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首页> 外文期刊>Chemistry: A European journal >Synthesis of 1,2-Dioxetanes as Thermochemiluminescent Labels for Ultrasensitive Bioassays: Rational Prediction of Olefin Photooxygenation Outcome by Using a Chemometric Approach
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Synthesis of 1,2-Dioxetanes as Thermochemiluminescent Labels for Ultrasensitive Bioassays: Rational Prediction of Olefin Photooxygenation Outcome by Using a Chemometric Approach

机译:1,2-二氧杂环丁烷类化合物的合成作为超灵敏生物测定的热化学发光标记:使用化学计量学方法合理预测烯烃的光氧合结果

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摘要

Great interest in new thermochemiluminescent (TCL) molecules, for example, in bioanalytical assays, has prompted the design and synthesis of a small library of more than 30 olefins to be subjected to photooxygenation, with the aim of obtaining new 1,2-dioxetane-based TCL labels with optimized properties. Fluorine atoms on the acridan system remarkably stabilize 1,2-dioxetanes when they are located in the 3-and/or 6-position (4h and 4i). On the other hand, 2,7-difluorinated acridan dioxetane (4j) showed a significantly enhanced fluorescence quantum yield with respect to the unsubstituted dioxetane (4a). Some of the synthesized olefins did not undergo singlet oxygen addition and a rationale was sought to ease the photooxygenation step, leading to the TCL dioxetanes. A chemometric approach has been adopted to exploit principal component analysis and linear discriminant analysis of the structural and electronic molecular descriptors obtained by DFT optimizations of olefins 3. This approach allows the steric and electronic parameters that govern dioxetane formation to be revealed.
机译:对新的热化学发光(TCL)分子的极大兴趣,例如在生物分析中,促使设计和合成了30多种要进行光氧化的烯烃的小库,目的是获得新的1,2-二氧杂环丁烷-具有优化属性的基于TCL的标签。当cri啶体系中的氟原子位于3和/或6位(4h和4i)时,它们可以显着稳定1,2-二氧杂环丁烷。另一方面,相对于未取代的二氧杂环丁烷(4a),2,7-二氟化的cri啶二氧杂环丁烷(4j)显示出显着提高的荧光量子产率。一些合成的烯烃未进行单线态氧加成,并寻求合理的方法以简化光氧化步骤,从而得到TCL二氧环乙烷。已采用化学计量学方法对通过烯烃3的DFT优化获得的结构和电子分子描述符进行主成分分析和线性判别分析,从而揭示了控制二氧杂环丁烷形成的空间和电子参数。

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