6,7-Difluoro-1,4-dihydro-1-methyl-4-oxo-3-quinolinecarboxylic Acid, a Newly Designed Fluorescence Enhancement-Type Derivatizing Reagent for Amino Compounds
作者:Junzo Hirano、Kenji Hamase、Hiroyuki Miyata、Kiyoshi Zaitsu
DOI:10.1007/s10895-009-0596-2
日期:2010.3
A novel fluorescence enhancement-type derivatizing reagent for amino compounds, 6,7-difluoro-1,4-dihydro-1-methyl-4-oxo-3-quinolinecarboxylic acid (FMQC), was developed. FMQC reacts with aliphatic primary amino compounds to afford strong fluorescent derivatives having high photo-and thermo-stabilities. The FMQC derivatives of amino compounds showed 12–159 times higher fluorescence quantum efficiencies than those of FMQC in aqueous and polar organic media. Additionally, the absorption and fluorescence emission wavelength of the derivatives are red-shifted from those of FMQC. These differences in the fluorescence properties between FMQC and the fluorescent derivative enabled the simple and highly sensitive determination of amino compounds without removing any excess unreacted FMQC by using a simple spectrofluorometer as well as HPLC.
开发了一种新型氨基化合物荧光增强型衍生试剂6,7-二氟-1,4-二氢-1-甲基-4-氧代-3-喹啉甲酸(FMQC)。 FMQC 与脂肪族伯氨基化合物反应,产生具有高光稳定性和热稳定性的强荧光衍生物。氨基化合物的 FMQC 衍生物在水性和极性有机介质中表现出比 FMQC 高 12-159 倍的荧光量子效率。此外,衍生物的吸收和荧光发射波长相对于 FMQC 发生红移。 FMQC 和荧光衍生物之间荧光特性的这些差异使得通过使用简单的分光荧光计和 HPLC 能够简单且高度灵敏地测定氨基化合物,而无需去除任何过量的未反应的 FMQC。