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

Hyperbranched poly-fluorene material containing space steric hindrance group and manufacture method thereof

A technology of hyperbranched polymerization and steric hindrance, applied in chemical instruments and methods, luminescent materials, semiconductor/solid-state device manufacturing, etc., can solve problems such as limited solubility, achieve the effect of improving spectral thermal stability and inhibiting molecular aggregation

Inactive Publication Date: 2008-08-20
FUDAN UNIV
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For blue light polymers, functional monomers containing spiro ring structures and large aromatic ring monomers have been studied, but they are limited to the exploration of linear polymers; the solubility of the former is limited, and the phenomenon of π-π stacking in the latter is still relatively obvious , the fluorescence spectrum of the film state has a red shift of nearly 20nm compared to the solution state

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
  • Hyperbranched poly-fluorene material containing space steric hindrance group and manufacture method thereof
  • Hyperbranched poly-fluorene material containing space steric hindrance group and manufacture method thereof
  • Hyperbranched poly-fluorene material containing space steric hindrance group and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The intermediates 2,7-dibromo-9,9 dioctylfluorene and 2,7-diboronic acid ester-9,9 dioctyl fluorene were prepared by the following method, and the end-capping agent 2-boronic acid was prepared by a similar method lipid-9,9-dioctylfluorene. 2,7-dibromo-9,9-dioctylfluorene, 2,7-diboronic acid ester-9,9-dioctylfluorene, 1,3,5-m-tribromobenzene and 9,10-dibromoanthracene The molar ratio of 29:43:4:8 is fed, and after Suzuki reaction for 60 to 72 hours, a certain proportion of 2-boronic acid ester-9,9 dioctylfluorene and catalyst tetrakis(triphenylphosphine)palladium (0 ), continue to react, through separation and purification, obtain hyperbranched polymer I, and its reaction scheme is as follows:

[0021]

[0022]

[0023]

[0024]

Embodiment 2

[0026] Prepare intermediate 2,7-dibromo-9,9 dioctyl fluorene, 2,7-diboronic acid ester-9,9 dioctyl fluorene and 2,7-dibromo-spiro( Fluorene-9,9-oxanthene), and a similar method was used to prepare the end-capping agent 2-boronic acid ester-9,9 dioctylfluorene. 2,7-dibromo-9,9-dioctylfluorene, 2,7-diboronic ester-9,9-dioctylfluorene, 1,3,5-m-tribromobenzene and 2,7-dibromo-spiro (Fluorene-9,9-oxanthene) is charged at a molar ratio of 29:43:4:8, and after Suzuki reaction for 60 to 72 hours, a certain proportion of 2-boronic acid ester-9,9 dioctylfluorene and Catalyst four (triphenylphosphine) combined palladium (0), continue to react, through separation and purification, obtain hyperbranched polymer II, its reaction scheme is as follows:

[0027]

[0028]

[0029]

[0030]

[0031]

Embodiment 3

[0033] Prepare intermediate 2,7-dibromo-9,9 dioctyl fluorene and 2,7-diboronic acid ester-9,9 dioctyl fluorene by the following method as in Example 1, and obtain end-capped Agent 2-boronate-9,9 dioctylfluorene. 2,7-dibromo-9,9 dioctylfluorene, 2,7-diboronic acid ester-9,9 dioctyl fluorene, tris(4-bromophenyl)amine and 9,10-dibromoanthracene 13 : 23: 4: 4 molar ratio feeding, after Suzuki reaction for 60 to 72 hours, a certain proportion of 2-boric acid ester-9,9 dioctyl fluorene and catalyst tetrakis (triphenylphosphine) palladium (0) , continue to react, through separation and purification, obtain hyperbranched polymer III, and its reaction scheme is as follows:

[0034]

[0035]

[0036]

[0037]

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 pertains to the technical field of organic and organometalic electro-active material, which more particularly relates to a hyperbranched polyfluorenes material comprising steric blockade and a preparation method thereof. The material introduces high blockade on the basis of hyperbranched polyfluorenes structure to distort considerately the synthesis molecular chain, thus efficiently inhibiting molecular aggregation, avoiding formation of excimer and fluorescence quenching, improving the material with luminous efficiency. As organic electro-active material with high inoxidability, thermal shock resistance and photostability, the material can be widely used in organic electronics industry such as organic / synthesis electroluminescent, photovoltaic cell, organic field-effect transistor and laser etc.

Description

technical field [0001] The invention belongs to the technical field of organic photoelectric functional materials, in particular to a class of hyperbranched polyfluorene materials containing steric hindrance groups and a preparation method thereof, and to the application of such materials in organic / polymer electroluminescence, photovoltaic cells, and organic fields. Applications in the field of organic electronics such as effect tubes and lasers. technical background [0002] Due to their considerable potential applications in large-area flat panel display technology, organic / polymer light-emitting materials have received extensive attention in both academia and industry in recent years. Synthesizing new high-performance luminescent materials is the key to making organic / polymer electroluminescent devices. In the research of red, green and blue primary color polymer luminescent materials, in order to meet the requirements of luminous efficiency, stability and color purity, ...

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): C08G61/00C09K11/06H05B33/14H01L51/00H01L51/30H01L51/46H01L51/54
CPCY02E10/549
Inventor 韦玮覃春杨王洪宇鲁家豹林建明汤多峰
Owner FUDAN UNIV
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