , SUO You-Rui1 , LI Yu-Lin1, YOU Jin-Mao1,2*   

  1. 1. Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining 810001, China;
    2. Key Laboratory of Life-Organic Analysis, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China;
    3. Graduate School of the Chinese Academy of Sciences, Beijing 100049, China
  • Received:2009-06-24 Online:2009-11-10 Published:2009-11-10
  • Contact: YOU Jin-Mao. E-mail: jmyou6304@163.com
  • Supported by:

    国家自然科学基金(批准号: 20075016)和中国科学院“百人计划”项目(批准号: 328)资助.

Abstract:

2-{12-Oxobenzo[b]acridin-5(12H)-yl}-acetic acid(BAAA) reacted with coupling agent N,N′-carbonyldiimidazole(CDI) to form an activated amide intermediate 5-[2-(1H-imidazol-1-yl)-2-oxoethyl]benzo[b]acridin-12(5H)-one(IEBA), which was a novel fluorescence probe. The amide intermediate(IEBA) reacted preferably with amines in DMF solvent in the absence of catalysts to give the high yields of derivatives, which not only have high fluorescence sensitivity but also have strong ionizable ability. The optimum excitation and emission wavelengths were at λex/λem=272 nm/505 nm. The percent ionization δ values in aqueous acetonitrile and aqueous methanol were in the range of 0—57.32% and 0—62.14%, respectively. The fluorescence detection limits of twelve amine derivatives(at a signal-to-noise ratio of 3) were in the range of 0.15—0.50 ng/mL. The online APCI-MS detection limits were at levels of 1.43—8.51 ng/mL(S/N=3).

Key words: High performance liquid chromatography/ion-trap mass spectrometry; Percent ionization; 2-{12-Oxobenzo[b]acridin-5(12H)-yl}-acetic acid; 5-[2-(1H-imidazol-1-yl)-2-oxoethyl]benzo[b]acridin-12(5H)-one

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