Blue light luminescent material with organic-inorganic hybrid structure, preparation method and application thereof

A technology of hybrid structure and blue light emission, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of uncontrollable number of additions and hybrid molecular structure, uncontrollable energy transfer, difficult control of luminescent purity and luminescent wavelength, etc. , to achieve the effect of convenient source of raw materials, low cost and environmental friendliness

Inactive Publication Date: 2013-04-10
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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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  • Blue light luminescent material with organic-inorganic hybrid structure, preparation method and application thereof
  • Blue light luminescent material with organic-inorganic hybrid structure, preparation method and application thereof
  • Blue light luminescent material with organic-inorganic hybrid structure, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Sodium azide POSS and 2-alkyne-9,9-dibutylfluorene hybrid material

[0060] Sodium azide POSS (14.58g 10mmol), 2-alkyne-9,9-dibutyl fluorene (28.56g 80mmol) and CuI (0.19g1mmol) were added in a three-necked flask, and the 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 26 SiN 3 Oh 34 ) 8 Si 8 o 12 , Yield 95%, Luminescence peak wavelength: 450nm. For the fluorescence spectrum of its THF solution, see the appendix of the instruction manual. figure 1 , the current density-voltage curve, efficiency-voltage, brightness-voltage of the film prepared by spin coating are as follows Figure 2 ~ Figure 4 As shown, the TGA curve is as Figure 5 shown.

[0061]

Embodiment 2

[0063] Sodium azide POSS and 2-(4-alkynylstyrene)-9,9-dibutylfluorene hybrid material

[0064] Sodium azide POSS (14.58g 10mmol), 2-(4-alkynyl styrene)-9,9-dibutyl fluorene (32.37g 80mmol) and CuI (0.19g 1mmol) were added in a three-necked flask, under N 2 DMF10ml was added under atmosphere, and stirred at room temperature for 12 hours.

[0065] The molecular formula of the product is: (C 34 SiN 3 Oh 40 ) 8 Si 8 o 12 , after the initial product was filtered, followed by CHCl 3 , MeOH, H 2 O, THF, Et 2 O washed and dried under vacuum at 40°C for 12 hours. Yield: 95%, luminescence peak wavelength: 460nm.

[0066]

Embodiment 3

[0068] Sodium azide POSS hybridized with 2-alkyne-9,9-dibutylfluorene, n-hexyne-terminated material

[0069] Sodium azide POSS (14.58g 10mmol), 2-alkyne-9,9-dibutyl fluorene (24.99g 70mmol) and CuI (0.19g1mmol) were added in a three-necked flask, and the N 2 Add 10ml of DMF under the atmosphere, stir at room temperature for 12 hours, then add n-hexyne (0.82g 10mmol) to click capping, and continue the reaction for 12 hours.

[0070] The molecular formula of the product is: (C 26 SiN 3 Oh 34 ) 7 (C 9 SiN 3 Oh 18 ) Si 8 o 12 , after the initial product was filtered, followed by CHCl 3 , MeOH, H 2 O, THF, Et 2 O washed and dried under vacuum at 40°C for 12 hours. Yield 94%, luminescence peak wavelength: 450nm.

[0071]

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Abstract

The invention relates to a blue light luminescent material with an organic-inorganic hybrid structure, wherein components of the blue light luminescent material comprise terminal functional polyhedraloligomeric silsesquioxane (POSS) and terminal monofunctional or difunctional luminescent molecules; and the molar ratio of the terminal functional POSS to the terminal monofunctional or difunctionalluminescent molecules is 1: 1-8. A preparation method comprises the steps of: adding the terminal functional POSS and the luminescent molecules according to the molar ratio of 1: 1-8 under the protection of N2, taking CuI as a catalyst, selecting DMF or DMSO as a solvent, controlling the reaction temperature to between 20 and 70 DEG C, reacting for 8 to 24h, filtering the reaction product, using CHCl3, MeOH, H2O, THF and Et2O to wash the reaction product, and performing vacuum drying on the reaction product to obtain the material. The blue light luminescent material is applied in the field ofthe preparation of various displays, optical communication and indoor decoration light sources. The blue light luminescent material can realize the accurate control of the number of organic illuminophores, thereby realizing effectively adjusting luminescent color purity; and preparation technology is simple, has quick reaction speed, and is environment-friendly.

Description

technical field [0001] The invention belongs to the field of blue-light luminescent materials and their preparation and application, in particular to an organic-inorganic hybrid structure blue-light luminescent 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 and ultra-light, and easy molding and processing. It can prepare fully cured thin film devices and realize flexible display. Follow and research deeply. [0003] In order to achieve full-color display in the development of OLED, blue light materials are very important. Not only because it is one of the three primary colors to achieve full-color display, but also because the blue light material has a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/06
Inventor 徐洪耀诸亚堃林乃波光善仪
Owner DONGHUA UNIV
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