Abstract Fluorescence resonance energy transfer between cerium ion(III) and levofloxacin is studied in a micellar solution of cetyltrimethyl ammonium bromide. A non-fluorescent 1:2 complex was formed between excited cerium ion(III) and ground state levofloxacin. The fluorescence of cerium ion(III) is quenched by levofloxacin with the quenching in accordance with the Stern–Volmer relation. The analytical relationship was established between the ratio of the fluorescence of levofloxacin present and absent cerium ion (III) and the concentration of levofloxacin, which helped to estimate the content of levofloxacin directly.

中文翻译：

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胶束溶液中铈离子（III）与左氧氟沙星之间的荧光共振能量转移及其在左氧氟沙星测定中的应用

摘要 在十六烷基三甲基溴化铵的胶束溶液中研究了铈离子(III)和左氧氟沙星之间的荧光共振能量转移。在激发态的铈离子 (III) 和基态左氧氟沙星之间形成非荧光 1:2 复合物。铈离子 (III) 的荧光被左氧氟沙星猝灭，猝灭符合 Stern-Volmer 关系。建立了左氧氟沙星存在和不存在的铈离子(III)的荧光比值与左氧氟沙星的浓度之间的分析关系，有助于直接估计左氧氟沙星的含量。