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

Electroluminescent polymer and its preparation method and application

A technology of luminescence and polymers, applied in the field of electroluminescence polymers, can solve the problems of low electroluminescence efficiency, poor thermal stability, and inability to meet the needs of practical applications in the field of electroluminescence, and achieve good film-forming properties, The effect of high electroluminescent performance and good thermal stability

Inactive Publication Date: 2008-04-30
SHANGHAI TECHSUN ANTI COUNTERFEITING TECH HLDG
View PDF1 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The Chinese patent application number 200410053856.1 discloses a poly(p-phenylene vinylene derivative), its preparation method and its application in electroluminescence. However, the defects of this patent are that the electroluminescence efficiency is low and the thermal stability is relatively low Poor, so it cannot meet the needs of practical applications in the field of electroluminescence

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
  • Electroluminescent polymer and its preparation method and application
  • Electroluminescent polymer and its preparation method and application
  • Electroluminescent polymer and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) Under the protection of nitrogen, in a 250ml three-necked flask, add 0.05mol of Grignard salt formed by 4-p-bromophenyl-7-phenyl-2,1,3-benzothiadiazole and metal magnesium and 500ml Anhydrous tetrahydrofuran, add 0.25 grams of nickel chloride, add 18.7 grams (0.1mol) of 1,2-dibromoethane, reflux reaction for 72 hours, evaporate excess 1,2-dibromoethane under reduced pressure, and then dissolve in ethanol Recrystallization in medium yielded the following compound:

[0046]

[0047] Elemental analysis: test value: C: 60.52% H: 3.91% Br: 20.33%) N: 7.03%

[0048] Theoretical value: C: 60.77%) H: 3.82% Br: 20.21%) N: 7.09%

[0049] (2) Under nitrogen protection, 38.0 grams (0.1mol) of 9-butyl-2,7-dibromofluorene and 100ml of anhydrous tetrahydrofuran were added to a 250ml three-necked flask, and 5.4 grams (0.1mol) of sodium methoxide was added as a catalyst. Add 39.5 g (0.1 mol) of the product from the previous step at 20°C, react at 20°C for 24 hours, evaporate th...

Embodiment 2

[0060] Under the protection of nitrogen, in a 250ml three-necked flask, add 0.05mol 4-[5-(2-bromothienyl)]-7-phenyl-2,1,3-benzothiadiazole and metal magnesium to form a lattice Add 2.5 grams of nickel chloride and 100 ml of anhydrous tetrahydrofuran, add 93.5 grams (0.5 mol) of 1,2-dibromoethane, reflux reaction for 24 hours, and evaporate excess 1,2-dibromoethane under reduced pressure , and then recrystallized in ethanol to obtain the compound as follows:

[0061]

[0062] Elemental analysis: test value: C: 47.20% H: 2.66% Br: 19.80%) N: 6.81%

[0063] Theoretical value: C: 47.17%) H: 2.72% Br: 19.61%) N: 6.88%

[0064] Under the protection of nitrogen, add 38.0 grams (0.1mol) of 9-butyl-2,7-dibromofluorene and 500ml of anhydrous tetrahydrofuran into a 250ml three-necked flask, add 96 grams (1mol) of potassium tert-butoxide as a catalyst, and heat at 60°C Add 61 g (0.15 mol) of the product from the previous step, react at 60° C. for 1 hour, evaporate the solvent under r...

Embodiment 3

[0075] Fabrication of electroluminescent sandwich devices:

[0076] Prepare thin film components with sandwich structure, such as the devices reported in Chemistry of Materials 2003, 15, 269-274.

[0077] The sequence of each layer is as follows: ITO anode / PEDOT:PSS / electroluminescent polymer material / Ba / Al. The production method mainly includes the following steps: after cleaning and drying the ITO, spin-coat PEDOT:PSS with a thickness of 80-100nm on it;

[0078] (Poly(3,4-ethylenedioxythiophene)poly(styrenesulfonate, Bayer's BAYTRON  P AL4083 product), dried at 200°C for 15 minutes, and then spin-coated an electroluminescent polymer material with a thickness of 70-100nm, and then in 3×10 -4 Ba with a thickness of 10 nm and Al with a thickness of 200 nm were vapor-deposited at a vacuum degree of pa. The electroluminescent polymer materials used therein are the luminescent materials prepared in Examples 1 and 2 respectively, and the comparative example is MEH-PPV (poly(2-...

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
Molecular weightaaaaaaaaaa
Dispersionaaaaaaaaaa
Dispersionaaaaaaaaaa
Login to View More

Abstract

The invention provides electro luminescent polymer and the preparation method thereof as well as the application thereof. The electro luminescent polymer of the invention contains a chromophoric group inside, and has higher electroluminescence performance as well as good film-forming property and good thermal stability, the main body luminescent material of the invention can transfer energy to the chromophoric group in a molecule, the energy transmission is more effective, and the chromophoric group is fixed on a high molecule chain by a shared electron bond; the crystalline cannot occur, and the electro luminescent polymer has good film-forming property and good thermal stability as well as higher luminescence performance. The electro luminescent polymer of the invention can be used for preparing a photo-electric device, wherein, the electro luminescent polymer comprises an EL device self selected by the photo-electric device, a photovoltaic battery, a field-effect transistor, a light emitting diode, an optical-electronic chemical battery and so on. The structural general formula refers to a Figure.

Description

technical field [0001] The invention relates to an electroluminescent polymer with luminous performance, a preparation method and an application thereof. Background of the invention [0002] Since Burroughs et al. of the University of Cambridge first reported the electroluminescence phenomenon of poly-p-phenylene vinylene (PPV) in 1990, due to the characteristics of simple process and easy realization of large-screen display and flexible display, people have paid attention to electroluminescent polymer materials. and devices have generated great interest, and a series of in-depth studies have been carried out in this field. Electroluminescence is the process of converting electrical energy into light energy. This process can be summarized into the following five steps: carrier injection (electrons and holes are injected from the cathode and anode, respectively); carrier transport (injected electrons and Holes are transported within the polymer layer); recombination of carri...

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): C09K11/06H05B33/14
Inventor 徐良衡高芸姚红兵徐礼玲
Owner SHANGHAI TECHSUN ANTI COUNTERFEITING TECH HLDG
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com