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随着液晶显示技术的迅速发展，TFT-LCD已称为液晶显示的主流，但是视频中的动画残影、拖尾等问题依然没有解决，造成这一现象的主要原因是液晶响应速度慢。液晶材料的黏度直接决定了液晶显示器的响应速度。向列相液晶的低温黏度很大，使得响应速度很慢，制约了液晶显示器的性能和使用范围。因此，开发具有低黏度的液晶材料，受到人们广泛的重视。 二氟亚甲氧基类液晶是20 世纪80 年代末期开发出的一类含氟液晶化合物，该官能团的引入，大幅度降低了黏度，缩短液晶的响应时间，对改善液晶低温显示性能非常有益，是近年来所发现的综合性能最突出的液晶化合物之一。 本文共设计合成了合成出了nPTPdFOPF、nPTPdFOGF和nUPdFOPF三个系列共11个二氟亚甲氧基类液晶化合物，均为见文献报道。化合物经过1HNMR、13CNMR、19FNMR、MS、IR谱图表征和元素分析，确认了化合物结构。通过差示扫描量热仪(DSC)测量了相变温度，表明都有明显的液晶性质，且相态都比较宽，随着侧位氟原子的引入，熔点和清亮点都有明显降低。通过AR500液体流变仪测量了化合物黏度随温度温度的变化曲线，其结果表明二氟亚甲氧基类液晶化合物低温黏度非常小，低温黏度对温度的依赖性很小，综合性能十分优异。 |
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wshbinzhang
铁杆木虫 (知名作家)
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随着液晶显示技术的迅速发展，TFT-LCD已称为液晶显示的主流，但是视频中的动画残影、拖尾等问题依然没有解决，造成这一现象的主要原因是液晶响应速度慢。 With the rapid development of LCD technology, TFT-LCD has become the mainstream in liquid crystal displays, but the problems of video animation blur, streaking, etc. remain unresolved, which is due to the slow response speed of LCDs. 液晶材料的黏度直接决定了液晶显示器的响应速度。 The viscosity of liquid crystal material directly determines the response speed of LCDs. 向列相液晶的低温黏度很大，使得响应速度很慢，制约了液晶显示器的性能和使用范围。 The viscosity of nematic liquid crystal is very high at low temperatures, resulting in the slow response speed and restricting the performance and application of LCDs. 因此，开发具有低黏度的液晶材料，受到人们广泛的重视。 Therefore, it has been attracted great attention for developing new liquid crystal materials with low viscosity. |
2楼2011-05-28 07:04:28
wshbinzhang
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zww8623(金币+100, 翻译EPI+1): 太及时了 很不错 大哥还有一段啊 您继续啊 谢谢了 2011-05-28 07:35:20
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二氟亚甲氧基类液晶是20 世纪80 年代末期开发出的一类含氟液晶化合物，该官能团的引入，大幅度降低了黏度，缩短液晶的响应时间，对改善液晶低温显示性能非常有益，是近年来所发现的综合性能最突出的液晶化合物之一。 Difluoro sub methoxy is a class of fluorinated liquid crystal compounds developed in 1980s. The introduction of fluorinated functional groups can significantly reduce the viscosity and the response time of LCDs, which is of benefit to low-temperature performance of LCDs. Therefore, difluoro sub methoxy is one of the most prominent compounds found in recent years with the salient overall performance |
3楼2011-05-28 07:17:20
wshbinzhang
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★ ★ ★
zww8623(金币+50): 谢谢了 2011-05-28 07:55:48
Mally89(金币+3): 感谢应助！~欢迎常来！~ 2011-05-28 20:03:28
zww8623(金币+50): 谢谢了 2011-05-28 07:55:48
Mally89(金币+3): 感谢应助！~欢迎常来！~ 2011-05-28 20:03:28
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本文共设计合成了合成出了nPTPdFOPF、nPTPdFOGF和nUPdFOPF三个系列共11个二氟亚甲氧基类液晶化合物，均为见文献报道。 Three series of nPTPdFOPF, nPTPdFOGF and nUPdFOPF including 11 difluoro sub methoxy liquid crystal compounds were successfully designed and synthesized in this research, which could be found in Ref. 1-10. 化合物经过1HNMR、13CNMR、19FNMR、MS、IR谱图表征和元素分析，确认了化合物结构。 The structure of these as-synthesized compounds are identified and confirmed through the spectra characterization and elemental analysis of 1HNMR, 13CNMR, 19FNMR, MS, IR. 通过差示扫描量热仪(DSC)测量了相变温度，表明都有明显的液晶性质，且相态都比较宽，随着侧位氟原子的引入，熔点和清亮点都有明显降低。 The results of phase transition temperature measurement by differential scanning calorimetry (DSC) show the obvious liquid crystal properties of these as-synthesized compounds with wide range of liquid phases. The introduction of lateral fluorine atoms significantly reduces the melting and clearing points. 通过AR500液体流变仪测量了化合物黏度随温度温度的变化曲线，其结果表明二氟亚甲氧基类液晶化合物低温黏度非常小，低温黏度对温度的依赖性很小，综合性能十分优异。 The dependence of viscosity with temperature measured by AR500 liquid rheometer shows excellent overall performance because the viscosity of fluoride sub-methoxy liquid crystal compounds is very small at low temperatures and the viscosity is dependent of temperature. |
4楼2011-05-28 07:34:55
liqi9673
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zww8623(金币+150): 很好啊 谢谢 2011-05-28 07:55:35
Mally89: 感谢应助！~欢迎常来！~ 2011-05-28 20:03:33
Mally89: 感谢应助！~欢迎常来！~ 2011-05-28 20:03:33
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With the rapid development of liquid crystal display technology,TFT-LCD has been called the mainstream of liquid crystal display (LCD),but the problems as the animation remnants of video and trailing still are not solved , the main reason caused by this phenomenon is the speed of response of LCD is slow.The viscosity of liquid crystal material directly determines the response speed of LCD.The column phase liquid crystal viscosity is great in low temperature , making the response speed greatly slow, restricting the LCD monitor the performance and the application scope.Therefore, the development of liquid crystal materials with low viscosity receives people's attention. Two fluorine sub-methoxy LCD is developed a kind of containing fluorine liquid crystal compounds in the late 1980s,the introduction of the functional groups, reduced the viscosity, shorten the response time, improving liquid crystal display performance in low temprature is very beneficial, is one of the most outstanding for the comprehensive performance of the liquid crystal compounds in recent years. The paper has designed and synthesized nPTPdFOPF, nPTPdFOGF and a nUPdFOPF three series which are total 11 two fluorine sub-methoxy classes of LCD compounds, are reported in the literature.Through 1HNMR, 13CNMR, 19FNMR, MS, IR spectra characterizing and elemental analysis compound structure is confirmed .By (DSC) measuring the phase-change temperatures, shows that there are obviously LCD properties and morphology is wide, with the introduction of fluorine atoms lateral status, melting point and clearing point have significantly reduced.Through the AR500 liquid rheometry measuring temperature curve of compounds viscosity changing with temperature , and the results show that the viscosity of two fluorine sub-methoxy class liquid crystal compounds, is very tiny in low temperature,low viscosity is tiny to the dependence on temperature, comprehensive performance is very excellent. |
5楼2011-05-28 07:36:27
