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首页> 外文期刊>Bulletin of the Chemical Society of Japan >Detection of Amine Vapors using Luminescent Xerogels from Supramolecular Metal-Containing
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Detection of Amine Vapors using Luminescent Xerogels from Supramolecular Metal-Containing

机译：使用含超分子金属的发光Xerogels检测胺蒸汽

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摘要

Supramolecular fluorescent gelators containing a tris(beta-diketonato) complex are synthesized by using gelation-driving chelates, and their gelation abilities are studied with 15 solvents. Thin-layer films are prepared on quartz plates from the solutions and they are studied as chemosensors for amines. Fluorescence-quenching of the thin-layer films upon exposure to saturated primary and secondary amine vapors is monitored to evaluate the abilities of the chemosensors to detect amines. The morphologies of the thin-layer films are observed by transmission electron microscopy (TEM) and discussed in relation to their fluorescence-quenching. The fluorescence-quenching efficiencies upon exposure to saturated primary and secondary amines depend on the basicity and bulkiness of the amines rather than the vapor pressure. The fluorescence-quenching is caused by decomposition of a complex through nucleophilic addition of primary or secondary amines to its carbonyl group. The detection of tertiary amines is performed by monitoring the fluorescence emission from the thin-layer films, which are composed of a ligand and EuCl3. The emergence of fluorescence originates from the formation of fluorescent Eu3+-containing gelator, in which dehydrochloric acid by tertiary amines is a trigger for the complexation.
机译：通过使用凝胶化驱动螯合物合成含有Tris（β-二酮酸盐）络合物的超分子荧光胶凝器，并使用15个溶剂研究了它们的凝胶化能力。在溶液中对石英板制备薄层薄膜，并将其作为胺的化学传感器进行研究。监测薄层膜在暴露于饱和初级和仲胺蒸气时荧光淬火，以评估化学传感器检测胺的能力。通过透射电子显微镜（TEM）观察薄层膜的形态，并与其荧光淬火相关讨论。暴露于饱和初级和仲胺后的荧光猝灭效率取决于胺的碱度和散热性而不是蒸气压。荧光猝灭是由通过对其羰基的伯胺或仲胺的亲核添加到亚核的核性添加的复合物的分解引起的。通过监测由配体和EuCl3组成的薄层膜的荧光发射来进行叔胺的检测。荧光的出现源自荧光EU3 + - 凝胶胶的形成，其中叔胺的脱氯酸是络合的触发。

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