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Europium (III) conjugated organic complex as well as preparation method and application thereof

A technology of organic complexes and complexes, applied in 3/13 organic compounds without C-metal bonds, compounds containing elements of Group 3/13 of the periodic table, organic chemistry, etc., can solve the problem of chromophore aggregation fluorescence , luminous efficiency reduction, quenching and other problems, to achieve high luminous efficiency, high charge carrier mobility, and improve device efficiency

Pending Publication Date: 2022-03-04
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Pyrene is an excellent blue light material, but due to its large planar conjugated structure, it is easy to cause chromophore aggregation and fluorescence quenching, which reduces the luminous efficiency

Method used

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  • Europium (III) conjugated organic complex as well as preparation method and application thereof
  • Europium (III) conjugated organic complex as well as preparation method and application thereof
  • Europium (III) conjugated organic complex as well as preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0036] (1) Synthesis of 3,8-dipyrene-1,10-phenanthroline (PhenPy 2 )Ligand

[0037] Before the experiment: weigh Pd(PPh 3 ) 4 (76mg, 0.06mmol) was dissolved in 10mL of toluene for deoxidation treatment, the container needs to be wrapped in tinfoil to avoid light; 30mL of toluene was deoxidized separately.

[0038] Experimental reaction steps:

[0039] Add Ba(OH) to the reaction flask 2 ·8H 2 O (1.577g, 5mmol), pyrene borate (2.17g, 6.6mmol), 1,10-dibromophenanthroline (1g, 2.95mmol) and magnetons, the device is sealed and vacuumized, and the device is used Wrapped in tinfoil; add the treated Pd(PPh 3 ) 4Solution, toluene 30mL, after the system is completely dissolved, heat and reflux at 110°C for 30h; after the reaction, extract with dichloromethane and water; first use ethyl acetate / petroleum ether with a volume ratio of 1:5 as the eluent on silica gel Small polar impurities were separated by column chromatography, and the product was separated with pyridine / ethyl ace...

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Abstract

The invention belongs to the technical field of photoelectric materials, and relates to a conjugated organic complex of europium (III) and a preparation method and application thereof.A neutral ligand 3, 8-dipyrene-1, 10-phenanthroline (PhenPy2) symmetrically modified by a beta-diketone ligand dibenzoylmethane (DBM) and a pyrene group is matched with europium (III), the europium (III) quaternary complex [Eu (DBM) 3PhenPy2] is synthesized, and the complex is synthesized through the coordination of the neutral ligand 1, 8-dipyrene-1, 10-phenanthroline (PhenPy2) and the neutral ligand 1, 8-dipyrene-1, 10-phenanthroline (PhenPy2) and the neutral ligand 1, 8-dipyrene-1, 10-phenanthroline (PhenPy2). Pyrene groups are introduced into 3 and 8 sites of 1, 10-phenanthroline for modification, so that the space effect is increased, molecular aggregation quenching is inhibited, a large-pi conjugated aromatic ring structure is introduced, the electron cloud density of nitrogen atoms in the ligand is increased, and the carrier transmission capability is improved, so that the fluorescence quantum yield is increased; and a device prepared by doping the material has excellent performance in the aspects of luminous efficiency, chemical stability, carrier mobility and the like.

Description

technical field [0001] The invention belongs to the technical field of photoelectric materials, and in particular relates to a conjugated organic complex of europium (III), a preparation method thereof and an application in the field of organic electroluminescence materials. Background technique [0002] With the rapid development of science and technology in today's era, electronic information has subverted people's way of life. With the advancement of science and technology, people have higher and higher expectations and requirements for information display technology. As early as the 1950s, research on the preparation of electroluminescent devices from organic materials began to emerge. A. Bernanose et al. observed the luminescence phenomenon when a DC voltage of 400V was applied to both sides of the anthracene single wafer. This is the earliest report on organic electroluminescent devices. In 1987, Tang developed for the first time a low driving voltage organic electro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/00C09K11/06H01L51/30H01L51/46H01L51/54
CPCC07F5/003C09K11/06C09K2211/182H10K85/351H10K10/46H10K30/00H10K50/11H10K50/15H10K50/16Y02E10/549
Inventor 唐超李宛玲杨知遥蔡静瑶赖文勇
Owner NANJING UNIV OF POSTS & TELECOMM
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