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Vinyl polymer main body material with electron donor-acceptor structure and preparation and application methods therefor

A technology of main material and specific structure, which is applied in chemical instruments and methods, compounds of group 5/15 elements of the periodic table, luminescent materials, etc., can solve problems such as energy loss, and achieve excellent thermodynamic and morphological stability effects

Inactive Publication Date: 2016-10-26
NANJING UNIV OF TECH
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Problems solved by technology

The recombination radiative transition of singlet excitons emits fluorescence, and the radiative transition of triplet excitons emits phosphorescence. If only relying on fluorescence emission, organic molecules can only achieve a maximum internal quantum efficiency of 25%, while 75% of triplet excitons pass concentration quenching. off or triplet-triplet (T 1 -T 1 ) annihilation causing energy loss

Method used

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  • Vinyl polymer main body material with electron donor-acceptor structure and preparation and application methods therefor
  • Vinyl polymer main body material with electron donor-acceptor structure and preparation and application methods therefor
  • Vinyl polymer main body material with electron donor-acceptor structure and preparation and application methods therefor

Examples

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example 1

[0040] Example 1: Synthesis of polymer material PTPACzPO precursor compound

[0041] Compound 3, the synthesis of 6-dibromocarbazole (2):

[0042] Under ice-water bath conditions, a solution of N-N-dimethylformamide (DMF) (20ml) dissolved with carbazole (10g, 59.8mmol) was added dropwise with a constant pressure dropping funnel to dissolve N-bromosuccinyl imine (21.28g, 120mmol) in DMF (30ml). After the dropwise addition was completed, the ice-water bath was removed, and the reaction was carried out overnight at room temperature and protected from light. Then, the reaction solution was washed with deionized water, and the solid was filtered out after precipitation, and recrystallized with ethanol to obtain product 2. Yield: 47%. 1 H NMR (400MHz, Chloroform-d) δ8.13(d, J=1.9Hz, 3H), 7.52(dd, J=8.6, 1.9Hz, 2H), 7.31(d, J=8.6Hz, 2H). 13 C NMR (75MHz, Chloroform-d) δ129.34, 123.28, 112.22.

[0043] Synthesis of compound 3-(diphenylphosphoryloxy)-6-bromocarbazole (4):

[0044...

example 2

[0065] Example 2: Synthesis of Polymer Material PVPPOK Precursor Compound

[0066] Synthesis of compound 3-bromocarbazole (2):

[0067] Under ice-water bath conditions, a solution of N-N-dimethylformamide (DMF) (20ml) dissolved in N-bromosuccinimide (10.64g, 59.8mol) was added dropwise to the solution with a constant pressure dropping funnel. In a solution of carbazole (10 g, 59.8 mol) in DMF (20 ml). After the dropwise addition was completed, the ice-water bath was removed, and the reaction was carried out overnight at room temperature and protected from light. Then, the reaction liquid was washed with deionized water, and the solid was filtered out after the solid was precipitated, and the product 2 was obtained by recrystallization from ethanol. Yield: 47%. 1 H-NMR (400MHz, CDCl3) δ8.19 (d, J = 1.9Hz, 1H), 8.09 (d, J = 6.9Hz, 1H), 8.05-8.01 (m, 1H), 7.50 (dd, J = 8.6 , 1.9Hz, 1H), 7.46-7.43(m, 2H), 7.31(d, J=8.6Hz, 1H), 7.28-7.22(m, 1H). 13 C-NMR (75MHz, CDC13) δ128.55...

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Abstract

The invention belongs to the field of photoelectric functional materials and particularly relates to a vinyl polymer main body material obtained through functionally modifying PVK (Polyvinyl Carbazole) with an electron donor group and an electron acceptor group separately. On the basis of a series of characterizations of properties of optics, electrics, electrochemistry and the like of a polymer, the polymer is applied to the field of organic luminescence, and a series of efficient luminescent devices are successfully manufactured. Taking polymer main body materials, i.e., PTPACzPO and PVPPOK for example, the polymer main body materials adopt the traditional hole-transport material PVK (Polyvinyl Carbazole) as a skeleton, and charge carrier transport performance better than that of PVK is obtained through a series of molecular modifications.

Description

technical field [0001] The invention belongs to the field of organic electroluminescent materials. It specifically involves some organic chemical reactions such as Suzuki coupling reaction and free radical polymerization of vinyl monomers. By adjusting the internal electron donor and acceptor structure of the polymer host material molecule, the electronic structure of the material is optimized to obtain high-efficiency device luminescence performance. . Background technique [0002] In 1987, the Tang research group of Kodak Company of the United States opened up the research direction of organic light-emitting diodes (OLEDs) based on small-molecule fluorescent materials. In 1990, the research group of Professor Dr. ) (J.H.Burroughes, D.D.C.Bradley, A.R.Brown, R.N.Marks, K.Mackay, R.H.Friend, P.L.Burns, A.B.Holmes, Nature, 1990, 347, 539.). Compared with traditional inorganic semiconductors, the use of organic semiconductors can solve problems such as cost, processing, lumi...

Claims

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Application Information

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IPC IPC(8): C07F9/572C09K11/06H01L51/54H01L51/50H01L51/52H01L51/56
CPCC09K11/06C07F9/5728C09K2211/1466H10K85/141H10K50/14H10K50/171H10K50/816H10K50/11H10K71/00
Inventor 殷成蓉王超李璐徐亚超黄维
Owner NANJING UNIV OF TECH
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