Anionic rare earth complex and hydrotalcite composite luminescent ultra slim membrane and preparation method thereof

A rare earth complex and anionic technology, applied in the field of rare earth complex [RE3bath] and hydrotalcite composite luminescent ultra-thin film and its preparation, to achieve the effect of reducing fluorescence quenching and luminescence red shift

Inactive Publication Date: 2014-03-19
BEIJING UNIV OF CHEM TECH
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitation of the assembly force, the research on the assembly of hydrotalcite nanosheets and ...

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
  • Anionic rare earth complex and hydrotalcite composite luminescent ultra slim membrane and preparation method thereof
  • Anionic rare earth complex and hydrotalcite composite luminescent ultra slim membrane and preparation method thereof
  • Anionic rare earth complex and hydrotalcite composite luminescent ultra slim membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1. Anionic rare earth complexes [Eu(DBM) 3 bath] preparation:

[0032]Weigh 1mmol of europium chloride, 3mmol of the first ligand dibenzoylmethane (DBM), 1mmol of the second ligand hydrated sodium phenanthroline disulfonate (bath), and dissolve these three substances in 10mL deionized water, 20 mL of absolute ethanol, and 10 mL of deionized water. After adding the first ligand to the rare earth chloride solution, add NaOH solution dropwise to adjust the pH to 6-7, and finally add the second ligand under constant stirring in a water bath at 60°C, a light yellow precipitate will form, continue After stirring for 60 min, it was cooled to room temperature. Transfer to a centrifuge tube, centrifuge at 9000r / min for 5min, remove the liquid part, wash with deionized water, and centrifuge again. Repeat this process three times. The obtained solid part was dried at a temperature of 65° C. for use.

[0033] 2. Preparation of nitrate hydrotalcite precursor by ion exchange met...

Embodiment 2

[0042] 1. Anionic rare earth complex [Tb(DBM) 3 bath] preparation:

[0043] Weigh 1 mmol of terbium chloride, 3 mmol of the first ligand dibenzoylmethane (DBM), and 1 mmol of the second ligand hydrated bathophenanthroline disulfonate (bath), and dissolve these three substances in 10 mL of deionized water, 20 mL of absolute ethanol, and 10 mL of deionized water. After adding the first ligand to the rare earth chloride solution, add NaOH solution dropwise to adjust the pH to 6-7, and finally add the second ligand under constant stirring in a water bath at 78°C, a white precipitate will form, continue stirring After 120 min, cool to room temperature. Transfer to a centrifuge tube, centrifuge at 9000r / min for 5min, remove the liquid part, wash with deionized water, and centrifuge again. Repeat this process three times. The obtained solid was dried at a temperature of 65° C. for use.

[0044] 2. Preparation of nitrate hydrotalcite precursor by ion exchange method:

[0045] a....

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 synthesis of anionic rare earth complex [RE(III) (DBM) 3bath] (wherein, RE is Eu, Tb, Dy and other rare earth ions; DBM (dibenzoylmethane) is a first ligand; bath (bathophenanthrolinedisulfonic acid disodium salt trihydrate) is a second ligand) which belongs to the field of luminescent material and hydrotalcite composite luminescent ultra slim membrane and preparation method thereof. The concrete steps are as follows: preparing an anionic rare earth organic complex; preparing a hydrotalcite colloidal solution; preparing a rare earth organic complex aqueous solution; assembling substrates after hydrophilic treatment in two solutions alternatively. The invention employs rigid structure of the hydrotalcite layer plate and confinement effect of two dimension space, thereby realizing immobilization of rare earth complex and ordered arrangement on molecule scale, improving homogeneity and continuity of rare earth complex membrane, and reducing fluorescence quenching generated by molecular aggregation between complexes; the membrane preparation process is easy to operate, and accurate controls of luminous intensity of the rare earth complex in the membrane and the membrane thickness can be realized by changing assembling frequencies.

Description

technical field [0001] The invention belongs to the technical field of composite luminescent materials, and in particular provides a rare earth complex [RE(DBM) 3 bath] and hydrotalcite composite luminescent ultra-thin film and its preparation method. Background technique [0002] In recent years, rare earth organic complexes have been greatly developed, and a group of functional rare earth complex materials with superior performance has greatly promoted the progress of rare earth chemistry and rare earth material science. The excited ligand of the rare earth organic complex transfers the excited energy to the central rare earth ion through non-radiative intramolecular energy transfer, so that the rare earth organic complex emits the characteristic fluorescence of rare earth elements. Rare earth organic complexes have the advantages of high luminous efficiency of rare earth ions, high color purity, low excitation energy required by organic ligands, high absorption efficienc...

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): C09K11/06C07F5/00
Inventor 闫东鹏赵敏君高瑞方晓雨黄晓斌卫敏
Owner BEIJING UNIV OF CHEM TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap