Unlock instant, AI-driven research and patent intelligence for your innovation.

Ion identification type intelligent macromolecule material, preparing method and use thereof

An intelligent polymer and ion recognition technology, which is applied in the direction of material excitation analysis, investigation stage/state change, fluorescence/phosphorescence, etc., can solve the problems of inability to change water solubility, fluorescence quenching, and limitation of application range, so as to facilitate research and development, strong recognition response ability, and simple preparation method

Inactive Publication Date: 2009-12-09
SICHUAN UNIV
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to Ba 2+ The importance in living organisms is not as high as that of alkali metal ions, so the application range of this smart polymer material in molecular recognition is limited
[0004] Poly(phenylene acetylene) structures with oxymethyl 15-crown-5 para-substituted poly(phenylene acetylene) structures have been reported to respond to K in the environment + The characteristic of fluorescence quenching caused by ions, so as to achieve the K + Ion-selective recognition function (see Angew.Chem.Int.Ed, 2000, 39, 3868); but this material is a linear rigid polymer material, which cannot change its water solubility and cannot sense the temperature in the environment changes, and the fluorescence effect is not obvious

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ion identification type intelligent macromolecule material, preparing method and use thereof
  • Ion identification type intelligent macromolecule material, preparing method and use thereof
  • Ion identification type intelligent macromolecule material, preparing method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In this example, benzo-15-crown-5-acrylamide monomer and N-isopropylacrylamide monomer are used as basic raw materials, and the molar percentage of benzo-15-crown-5-acrylamide monomer is 0.1%. , the molar percentage of N-isopropylacrylamide monomer is 99.9%, and the process steps are as follows:

[0038] (1) Ingredients

[0039] Dissolve benzo-15-crown-5-acrylamide monomer and N-isopropylacrylamide monomer in tetrahydrofuran at room temperature (15°C) and normal pressure to prepare a monomer solution with a molar concentration of 1%. And adding polymerization initiator azobisisobutyronitrile in the monomer solution, the addition amount of azobisisobutyronitrile is 0.5% of the total molar weight of the two monomers in the solution;

[0040] (2) Polymerization reaction

[0041] Introduce nitrogen gas into the monomer solution containing azobisisobutyronitrile prepared in step (1), remove dissolved oxygen in the solution by bubbling for 30 minutes and seal it, then place...

Embodiment 2

[0047] In this example, benzo-15-crown-5-acrylamide monomer and N-isopropylacrylamide monomer are used as basic raw materials, and the molar percentage of benzo-15-crown-5-acrylamide monomer is 50%. , the molar percentage of N-isopropylacrylamide monomer is 50%, and the process steps are as follows:

[0048] (1) Ingredients

[0049] Dissolve benzo-15-crown-5-acrylamide monomer and N-isopropylacrylamide monomer in N,N-dimethylformamide at room temperature (20°C) and normal pressure, and prepare mole A monomer solution with a concentration of 20%, and a polymerization initiator azobisisobutyronitrile is added to the monomer solution, and the amount of azobisisobutyronitrile added is 5% of the total molar weight of the two monomers in the solution;

[0050] (2) Polymerization reaction

[0051] Introduce nitrogen gas into the monomer solution containing azobisisobutyronitrile prepared in step (1), remove dissolved oxygen in the solution by bubbling for 45 minutes and seal it, th...

Embodiment 3

[0057] In this example, benzo-15-crown-5-acrylamide monomer and N-isopropylacrylamide monomer are used as basic raw materials, and the molar percentage of benzo-15-crown-5-acrylamide monomer is 20%. , the mole percent of N-isopropylacrylamide monomer is 80%, and the process steps are as follows:

[0058] (1) Ingredients

[0059] Dissolve benzo-15-crown-5-acrylamide monomer and N-isopropylacrylamide monomer in tetrahydrofuran at room temperature (28°C) and normal pressure to prepare a monomer solution with a molar concentration of 3%. And adding polymerization initiator azobisisobutyronitrile in the monomer solution, the addition of azobisisobutyronitrile is 2% of the total molar weight of the two monomers in the solution;

[0060] (2) Polymerization reaction

[0061] Introduce nitrogen gas into the monomer solution containing azobisisobutyronitrile prepared in step (1), remove dissolved oxygen in the solution by bubbling for 30 minutes and seal it, then place it in an oil ba...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
lower critical solution temperatureaaaaaaaaaa
Login to View More

Abstract

The invention provides an ion recognition type intelligent polymer material-poly(N-isopropylacrylamide-copolymerization-benzo-15-crown-5-acrylamide), which is composed of N-isopropylacrylamide monomer It is formed by polymerizing with benzo-15-crown-5-acrylamide monomer, and its structural formula is as follows: in the above structural formula, x is the mole percentage of benzo-15-crown-5-acrylamide group, and its scope is 0.1% ~50%, 1-x is the mole percentage of N-isopropylacrylamide groups, and the range is 50% to 99.9%. The process steps of the preparation method are: batching, polymerization, separation and purification and drying. This material is used in sensors, actuators, fluorescence analysis, and selective extraction and separation of alkali metal ions.

Description

technical field [0001] The invention relates to an intelligent high molecular material, in particular to an organic high molecular polymer capable of selectively responding to specific ions in the environment and a preparation method thereof. Background technique [0002] Intelligent polymer materials (intelligent polymer) have the property of responding to changes in physical, chemical and biological information in the environment, thereby causing rapid changes in their physical properties or functions. This property is similar to the rapid response of organisms to environmental changes in nature, which has attracted widespread attention and attention from scientists at home and abroad. Many metal ions widely exist in organisms and play an important role in organisms. The use of smart polymer materials to recognize and respond to metal ions, especially alkali metal ions, has become a research hotspot in recent years, showing broad application prospects. [0003] The supra...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/56C08F220/58C08F4/04C08F2/06G01N25/12G01N21/64
Inventor 米鹏褚良银
Owner SICHUAN UNIV