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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Design, synthesis and photophysical studies of an emissive, europium based, sensor for zinc
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Design, synthesis and photophysical studies of an emissive, europium based, sensor for zinc

机译：发射式，基锌传感器的设计，合成和光物理研究

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The synthesis of the probe complex (EuL)-L-. and photophysical studies in aqueous media are described. (EuL)-L-. is designed to be luminescently responsive to Zn-II in the presence of a competitive ionic mixture at pH 7.4. The structure of the complex is based upon a carboxylate functionalised azamacrocycle and possesses a chromophoric bis-picolyl unit for binding ZnII. The effect on both ligand fluorescence and Eu-III phosphorescence was investigated in the presence and absence of ZnII. The study revealed that binding ZnII increased the intensity of ligand fluorescence and modulated the inner sphere hydration number of Eu-III (q increases from 0 to 2). This modulation in coordination environment induced pronounced changes in the form of the steady state spectra allowing the presence of ZnII to be signalled by both changes in emission intensity and lifetime.
机译：探针复合物（EuL）-L-的合成。描述了在水介质中的光物理研究。 （EuL）-L-。在竞争性离子混合物（pH 7.4）存在的情况下，“ Zn-II”设计为对Zn-II具有发光响应。配合物的结构基于羧酸盐官能化的氮杂大环，并具有用于结合ZnII的发色性双吡啶甲基单元。在存在和不存在ZnII的情况下，研究了对配体荧光和Eu-III磷光的影响。研究表明，结合的ZnII增加了配体荧光的强度并调节了Eu-III的内球水合数（q从0增加到2）。在配位环境中的这种调制引起稳态光谱形式的明显变化，从而允许通过发射强度和寿命的变化来发出ZnII的信号。

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