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

Porous organic polymer LNUs containing pyrene structural unit, and preparation method and application thereof

A technology of structural units and polymers, applied in instruments, analytical materials, measuring devices, etc., can solve the problems of high cost and poor operability, and achieve the effects of high sensitivity, wide applicability and good selectivity

Active Publication Date: 2019-09-13
LIAONING UNIVERSITY
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional methods for detecting iron ions, such as spectrophotometry, inductively coupled plasma, cathode and anode stripping voltammetry, liquid chromatography, etc., although these methods have high detection capabilities, they are expensive and poor in operability

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
  • Porous organic polymer LNUs containing pyrene structural unit, and preparation method and application thereof
  • Porous organic polymer LNUs containing pyrene structural unit, and preparation method and application thereof
  • Porous organic polymer LNUs containing pyrene structural unit, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The preparation of embodiment 1 porous organic polymer LNU-22 containing pyrene structural unit

[0036] (1) Synthesis of LNU-22

[0037] 300.8 mg of 1,3,6,8-tetrabromopyrene (0.579 mmoL) and 744.1 mg of 2,7-bis(4,4,5,5-tetramethyl-1,3-dioxo-2- Put boryl)-9,9 dioctylfluorene (1.158mmoL) into a 100mL round-bottomed flask, add 60mL DMF, freeze it with liquid nitrogen, evacuate it with an oil pump, blow nitrogen to normal pressure, and repeat the cycle three times. Then 40mg of tetrakis(triphenylphosphine)palladium and 5mL of potassium carbonate solution (2moL / L) were quickly added to the round bottom flask, the above reaction system was evacuated, nitrogen was vented to normal pressure, and the cycle was repeated three times. After thawing, it was put into React at a temperature of 130°C for 48h and cool to room temperature.

[0038] (2) Post-processing of LNU-22

[0039] The above product was washed with water, N,N'-dimethylformamide, tetrahydrofuran and acetone sever...

Embodiment 2

[0041] The preparation of embodiment 2 the porous organic polymer LNU-23 that contains pyrene structural unit

[0042]Replace monomer 2,7-bis(4,4,5,5-tetramethyl-1,3-dioxo-2-boryl)-9,9dioctylfluorene with 1,2-bisphenyl Pinacol diboronic acid ester (382.3mg, 1.158mmoL), repeat Example 1, the green powder obtained is LNU-23 of the present invention. The synthetic route of LNU-23 is shown below.

[0043]

Embodiment 3

[0044] The preparation of embodiment 3 porous organic polymer LNU-24 containing pyrene structural unit

[0045] Replace monomer 2,7-bis(4,4,5,5-tetramethyl-1,3-dioxo-2-boryl)-9,9dioctylfluorene with 1,3-bisphenyl Pinacol diboronic acid ester (382.3mg, 1.158mmoL), repeat example 1, the green powder obtained is LNU-24 of the present invention. The synthetic route of LNU-24 is shown below.

[0046]

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 particularly relates to a porous organic polymer containing a pyrene structural unit, and a preparation method and application thereof, belonging to the field of new material technology.The preparation method comprises the following steps: separately adding 1,3,6,8-tetrabromopyrene and a boric acid-containing compound into a round-bottom flask, then adding the solvent DMF, carryingout freezing by using liquid nitrogen, performing vacuumization via an oil pump, introducing nitrogen until atmospheric pressure is obtained, and carrying out repeated circulation three times; rapidlyadding tetrakis(triphenylphosphine)palladium and a potassium carbonate solution into the round-bottom flask, performing vacuumization, introducing nitrogen until atmospheric pressure is obtained, andcarrying out repeated circulation three times; after thawing, carrying out a reacted at a high temperature for 48-60 h, and performing cooling to room temperature; subjecting a product obtained in the previous step to washing with water, N,N'-dimethylformamide, tetrahydrofuran and acetone successively for a plurality of times to obtain a crude product; and then subjecting the crude product to Soxhlet extraction with tetrahydrofuran, chloroform and dichloromethane successively, and performing drying under vacuum at 90-150 DEG C for 24 h so as to obtain the target product LNUs. The LNUs prepared by the invention can be used for detecting Fe<3+> ions in an environment, and has good selectivity and high sensitivity; and a detection method is simple and practical.

Description

technical field [0001] The invention belongs to the technical field of new materials, and in particular relates to a class of porous organic polymers containing pyrene structural units and a preparation method and application thereof. Background technique [0002] Whether it is normal body activities or human living environment, metal ions play an important role, Fe 3+ Ions are one of them, and they play an important role in helping different proteins deliver oxygen to the body. However, taking too much or too little iron ions can have adverse effects. Excessive iron ions in the body can cause acute iron poisoning and chronic iron poisoning; iron deficiency can cause dizziness, tinnitus, inability to concentrate or decrease memory, and even cause diseases such as hepatitis, hemochromatosis, and functional disorders. Iron is an abundant element in the earth's crust. At present, the use of iron due to human production activities has caused serious pollution to the atmosphere...

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): C08G61/10G01N21/64
CPCC08G61/10G01N21/6428G01N21/643C08G2261/18C08G2261/314C08G2261/3142C08G2261/411G01N2021/6432
Inventor 闫卓君冯彬夏立新布乃顺张谦刘枫李予博
Owner LIAONING UNIVERSITY