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

A long-lasting light-storage organic light-emitting material and its preparation method

A luminescent material and light-storage technology, applied in luminescent materials, organic chemistry, chemical instruments and methods, etc., can solve the problems of low luminous brightness of luminescent materials, single color of luminescent materials, weak acid and alkali resistance, etc., and achieve the reaction route Novelty, low preparation cost and short reaction time

Active Publication Date: 2021-09-03
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Sulfide series luminescent materials are luminescent materials with low luminous brightness and short duration, only ten minutes, which cannot meet the applications in many fields
Since the 1990s, people have discovered alkaline earth metal aluminate luminescent materials co-activated by rare earth metals europium and dysprosium, but the luminescent materials have a single color, poor water resistance, and weak acid and alkali resistance.
[0005] The existing long-lasting light-storage organic light-emitting materials with the structure shown in formula (I) contain highly toxic reagents, and the reaction conditions are harsh and the reaction is complicated

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
  • A long-lasting light-storage organic light-emitting material and its preparation method
  • A long-lasting light-storage organic light-emitting material and its preparation method
  • A long-lasting light-storage organic light-emitting material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment is the preparation of 2-(2-methoxyphenyl)-benzopyran-4-one, and the specific preparation steps are as follows:

[0033]

[0034] 1) At room temperature, add 1.0 equivalents of 4-hydroxycoumarin to DCM, slowly add 1.2 equivalents of pyridine during the stirring process, wait until the base is added, stir at a rate of 1000r / min, stir for 1.5h, wait until the temperature Cool down to room temperature, add 2.0 equivalents of 2-iodobenzoyl chloride, and react for 9h. After the reaction was completed, the reaction system was slowly added dropwise to ice water, extracted three times with ethyl acetate, the organic phases were combined, extracted once with dilute hydrochloric acid, distilled water, and saturated saline, dried over anhydrous magnesium sulfate, filtered, and rotary evaporated. The product 3-(2-iodobenzoyl)-4-hydroxycoumarin was washed and purified with a mixture of petroleum ether and absolute ethanol at a volume ratio of 2:1, a white solid wit...

Embodiment 2

[0037] The difference between this example and Example 1 is that the methyl iodide in step 2 is replaced by methyl bromide. After testing, step 1) successfully obtained 3-(2-iodobenzoyl)-4-hydroxycoumarin with a yield of 84%, and step 2) successfully obtained 2-(2-methoxyphenyl)-benzo Pyran-4-one, 76% yield.

Embodiment 3

[0039] The difference between this example and Example 1 is that in step 1), there are 1.0 equivalents of 4-hydroxycoumarin, 2.0 equivalents of pyridine, and 2.0 equivalents of 2-iodobenzoyl chloride. After testing, step 1) successfully obtained 3-(2-iodobenzoyl)-4-hydroxycoumarin with a yield of 78%, and step 2) successfully obtained 2-(2-methoxyphenyl)-benzo Pyran-4-one, 74% yield.

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 relates to the technical field of organic synthesis, in particular to a long-lasting light-storage organic luminescent material and a preparation method thereof. The invention discloses a preparation method of a long-lasting light-storage organic luminescent material having a structure represented by formula (I). The reaction raw materials of the preparation method are cheap and easy to obtain, and the preparation cost is low; the preparation method is simple to operate and has a novel reaction route. The reaction time and synthesis route are short, the reaction conditions are mild, the reaction system is clean, the safety is high, and the long-lasting light-storage organic light-emitting material with the structure shown in formula (I) can be obtained with extremely high yield and selectivity; the preparation method avoids The use of severe high temperature conditions, highly toxic reagents and expensive metal catalysts is avoided, and the preparation method is green and economical; the preparation method is simple in post-processing, with less purification loss, greatly saving manpower, material resources and time, and can adapt to and meet the requirements of industrial production. need.

Description

technical field [0001] The invention relates to the technical field of organic synthesis, in particular to a long-lasting light-storage organic luminescent material and a preparation method thereof. Background technique [0002] Light-storing luminescent materials usually refer to photoluminescent materials, also known as ultra-long afterglow luminescent materials, which absorb and store light energy under light, and release it in the form of light after the light stops. This process can last from several minutes to several Ten hours, is a self-luminous functional luminescent material. Due to its unique performance, it is widely used in scenic spots and office warning signs, architectural decoration, craft ornaments, fire safety, military facilities, aerospace and other fields. [0003] The luminescent color, afterglow duration and afterglow brightness of the light-storage luminescent material products mainly depend on the luminescent material. According to the composition...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C07D311/30C09K11/06
CPCC07D311/30C09K11/06C09K2211/1088
Inventor 孙东伟周永言李丽唐念张曼君
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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