Supramolecular hydrogel-based AIEgen: Construction and dual-channel recognition of negative charged dyes
| Autor: | Hong Yao, Tai-Bao Wei, Qi Lin, Qi Zhou, Fan Yanqing, Guan Xiaowen, Xiao-Tong Kan, Wang Jiao, You-Ming Zhang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Xylenol orange Cyclodextrin Process Chemistry and Technology General Chemical Engineering technology industry and agriculture Supramolecular chemistry macromolecular substances 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Molecular recognition chemistry Methyl orange Molecule Titration 0210 nano-technology Two-dimensional nuclear magnetic resonance spectroscopy |
| Zdroj: | Dyes and Pigments. 167:16-21 |
| ISSN: | 0143-7208 |
| DOI: | 10.1016/j.dyepig.2019.04.011 |
| Popis: | It is noteworthy that highly selective molecular recognition endows host-guest gels, especially hydrogel, with valuable properties. Therefore, in pure water, a supramolecular hydrogel (SH-α-CD) was constructed by using benzimidazolium-based positive charged guest molecule (J2) assembled with cyclodextrin (α-CD) through host-guest interaction, and accompanied an aggregation-induced emission (AIE). The self-assemble process of the hydrogel-based AIEgen was investigated using 1H NMR titration, 2D NOESY, XRD and SEM. In particular, the hydrogel-based AIEgen was investigated as a good candidate for fluorescent quenching and gel state destruction dual-channel recognizing negative charged dye molecule methyl orange (MO). The competitive inclusion interaction triggered the dissolution of aggregate, which induced the gel to transform into sol, with disappearance of the AIE of SH-α-CD. However, the addition of the competitive dye molecules methylene blue (MB) and xylenol orange (XO) only made the fluorescence quenching of hydrogel-based AIEgen. Meanwhile, the hydrogel-based AIEgen also exhibited an excellent thermal responsiveness under temperature transition. Such a performance is highly beneficial for potential applications in probe material for organic dye molecules. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect