Platinum complex with aggregation-induced emission and preparation method and application thereof
A technology of aggregation-induced luminescence and platinum complexes, which is applied in the direction of platinum-based organic compounds, platinum-group organic compounds, and luminescent materials, and can solve problems affecting the application of transition metal complexes, the reduction of luminous intensity of complexes, and adverse effects on material properties. , to achieve good commercial application prospects, low production costs, and simple equipment
Pending Publication Date: 2020-03-31
GUANGDONG UNIV OF TECH
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Problems solved by technology
Transition metal complexes have been deeply studied as materials for the light-emitting layer of OLEDs, but there are defects: the luminous intensity of the complexes decreases with the increase of the concentration of the solution, and the luminescence in the aggregated state is quenched, which seriously affects the transition metal complexes. Application of complexes in luminescent materials
However, the long excited state lifetime (53μs) of the complex has adverse effects on the performance of the material due to the saturation of the active state emitter in the active layer.
In addition, the production of porphyrins requires complex synthetic processes, which are difficult to scale up for industrial applications.
Method used
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Embodiment 1
[0049] Example 1 Preparation of Schiff base ligands and platinum complexes
[0050] 1, the preparation method of intermediate product 4-(1,2,2-triphenylvinyl)phenol, comprises the following steps:
[0051] Add triphenylbromoethylene and 4-hydroxyphenylboronic acid (molar ratio: 1:1.2), sodium carbonate (5 equivalents), and tetrakistriphenylphosphopalladium into degassed toluene, and heat up and reflux for 24 hours under nitrogen protection; the reaction ends After cooling to room temperature, hydrochloric acid was added, the solvent was removed under reduced pressure after extraction, and a white solid was obtained after column chromatography, the yield: 71.7%; 1 H NMR (400MHz, DMSO) δ9.39(d, J=10.4Hz, 1H), 7.17(m, 9H), 7.00(m, 5H), 6.80(m, 3H), 6.55(d, J=8.6Hz ,2H).
[0052] Its reaction equation is:
[0053]
[0054] 2. The preparation method of the intermediate product 2-hydroxyl-5-(1,2,2-triphenylethenyl), comprising the following steps:
[0055]Dissolve 4-(1,2,2-tr...
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The invention belongs to the technical field of organic metal complexes, and discloses a platinum complex with aggregation-induced emission and a preparation method and application of the platinum complex. The complex is obtained by subjecting metal platinum used as a center to coordination with a tetradentate Schiff base ligand; and the structural formula of the complex is as shown in a formula (I) which is described in the specification. The synthesis process of the complex is simple and is mild in conditions, and the structural general formula of the complex is as shown in the formula (I).The light emitting wavelength of the complex is located in a red light region (620-760 nm), and the complex has an aggregation-induced effect and good thermal stability and is expected to be assembledinto a single-layer light emitting device. Besides, the synthesis process is simple, production cost is low, large-scale production can be realized, and the complex has good commercial application value and broad development prospects in the application aspects such as preparation of luminescent materials or luminescent devices.
Description
technical field [0001] The invention belongs to the technical field of organometallic complexes, in particular to a platinum complex with aggregation-induced luminescence, a preparation method and application thereof. Background technique [0002] In recent years, organic electroluminescent devices (OLEDs) have been widely used in many aspects of life. They are regarded as self-illuminating, high visibility and brightness, high power saving efficiency, light weight, thin thickness, simple structure and low cost. It is one of the most promising products of the 21st century. Transition metal complexes have been deeply studied as materials for the light-emitting layer of OLEDs, but there are defects: the luminous intensity of the complexes decreases with the increase of the concentration of the solution, and the luminescence in the aggregated state is quenched, which seriously affects the transition metal complexes. Application of complexes in luminescent materials. [0003] ...
Claims
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IPC IPC(8): C07F15/00C09K11/06H01L51/50H01L51/54
CPCC07F15/0086C09K11/06C09K2211/185H10K85/346H10K50/11
Inventor 霍延平徐建兴梁亮籍少敏陈豪登
Owner GUANGDONG UNIV OF TECH