Fluorescent hydrogel with excellent swelling performance and preparation method thereof

Abstract

The invention relates to fluorescent hydrogel with excellent swelling property and a preparation method of the fluorescent hydrogel. The fluorescent hydrogel with the excellent swelling property, after swollen fully in water, can be 43 times as heavy as gel in a natural dehydration state, acrylamide, methylene acrylamide, acrylamide adamantane and p-sulfonatocalix[4]arene tetrapropylene sodium salt, which are under the initiation of hydroxycyclohexyl phenyl ketone, are illuminated by light with a wave length of 365nm to generate chemical reaction, thereby generating a polyacrylamide compound. By utilizing the hydrophilia advantage of p-sulfonatocalix[4]arenesodium salt, the fluorescent hydrogel directly participates in the polymerization of the acrylamide by simply modifying a propenyl group so as to obtain the hydrogel with the excellent swelling property, and the swelling property of the hydrogel can be conveniently adjusted by simply adjusting the proportion of the p-sulfonatocalix[4]arene tetrapropylene sodium salt. By orthogonal recognition of an adamantane group and tetraphenyl ethylene cyclodextrin as well as pyridinium salt and the p-sulfonatocalix[4]arene tetrapropylene sodium salt, the fluorescent hydrogel which gives out dark blue light and gradually changes from white to yellow can be obtained.

Description

technical field [0001] The invention belongs to the technical field of intelligent materials, in particular to a hydrogel with excellent swelling performance, which can reach 43 times the quality of the gel in the natural dehydration state after being fully swollen in water, and obtain dark blue through the orthogonal recognition of swelling and supramolecules Preparation method of fluorescent hydrogel whose color changes from white to yellow. Background technique [0002] Hydrogel refers to the gel with water as the dispersion medium, and the swelling and shrinkage properties are the characteristics of the hydrogel with network crosslinked structure (see: M.Ni, N.Zhang, W.Xia, X.Wu, C.Yao, X.Liu, X.Y.Hu, C.Lin, L.Y.Wang, J.Am.Chem.Soc.2016, 138, 6643-6649), for its research in the fields of driving devices, drug delivery, biosensing, etc. Application lays the groundwork. Hydrogels with good swelling performance usually contain abundant hydrophilic groups and hydrophobic g...

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Problems solved by technology

However, the current methods for preparing fluorescent tunable hydrogels are mostly limited to the serious environmental pollution caused by heavy metals, or the implantation of fluorescent units before the formation of gels, which cannot conveniently achieve tunable fluorescence.

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