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

Low-molecular-weight polypropylene derivative molecules and method for assembling low-molecular-weight polypropylene derivative molecules into helical chiral nanometer material

A technology of helical chirality and nanomaterials, which is applied in the field of nanochemical material technology and chiral optics, can solve the problems of complex chiral assembly process, cumbersome molecular synthesis, and difficulty in practical application, and achieve uniform helical nanostructure morphology and preparation The method is simple and the effect of strong helical chiral signal

Active Publication Date: 2019-11-12
YANGZHOU UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current preparation of chiral nanostructures is usually based on organic molecules with relatively complex structures. The synthesis of such molecules is cumbersome and costly, and the chiral assembly process is also relatively complicated or requires the addition of other chemical substances. Such research is currently only in the experimental field. In the stage of laboratory research, it is still difficult to realize practical application

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
  • Low-molecular-weight polypropylene derivative molecules and method for assembling low-molecular-weight polypropylene derivative molecules into helical chiral nanometer material
  • Low-molecular-weight polypropylene derivative molecules and method for assembling low-molecular-weight polypropylene derivative molecules into helical chiral nanometer material
  • Low-molecular-weight polypropylene derivative molecules and method for assembling low-molecular-weight polypropylene derivative molecules into helical chiral nanometer material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Step (1): THF-soaked polypropylene flakes

[0028] Put 3×3cm flake polypropylene in a 50mL beaker, add 5mL of organic solvent tetrahydrofuran, cover and seal it, and place it at room temperature 25°C for 10 hours, take out the beaker, and take out the flake polypropylene with tweezers. At this time, the beaker The middle solution has been dissolved with oligopropylene derivative molecules.

[0029] Step (2): Aggregation and deposition of oligopropylene derivative molecules in a mixed solvent

[0030] In step (1) gained solution, add 2.5mL water (water / tetrahydrofuran volume ratio is 0.5), because tetrahydrofuran is miscible with water, solution is still homogeneous liquid phase, because the polarity of solvent increases, oligopropylene therein aggregates and sedimentation to obtain a suspended solution.

[0031] Step (3): Place the suspension solution obtained in step (2) at room temperature at 25°C for 5 hours to partially volatilize the solvent, and more flocculent ...

Embodiment 2

[0033] Step (1): THF-soaked polypropylene flakes

[0034] Put a 3×3cm polypropylene sheet or tube-shaped product in a 50mL beaker, add 5mL of organic solvent tetrahydrofuran, cover and seal it, and place it in an oven at 60°C for 3 hours, take out the beaker, and take out the sheet-shaped polypropylene with tweezers , at this time, the solution in the beaker has been dissolved with oligopropylene derivative molecules.

[0035] Step (2): Aggregation and deposition of oligopropylene derivative molecules in a mixed solvent

[0036] Add 5mL of water (water / tetrahydrofuran volume ratio is 1.0) in the solution gained in step (1), because tetrahydrofuran and water miscibility, solution is still homogeneous liquid phase, because the polarity of solvent increases, oligopropylene therein aggregates and deposits , to obtain a suspension solution.

[0037] Step (3): Bake the suspension solution obtained in step (2) under an infrared lamp at 60°C for 2 hours to partially volatilize the s...

Embodiment 3

[0039] Step (1): THF-soaked polypropylene flakes

[0040] Put a 3×3cm polypropylene sheet or tube-shaped product in a 50mL beaker, add 5mL of organic solvent tetrahydrofuran, cover and seal it, and place it in an oven at 60°C for 3 hours, take out the beaker, and take out the sheet-shaped polypropylene with tweezers , at this time, the solution in the beaker has been dissolved with oligopropylene derivative molecules.

[0041] Step (2): Aggregation and deposition of oligopropylene derivative molecules in a mixed solvent

[0042] Add 15 mL of water (water / tetrahydrofuran volume ratio is 3.0) to the solution obtained in step (1). Since tetrahydrofuran is miscible with water, the solution is still a homogeneous liquid phase. As the polarity of the solvent increases, the oligopropylene in it aggregates and deposits to obtain a suspension solution.

[0043] Step (3): Bake the suspension solution obtained in step (2) under an infrared lamp at 60°C for 2 hours to partially volatili...

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

No PUM Login to View More

Abstract

The invention discloses low-molecular-weight polypropylene derivative molecules and a method for assembling the low-molecular-weight polypropylene derivative molecules into a helical chiral nanometermaterial. A low-molecular-weight polypropylene derivative is a Gemini structure molecule, and is obtained by soaking sheet polypropylene (containing a sheet or tubular product of polypropylene) in anorganic solvent. Production of a helical chiral nanometer structure of the molecules comprises the steps of (1) dissolving the molecules in the organic solvent tetrahydrofuran; (2) adding certain volume of water into a solution of the step (1); and (3) placing a solution of the step (2) in an environment at normal temperature for a certain period of time to make the solvent partially volatilize until a large amount of sediment, which comprises the helical chiral nanometer material, appears in a system. According to the low-molecular-weight polypropylene derivative molecules and the method forassembling the low-molecular-weight polypropylene derivative molecules into the helical chiral nanometer material, the disclosed production process of the supramolecular chiral structure is simple andconvenient, the raw materials are easy to obtain, consumption is low, and energy is saved; and the obtained helical chiral nanometer material has the characters of being uniform in microstructure, excellent in chiral signal, good in environmental stability and the like, and can be applied to the fields of chiral recognition, chiral resolution, chiral sensing, chiral catalysis and the like.

Description

technical field [0001] The invention relates to the fields of nano chemical material technology and chiral optics technology, in particular to an oligopropylene derivative molecule and a method for assembling it into a helical chiral nano material. Background technique [0002] Chirality refers to the phenomenon that a system cannot completely coincide with its mirror image. Chirality is a common phenomenon in nature. For example, the winding direction of common plant vines is generally left-handed, and snail shells are usually right-handed; chirality is also an important aspect of life. The characteristic is that the amino acids in living organisms are all left-handed, while most of the sugar molecules are right-handed. The term chirality is very commonly used in the field of chemistry and medicine. A chiral molecule does not coincide with its mirror image. The chirality of a molecule is usually caused by an asymmetric carbon, that is, the four groups on one carbon are diff...

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
IPC IPC(8): C08J7/02C08J3/00B82Y40/00C08L23/12
CPCC08J7/02C08J3/00B82Y40/00C08J2323/12
Inventor 韩杰徐倩倩周传强
Owner YANGZHOU UNIV