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Method for preparing large-area Ni-BHT conductive thin film MOFs by self-assembly of interface confinement domain

A conductive film and self-assembly technology, which is applied in the manufacture of circuits, electrical components, cables/conductors, etc., can solve the problems of trivial film formation, high thickness, and cumbersome preparation conditions, and achieve improved conductivity, excellent performance, and improved film formation The effect of the situation

Active Publication Date: 2022-03-18
FUDAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation conditions of the Ni-BHT conductive thin film MOFs reported so far are not only cumbersome, but also the formation of the film is relatively trivial and the thickness is higher than 100nm, which not only increases the difficulty of device preparation, but also prevents it from showing its excellent sensing performance.

Method used

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  • Method for preparing large-area Ni-BHT conductive thin film MOFs by self-assembly of interface confinement domain
  • Method for preparing large-area Ni-BHT conductive thin film MOFs by self-assembly of interface confinement domain
  • Method for preparing large-area Ni-BHT conductive thin film MOFs by self-assembly of interface confinement domain

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1 (comprising comparative example)

[0022] (1) Weigh 5mM (745mg) Ni(NO 3 ) 2 ·6H 2 Dissolve O in a 500mL large beaker, then transfer 30mL to 3 small beakers for use;

[0023] (2) Weigh 1mM (5mg) BHT and dissolve in 20mL chlorobenzene;

[0024] (3) Number the three small beakers as No. 1, No. 2 and No. 3 respectively. Wherein the solution in the No. 0 beaker is a blank control group without adding any surfactant. Add surfactant PVP to the solution in No. 1 beaker, the addition amount is 0.1 mg; add surfactant TBAB to the solution in No. 2 beaker, the addition amount is 1 mg;

[0025] (4) Use a pipette gun to pipette 20uL of the ligand solution and drop it on the liquid surface of the solution in each beaker. At this time, the ligand solution will spread into a circle on the surface of the salt solution;

[0026] (5) The reaction system was left to react at room temperature for 12 hours.

[0027] After 12 hours, the MOFs films formed in the three beaker...

Embodiment 2

[0037] (1) Weigh 1mM (149mg) Ni(NO 3 ) 2 ·6H 2 Dissolve O in a 500mL large beaker, then transfer 30mL to 2 small beakers for use;

[0038] (2) Weigh 2mM (10mg) BHT and dissolve in 10mL chlorobenzene;

[0039] (3) Number the two small beakers as No. 1 and No. 2 respectively; add the surfactant PVP to the solution in the No. 1 beaker, and the addition amount is 1 mg; add the surfactant TBAB to the solution in the No. 2 beaker, and the addition amount is 0.1 mg ;

[0040] (4) Use a pipette gun to pipette 200uL of the ligand solution and drop it on the liquid surface of the solution in each beaker. At this time, the ligand solution will spread into a circle on the surface of the salt solution;

[0041] (5) The reaction system was left to react at room temperature for 10 hours.

[0042] After 12 hours, the MOFs films formed in the three beakers were observed by electron microscopy: the films formed in the two small beakers were scooped up with a clean silicon wafer, and the fi...

Embodiment 3

[0044] (1) Weigh 2mM (298mg) Ni(NO 3 ) 2 ·6H 2 Dissolve O in a 500mL large beaker, then transfer 30mL to 2 small beakers for use;

[0045] (2) Weigh 3mM (15mg) BHT and dissolve in 50mL chlorobenzene;

[0046] (3) Number the two small beakers as No. 1 and No. 2 respectively; add the surfactant PVP to the solution in the No. 1 beaker, and the addition amount is 10 mg; add the surfactant TBAB to the solution in the No. 2 beaker, and the addition amount is 10 mg;

[0047] (4) Use a pipette gun to pipette 100uL of the ligand solution and drop it on the liquid surface of the solution in each beaker. At this time, the ligand solution will spread into a circle on the surface of the salt solution;

[0048] (5) The reaction system was left to react at room temperature for 8 hours.

[0049] After 12 hours, the MOFs films formed in the three beakers were observed by electron microscopy: the films formed in the two small beakers were scooped up with a clean silicon wafer, and the film ...

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Abstract

The invention belongs to the technical field of functional thin films, and specifically relates to a method for preparing large-area Ni-BHT conductive thin film MOFs by interface-confined domain self-assembly. In the present invention, the metal ion compound adopts Ni(NO3) 2 ·6H 2 O, hexamercaptobenzene (BHT) is used as the organic ligand, and polyvinylpyrrolidone or tetrabutylammonium bromide is used as the surfactant; large-area, ultra-thin Ni‑BHT conductive thin film MOFs are obtained by using interfacial confinement domain self-assembly technology. The method of the invention has simple operation and mild conditions, and the prepared MOFs thin film has excellent performance and greatly improved electrical conductivity.

Description

technical field [0001] The invention belongs to the technical field of functional thin films, and in particular relates to a method for preparing Ni-MOFs thin films. Background technique [0002] MOFs (Metal organic Framework, referred to as MOFs, that is, metal organic framework materials) are a type of periodic network structure formed by self-assembly of inorganic metal centers (metal ions or metal clusters) and bridging organic ligands. Crystalline porous material. MOFs is an organic-inorganic hybrid material, also known as a coordination polymer, which is different from both inorganic porous materials and general organic complexes. It has both the rigidity of inorganic materials and the flexibility of organic materials. MOFs have the characteristics of porosity, large specific surface area, structural and functional diversity, and unsaturated metal sites, which make them widely used in modern material research fields such as gas sensing, adsorption and separation of H...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08L87/00C08G83/00H01B13/00
CPCC08J5/18C08G83/008H01B13/00C08J2387/00
Inventor 王帅陈欣吴凡
Owner FUDAN UNIV