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首页> 外文期刊>Chemistry: A European journal >Functional Organogel Based on a Salicylideneaniline Derivative with Enhanced Fluorescence Emission and Photochromism
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Functional Organogel Based on a Salicylideneaniline Derivative with Enhanced Fluorescence Emission and Photochromism

机译：基于水杨基苯胺衍生物的功能性有机凝胶，具有增强的荧光发射和光致变色作用

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摘要

A new organogelator based on a salicylideneaniline derivative with cholesterol moieties was synthesized, and it was proposed that it could gelate various organic solvents, such as 1-bu-tanol, 1-octanol, butyl acetate, tetra-chloromethane, benzene, toluene through combination with a gelation test. From the results of analysis by UV/Vis absorption, circular dichroism (CD), X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) studies and semiempirical (AM1) calculations, we believed that the gelator molecules could self-assemble into left-handed helical nanofibers through unimolecular layer packing, which further twisted into the thicker fibers and constructed 3D networks in the gel phase. Interestingly, the organogel exhibited strong fluorescence enhancement relative to a solution of the same concentration because of the formation of J aggregations. Meanwhile, photochromism of the organogel could take place under UV-light irradiation. Both strong fluorescence emission and photochromism properties were concurrent in one system based on a salicylideneaniline derivative. It was suggested that the self-assembly of the functional organogelator could lead to unique photophysical properties.
机译：合成了一种新的基于水杨基苯胺衍生物和胆固醇部分的有机胶凝剂，并提出该胶凝剂可以通过结合使1-丁醇，1-辛醇，乙酸丁酯，四氯甲烷，苯，甲苯等各种有机溶剂胶凝。进行胶凝测试。通过UV / Vis吸收，圆二色性（CD），X射线衍射（XRD），扫描电子显微镜（SEM）和透射电子显微镜（TEM）研究以及半经验（AM1）计算的分析结果，我们认为胶凝剂分子可以通过单分子层堆积自组装为左旋螺旋纳米纤维，进一步缠结成较粗的纤维并在凝胶相中构建3D网络。有趣的是，相对于相同浓度的溶液，有机凝胶由于J聚集的形成而显示出强烈的荧光增强作用。同时，有机凝胶的光致变色可在紫外光照射下发生。在一个基于水杨基苯胺衍生物的系统中，强荧光发射和光致变色特性同时存在。有人认为，功能性有机胶凝剂的自组装可导致独特的光物理性质。

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