New organogels based on an anthracene derivative with one urea group and its photodimer: Fluorescence enhancement after gelation

被引：97

作者：

Wang, Cheng

Zhang, Deqing ^{[1
]}

Xiang, Junfeng

Zhu, Daoben

机构：

[1] Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Organ Solids Lab, Beijing 100080, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100080, Peoples R China

来源：

LANGMUIR | 2007年 / 23卷 / 18期

关键词：

D O I：

10.1021/la701142d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

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.

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收藏

页码：9195 / 9200

页数：6

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