Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of viologen compound

A compound and viologen technology, applied in chemical instruments and methods, compounds of Group 5/15 elements of the periodic table, organic chemistry, etc., can solve the problems of slow response time of electrochromic materials, reduce the conductivity and save energy Energy, the effect of short response time

Inactive Publication Date: 2013-02-06
高金菊
View PDF1 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem of slow response time of electrochromic materials existing in the prior art, the present invention provides a preparation method of viologen compound, which can realize rapid color change of electrochromic materials

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
  • Preparation method of viologen compound
  • Preparation method of viologen compound
  • Preparation method of viologen compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of preparation method of viologen compound of present embodiment 1, its steps are:

[0026] (1) Dissolve 0.05mol of 4,4'-bipyridine in 50ml of acetonitrile to obtain a 4,4'-bipyridine solution, and stir at a constant temperature of 50°C; another 0.05mol of 2-bromobutylphosphonic acid di Ethyl ester was dissolved in 70ml of acetonitrile, after mixing evenly, it was slowly dropped into the 4,4'-bipyridine solution, reacted for 24h, washed with anhydrous ether, filtered, and dried in vacuum to obtain light yellow [1-( 2-Butylphosphonic acid diethyl)-4,4'-pyridine] bromide solid, the reaction formula is as follows:

[0027]

[0028] (2) Dissolve 0.03 mol of the solid product obtained in step (1) in 50 ml of methanol, add 0.015 mol of α,α'-dibromo-p-xylene, stir at 70°C, react for 24 hours, and use anhydrous ether Wash, filter, and dry in vacuo to obtain brown-yellow 1,1'-[1,4-phenylenebis(methylene)]bis[1'-(2-butylphosphonic acid diethyl)-4,4 '-pyridine] tetrabr...

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 a preparation method of a viologen compound, belonging to the field of electrochromic materials. The preparation method comprises the following steps of: (1) dissolving 4, 4'-bipyridyl in excess acetonitrile, dissolving 2-bromobutyl phosphonic acid diethyl ester in the excess acetonitrile, further dripping into a 4, 4'-bipyridyl solution, reacting for 24h, washing, filtering and drying to obtain a (1-(diethyl 2-butylphosphonate)-4, 4'-pyridine) bromide solid; (2) dissolving the prepared solid in methanol, further adding alpha, alpha'-dibromo-p-xylene, stirring at constant temperature, washing, filtering, and performing vacuum drying to obtain a 1, 1'-(1,4-phenylene-bis (methylene))-bis-(1'-(diethyl 2-butylphosphonate)-4,4'-pyridine) tetrabromide solid; and (3) dissolving the prepared product in the step (2) in the methanol, adding concentrated hydrochloric acid, stirring at constant temperature, washing, filtering and drying to obtain 1,1'-(1,4-phenylene-bis (methylene))-bis-(1'-(2-butylphosphonic acid)-4,4'-pyridine) tetrachloride. The viologen compound prepared by the preparation method disclosed by the invention can realize rapid changes in color of the electrochromic materials.

Description

technical field [0001] The invention belongs to the field of electrochromic materials, and more specifically relates to a preparation method of a viologen compound. Background technique [0002] Electrochromism refers to the phenomenon that the optical properties (transmittance or reflectance, etc.) of materials produce stable and reversible changes in the visible light range under the drive of an applied voltage. In appearance, electrochromic materials usually exhibit reversible changes in color and transparency. At present, a variety of products using electrochromic materials have been launched on the market, such as: car rearview mirrors for reducing glare, smart windows that adjust the ability to reflect or absorb sunlight according to light changes, etc. [0003] Organic electrochromic materials achieve reversible changes in coloring and fading through their redox reactions. Its advantages are: fast color change, large viewing angle, high contrast between coloring and...

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): C07F9/6558C09K9/02
Inventor 高金菊
Owner 高金菊
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com