Star-structure organic inorganic hybridization green light material and preparation and application thereof

A star-shaped structure, luminescent material technology, applied in luminescent materials, silicon organic compounds, chemical instruments and methods, etc., can solve the problems of uneven dispersion, separation and purification not reaching the level of small molecules, uneven luminescence, etc. The process is simple, the source of raw materials is convenient, and the reaction speed is fast.

Inactive Publication Date: 2013-06-26
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The stability of small-molecule organic electroluminescent materials is not enough. With the use of the device, molecular aggregation, crystallization or decomposition will occur, resulting in fluorescence quenching and other color coordinate drift, and short service life;
[0005] 2. Although the polymer organic electroluminescent material (PLED) can improve a certain stability, its separation and purification have not yet reached the level of small molecules, resulting in low luminous purity of the material;
[0006] 3. When preparing devices, it is mostly used as a doping object, and the dispersion is uneven, resulting in uneven light emission, etc.
Jesse D.Froehlich et al. (Chem.Mater.2007, 19:4991) reported a multifunctional POSS organic-inorganic hybrid luminescent material, which effectively improved the thermal properties of the material, but the number of luminescent groups added to POSS And the hybrid molecular structure is uncontrollable, the obtained luminescent material is a mixture of different numbers of luminescent groups, the energy transfer between each group is uncontrollable, and as a result, the luminescence purity and luminescence wavelength are difficult to control

Method used

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  • Star-structure organic inorganic hybridization green light material and preparation and application thereof
  • Star-structure organic inorganic hybridization green light material and preparation and application thereof
  • Star-structure organic inorganic hybridization green light material and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Sodium azide POSS (14.58g 10mmol), compound 1 (see reaction formula 1) (45.14g 80mmol) and CuI (0.19glmmol) were added in the there-necked flask, under N 2 DMF10ml was added under atmosphere, and stirred at room temperature for 12 hours. After the initial product was filtered, it was successively washed with CHCl 3 , MeOH, H 2 O, THF, Et 2 O washed and dried under vacuum at 40°C for 12 hours. The molecular formula of the product is: (C 30 SiN 5 OBF 10 h 19 ) 8 Si 8 o 12 , Yield 95%, Luminescence peak wavelength: 661nm.

[0058] Chemical reaction formula 1:

[0059]

Embodiment 2

[0061] Sodium azide POSS and 2-(4-alkynylstyryl)-4-dinitrilemethylene-6-methylpyran hybrid materials

[0062] Sodium azide POSS (14.58g 10mmol), compound 1 (see reaction formula 2) (39.50g 70mmol) and CuI (0.19g1mmol) were added in the there-necked flask, under N 2 10 ml of DMF was added under atmosphere, and after stirring at room temperature for 12 hours, n-hexyne (0.82 g 10 mmol) was added. After the initial product was filtered, it was successively washed with CHCl 3 , MeOH, H 2 O, THF, Et 2 O washed and dried under vacuum at 40°C for 12 hours. The molecular formula of the product is: (C 30 SiN 5 OBF 10 h 19 ) 7 (C 9 SiN 3 Oh 18 ) Si 8 o 12 , Yield 92%, luminescence peak wavelength: 661nm.

[0063] Chemical reaction formula 2:

[0064]

Embodiment 3

[0066] Octavinyl POSS (6.33g 10mmol) and compound 1 (see Reaction Formula 3) (45.78g 80mmol) were dissolved in 50ml DMF, and irradiated by ultraviolet light for 4h. After the initial product was filtered, it was successively washed with CHCl 3 , MeOH, H 2 O, THF, Et 2 O washed and dried under vacuum at 40°C for 12 hours. The molecular formula of the product is: (C 25 SN 2 BF 10 h 10 ) 8 Si 8 o 12 , Yield 99%, Luminescence peak wavelength: 540nm.

[0067] Chemical reaction formula 3:

[0068]

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PUM

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Abstract

The invention relates to a star-structure organic inorganic hybridization green light glowing material and preparation and application thereof. The components thereof comprise: a functional end silsesquioxane POSS core structure part, a single functional end organic green light emitting group part and an end capping organic molecule; wherein, the mol ratio thereof is 1:n:m-n; the preparation includes that the functional end silsesquioxane POSS and the single functional end group green light emitting molecule are used for preparing a controllable star-structure organic inorganic hybridization green light emitting material in mol ratio of 1:n under catalysis of a cuprous salt by adopting click chemistry and the like, wherein, n is equal to 1-14. The green light material is applied to the fields of various displays, optical communication, indoor decoration light sources, three-dimension storage, optical modulation and solar cell and the like. The green light material of the invention hasthe advantages that the structure is easy to precisely control, film forming performance is good; and meanwhile, the preparation technique is simple and environmental-friendly with fast reaction speed.

Description

technical field [0001] The invention belongs to the field of green light-emitting materials and their preparation and application, in particular to a star-shaped organic-inorganic hybrid green light material and its preparation and application. Background technique [0002] The emergence of organic light-emitting devices (Organic Light-Emitting Device, OLED) has brought a huge impact to the display technology. Compared with other display technologies, OLED has significant advantages such as wide viewing angle, low energy consumption, fast response speed, ultra-thin, ultra-light, and easy molding and processing. Extensive attention and in-depth research. [0003] As one of the three primary colors, green light materials have developed rapidly in recent years. For example, Chinese patent CN1381543A discloses an energy-transfer main chain polymer luminescent material, which realizes green light emission by controlling the content of naphthalimide derivatives. Chinese patent ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/06C07F7/21H01L51/54
Inventor 徐洪耀诸亚堃光善仪
Owner DONGHUA UNIV
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