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Fluorescent active cellulose gel based on polyionic liquid as well as preparation and application thereof

A cellulose gel, polyionic liquid technology, used in gel preparation, fluorescence/phosphorescence, luminescent materials, etc., can solve problems such as lack of luminescence, and achieve the effect of good luminescence ability

Inactive Publication Date: 2020-11-10
XIJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a fluorescent active cellulose gel based on polyionic liquid and its preparation and application, which solves the problem of lack of luminescence of traditional cellulose materials and has good luminescence ability

Method used

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  • Fluorescent active cellulose gel based on polyionic liquid as well as preparation and application thereof
  • Fluorescent active cellulose gel based on polyionic liquid as well as preparation and application thereof
  • Fluorescent active cellulose gel based on polyionic liquid as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The above-mentioned preparation method of fluorescent active cellulose gel based on polyionic liquid, the method comprises:

[0046] (1) Synthesis of epoxy-containing ionic liquid monomer

[0047] The synthetic route is:

[0048]

[0049] 1-Vinylimidazole (1.88 g, 20 mmol) and epichlorohydrin (1.86 g, 20 mmol) were mixed in a flask and stirred at 50° C. for 24 h under a nitrogen atmosphere.

[0050] After the reaction was finished, the precipitate was washed with acetone (5×60 mL), and dried under vacuum to obtain a dark red solid, namely epoxy-containing ionic liquid monomer [GVIM]Cl.

[0051] Ion exchange process: Dissolve [GVIM]Cl in water, and add an equimolar ratio of ion exchange reagents, such as AgNO 3 , stirred at room temperature for 24h.

[0052] Such as figure 1 Shown, be the nuclear magnetic spectrum of the [GVIM]Cl prepared by the present invention, its characterization data is: 1 H NMR (300MHz, DMSO-d6, TMS): δ9.81-7.92 (imidazole ring, 3H), δ7.58...

Embodiment 2

[0062] The preparation method of the above-mentioned fluorescent active cellulose gel based on polyionic liquid is basically the same as that of Example 1, the difference is:

[0063] In step (1), the alkylation reagent that adopts when synthesizing the ionic liquid monomer containing epoxy is epoxy chlorobutane, and its synthetic route is:

[0064]

[0065] In step (2), the route of synthetic PIL macromolecular chain modification reagent is:

[0066]

Embodiment 3

[0068] The preparation method of the above-mentioned fluorescent active cellulose gel based on polyionic liquid is basically the same as that of Example 1, the difference is:

[0069] In step (1), the alkylation reagent that adopts when synthesizing the ionic liquid monomer containing epoxy is epoxy chlorobutane, and its synthetic route is:

[0070]

[0071] In step (2), the route of synthetic PIL macromolecular chain modification reagent is:

[0072]

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Abstract

The invention discloses fluorescent active cellulose gel based on polyionic liquid as well as preparation and application thereof. The fluorescent active cellulose gel is obtained by reacting a PIL macromolecular modification reagent with cellulose treated by a urea alkaline aqueous solution at 40-80 DEG C, wherein the PIL macromolecular modification reagent is obtained by RAFT copolymerization reaction of an ionic liquid monomer and a luminous monomer. The gel has good luminescence capability. According to the method disclosed by the invention, through the design of the PIL macromolecular chain modification compound which contains halogen or epoxy, and has a functional group capable of reacting with cellulose, the compound can react in a harsh water alkaline environment and under a homogeneous condition, and can react with dissolved cellulose in an alkaline solvent system.

Description

technical field [0001] The invention relates to a cellulose gel, in particular to a polyionic liquid-based fluorescent active cellulose gel and its preparation and application. Background technique [0002] In recent years, due to the increasing depletion of non-renewable resources and the global energy crisis, the research and utilization of biomass resources have attracted widespread attention. In the past, the preparation and synthesis of materials often used petroleum and its derivatives as raw materials. The process was cumbersome, the cost was high, the raw materials were not renewable, and it caused irreversible damage to the ecological environment. Biomass-based materials are green, renewable, and environmentally friendly. etc. Its design and construction have become the frontier and hot spot of basic scientific and technological research. [0003] In recent years, the use of green biomass primitives to construct optical materials with singular properties has attrac...

Claims

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Application Information

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IPC IPC(8): C08G81/02B01J13/00C09K11/06G01N21/64
CPCB01J13/0065C08G81/02C09K11/06C09K2211/1416C09K2211/145C09K2211/1466G01N21/6428G01N2021/6439
Inventor 宋文琦高博罗晨訾帅杨金腾刘玉琨
Owner XIJING UNIV
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