College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, P. R. China.
Soft Matter. 2019 Dec 11;15(48):9881-9885. doi: 10.1039/c9sm02004g.
Supramolecular hydrogels have received considerable attention because of their various fascinating applications. Herein, an alkyl chain-modified oligo(p-phenylenevinylene) (Py-OPV) derivative was synthesized. When assembled with cucurbit[7]uril, its fluorescence intensity was enhanced without any change in color. However, the molecules underwent J-type dimerization when encased in the cavity of cucurbit[8]uril, which possessed different emission properties based on the monomer. By simply changing the concentration of cucurbit[8]uril, the fluorescence properties of the assemblies were easily altered. In addition, luminescent supramolecular hydrogels were constructed with Py-OPV and cucurbit[8]uril based on the photopolymerization of acrylamide. By embedding the assembly in the polymer to confine it, hydrogels emitting various tones of blue light were easily constructed. The preparation method of such luminescent hydrogels provides a new reference method for the construction of specific luminescent materials.
超分子水凝胶因其具有各种迷人的应用而受到广泛关注。在此，合成了一种烷基链修饰的寡聚（对苯乙烯撑乙烯）（Py-OPV）衍生物。当与葫芦[7]脲组装时，其荧光强度增强，而颜色没有任何变化。然而，当分子被葫芦[8]脲包裹在腔内时，它们会发生 J 型二聚化，从而具有基于单体的不同发射特性。通过简单地改变葫芦[8]脲的浓度，很容易改变组装体的荧光性质。此外，基于丙烯酰胺的光聚合，用 Py-OPV 和葫芦[8]脲构建了发光超分子水凝胶。通过将组装体嵌入聚合物中以限制其，很容易构建出发射各种色调蓝光的水凝胶。这种发光水凝胶的制备方法为构建特定发光材料提供了一种新的参考方法。
