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Diacetylene-containing poly-siloxane and method for preparing same

A butadiynyl polysilazane and phenyl technology, which is applied in the field of conjugated polymers and its preparation, can solve the problems of difficult processing, poor solubility, high rigidity, etc., achieve excellent performance, increase ceramic yield, and produce high rate effect

Active Publication Date: 2008-08-06
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of polymer is mainly used in optoelectronic materials and semiconductor materials, but it has the disadvantages of high rigidity, poor solubility and difficult processing.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1, preparation of butadiynyl-containing polysilazane (R, R' in formula I are methyl, m, n are 1.4, 4.0)

[0019] In a 250ml three-necked flask, add 50ml tetrahydrofuran, and 20ml n-BuLi (2.5mol / L), under N 2 Under the protection of air, slowly drop the mixed solution of 50ml tetrahydrofuran and 2.0ml hexachlorobutadiene into the three-necked flask at -78°C. After the dropwise addition, keep the temperature at low temperature and continue to stir for 2 hours, then gradually raise the temperature to 20° C. and continue to stir for 10 hours to obtain an off-white turbid butadiynyl dilithium salt solution.

[0020] Add 100ml tetrahydrofuran and 0.125mol Me 2 SiCl 2 , use a low temperature bath to keep the system at -5°C, N 2 Slowly drop the turbid solution of butadiynyl dilithium salt under protection. After the dropwise addition, continue to stir at -5°C for 2 hours, raise the system to 20°C and continue to stir for 10 hours. Leave to stand and separate layers. ...

Embodiment 2

[0034] Example 2, preparation of butadiynyl-containing polysilazane (R, R' in formula I are phenyl, methyl respectively, m, n are 2.3, 2.7)

[0035] In a 250ml three-necked flask, add 50ml of toluene, and 20ml of n-BuLi (2.5mol / L), in N 2 Under air protection, a mixed solution of 50 ml of toluene and 2.0 ml of hexachlorobutadiene was slowly dropped into the three-necked flask at -40°C. After the dropwise addition, keep the temperature at low temperature and continue to stir for 2 hours, then gradually raise the temperature to 20° C. and continue to stir for 10 hours to obtain an off-white turbid butadiynyl dilithium salt solution.

[0036] Add 100ml toluene and 0.125mol MePhSiCl to a 500ml three-necked flask 2 ,, keep the system at -70°C with a low temperature bath, N 2 Slowly drop the turbid diacetylenyl dilithium salt solution under protection. After the dropwise addition, stir and react at -70°C for 10 hours, raise the system to 0°C and continue to stir for 36 hours. Leav...

Embodiment 3

[0050] Example 3, preparation of butadiynyl-containing polysilazane (R, R' in formula I are phenyl, m, n are 4.9, 1.6)

[0051] In a 250ml three-necked flask, add 50ml of ether and 20ml of n-BuLi (2.5mol / L), under N 2 Under the protection of air, slowly drop the mixed solution of 50ml tetrahydrofuran and 2.0ml hexachlorobutadiene into the three-necked flask at -78°C. After the dropwise addition, keep the temperature at low temperature and continue to stir for 2 hours, then gradually raise the temperature to -10°C and continue to stir for 20 hours to obtain an off-white turbid butadiynyl dilithium salt solution.

[0052] Add 100ml tetrahydrofuran and 0.125mol Ph 2 SiCl 2 , use a low temperature bath to keep the system at -5°C, N 2 Slowly drop the turbid solution of dilithium dilithium salt under protection. After the dropwise addition, stir and react at -5°C for 2 hours, raise the system to 100°C and continue to stir for 3 hours. Leave to stand and separate layers. The upper...

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PUM

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Abstract

The invention discloses a polysilazane with butadiene and preparing method, wherein the structural formula is as I displayed; R and R' is H; the carbon atom number of aromatic radical is 1-6 alkyl or alkylene; n is integral from 1 to 20; m is integral from 1 to 100. The invention possesses excellent heat stability and conductivity, which can be ceramic priority, conductive and luminous material.

Description

technical field [0001] The invention relates to a conjugated polymer and a preparation method thereof, in particular to a butadiynyl-containing polysilazane and a preparation method thereof. Background technique [0002] Conjugated polymers have some special properties due to their unique electronic structure conjugated large Π system, especially with unique optoelectronic properties, which can be made into large-area flat-panel displays and light-emitting diodes, conductive coatings, chemical and biological sensors , nonlinear optical materials, luminescent materials and batteries, etc. Since the first report of light-emitting diodes based on polystyrene in 1990, electroluminescent materials based on organic polymers have attracted great attention (Burroughes, J.H.; Bradley, D.D.C.; Brown, A.R.; Marks, R.N.; Mackay, K.; Friend, R.H.; Burns, P.L.; Holmes, A.B. Nature 1990, 34, 539.). At present, polymers whose conjugated main chains are all carbon structures have been wide...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/62
Inventor 颜梅张志杰谭永霞谢择民
Owner INST OF CHEM CHINESE ACAD OF SCI