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首页> 外文期刊>Langmuir: The ACS Journal of Surfaces and Colloids >New Organogels Based on an Anthracene Derivative with One Urea Group and Its Photodimer: Fluorescence Enhancement after Gelation
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New Organogels Based on an Anthracene Derivative with One Urea Group and Its Photodimer: Fluorescence Enhancement after Gelation

机译：基于具有一个尿素基团的蒽衍生物及其光二聚体的新有机凝胶：凝胶化后的荧光增强

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摘要

By coupling the features of anthracene and urea, a new low-molecular-weight gelator (LMWG, 1) with anthracene and urea moieties was designed and synthesized. A nontransparent gel of LMWG 1 in 1,2-dichloroethane was formed and characterized. Of particular interest is the observation of significant fluorescence enhancement after gelation, which is referred as to gelation-induced enhanced fluorescence emission. UV light irradiation of the THF solution of LMWG 1 yielded a photodimer with the h-t conformation. The photodimer can gel several organic solvents, including cyclohexane, n-hexane, and n-heptane. It should be mentioned that the gel based on the photodimer is rather stable. Our studies indicate that neither the gel phase based on LMWG 1 nor that based on the photodimer can be transformed to the solution by respective UV light irradiation or visible light irradiation/heating.
机译：通过结合蒽和尿素的特征，设计并合成了具有蒽和尿素部分的新型低分子量胶凝剂（LMWG，1）。形成并表征了LMWG 1在1,2-二氯乙烷中的不透明凝胶。特别令人感兴趣的是观察到凝胶化后荧光的显着增强，这被称为凝胶诱导的增强的荧光发射。 LMWG 1的THF溶液的紫外线照射产生具有h-t构象的光二聚体。光二聚体可以使几种有机溶剂胶凝，包括环己烷，正己烷和正庚烷。应该提到的是，基于光二聚体的凝胶是相当稳定的。我们的研究表明，基于LMWG 1的凝胶相和基于光电二聚体的凝胶相均不能通过相应的紫外线照射或可见光照射/加热而转化为溶液。

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