苯乙炔 meaning in Chinese
phenylacetylene
Examples
- Preparation and photoelectric properties of poly 2 , 5 - dibutyloxy - 1 , 4 - phenylene vinylene
对苯乙炔的制备及其光电性能 - Synthesis and mesomorphic properties of tetrafluorotolane - based liquid crystals with fluorinated polar end - groups
含氟极性端基取代的四氟二苯乙炔类液晶的合成与相变性质 - After introducing the background and the trend of research on ppv thin film light - emitting diodes ( leds ) and the structure of ppv device and its characterizes , the theoretical model of the leds * light - emitting efficiency was presented . based on this model , the formula of light - emitting efficiency was deduced to be : the injecting - currents and the recombining - efficiencies were calculated nwnerically , we found the calculated results agreed very well with the experimental results under the electric field from 0 . 5 x 106 to 1 . 5 x 106v / cm , the numeral calculations and theoretical analyzes of the light - emitting efficiency were done . the conclusions were as follows : ( 1 ) the basic mechanism of the injection transportation and recombination of the carriers which were presented in this paper were proved to be right ; ( 2 ) the electroluminescence in ppv thin film is the result of exciton recombination , the light - emitting efficiency was affected by many factors
本文主要研究聚对苯乙炔（ ppv ）薄膜发光二极管发光效率及主要影响因素，简单地介绍了ppv薄膜发光二极管的研究背景及发展趋势、 ppv器件的结构和性质后，提出了一个计算器件发光效率理论模型，利用这个理论模型得出了发光效率公式的表达式：并对注入电流、复合效率等进行了数值计算，通过合理地选择计算参数，发现计算值在场强为0 . 5 10 ~ 6 1 . 5 10 ~ 6v / cm的范围内与实验结果较好地符合，在此基础上，对发光效率进行了数值计算和理论分析，结果表明：计算结果与理论研究结果相符较好，得出结论如下： （ 1 ）本文的理论推导正确地反映了器件中载流子的注入、传输和复合等基本机制； （ 2 ） ppv薄膜中的电致发光是激子复合的结果，发光效率受多种因素影响。 - Abstract : polyphenylacetylenes were synthesized by rn ( nbd ) cl 2 and wcl6 / ph4sn catalyst systems in n2 at room temperature . polymers with high yield and high molecular weight were obtained . their structures were characterized by uv , ir , nmr and gpc , respectively . the fluorescence of the polymer solution with different concentration was investigated using variable excitation wavelength from uv to visible region . the relation between fluorescence and polymer structure was studied . the results showed that the molecular chain structure has great influence on fluorescence of the polymers . the emitting peak wavelength of fluorescence for the polymer of high stereoregularity is independent of solution concentration and excitation wavelength . the emitting peak wavelength of fluorescence for the polymer with disordered molecular chain arrangement varies with changing the solution concentration and excitation wavelength , and different emission sites in molecular chains and low emitting yield are shown . the measurement and analysis of fluorescence spectroscopy of polyphenylacetylenes may provide some useful information to judge the molecular chain arrangement in some conjugated polymers
文摘:使用有机金属铑、金属钨/四苯基锡催化剂体系聚合苯乙炔，分别获得了高产率和高分子量的聚苯乙炔.使用uv ， ir ， nmr ， gpc等分别对聚合物结构进行了表征.采用不同波长的激发光对聚合物荧光性能进行研究，详细分析了聚合物结构与荧光性能之间的关系.研究结果发现，不同聚合物结构对聚合物荧光性能产生很大影响，规整性高的聚合物，将有较高的发光量子效率；聚合物规整性差，将可能导致多个荧光发光结构点，其荧光强度降低.聚合物荧光光谱研究将对某些共轭聚合物结构的规整性分析提供一些有用的信息