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The results indicate that the PPV oligomer with biphenyl bridge is a cross form between two chains and tortuose derivative in the same chain. It reduces molecular symmetry and weakens %π-π% stacking effect among conjugated molecules in solid. This is perhaps the important factor that light-emitting diodes can increase fluorescence quantum efficiency.

结果表明，联苯桥联后的PPV齐聚物在结构上形成了链间交叉链内扭曲的构象，这种交叉扭曲的构象降低了分子的对称性，减弱了共轭分子在固体中的π-π堆积作用，这可能是减少荧光猝灭效应，提高固体发光器件效率的重要原因。

We adopt a similar discotic liquid crystalline synthesis way to synthesize target molecules 7, 11, 15, 19, 21 in this article. The target molecules have a central triphenylene core and different side chains including triphenylamine derivatives and carbazole molecules. We observe these molecules optical and electrochemical properties and the effect of hole-transport layers in organic light emitting diode.

本篇论文的研究主旨是采用类似盘状液晶的合成方式，以三伸苯作为分子的核心，藉由改变不同的三苯胺及咔唑醚基侧链来合成目标化合物7、11、15、19、21，并观察分子的光学性质变化，电化学行为，以及作为电洞传输材料在有机电激发光元件上的效果。

Extensive studies have been made on organic and polymeric light emitting diodes because of their practical application as well as inherent scientific interest. Polymer LEDs using Poly (p-Phenylene Vinylene) were first reported in 1990 by Friend Research group and since then various other kinds of conjugated polymers have been developed which exhibit electroluminescence.

自从1990年英国剑桥大学Friend研究小组用聚对苯撑乙烯制作发光二极管以来，人们对PPV及其衍生物的电致发光性能进行了广泛研究并且取得了很大进展。

Both the PL and EL of PPV are bluish-green emitting, the molecular weight, luminescenceefficiency and brightness of which are obviously higher than the homo-polymers and thecopolymers consisted of 9, 10-anthracene vinylene reported.

初步研究结果表明，聚2，6-蒽基乙烯膜状态下的荧光发射光谱和电致发光光谱均呈蓝绿光发射，其分子量、发光效率和亮度显著高于已有报道的聚9，10-蒽基乙烯，也明显高于文献报道的9，10-蒽基乙烯与其它单体的共聚物。

In this way until the五更suddenly heard inside the mountain,"哗啦啦"sound, mountains, along the northern slope of dazzling golden light off, light-emitting sisters rushed towards the place back and forth, saw only the hole Well, rough fingers, holes along the inside of view, to see there is a gold table, side table, the rows of neatly steamed them Jinniu size.

就这样等到了五更，忽然听见山里面&哗啦啦&作响，山北坡放出一道耀眼的金光，姐妹俩急忙朝发光的地方跑去，只见那洞眼只有手指头那么粗，顺着洞眼往里看，见到内有一张金方桌，方桌上整齐地摆着一排排馒头大小的金牛。

This instrument consists of three parts: optical emitting and receiving system, signal amplifying and controlling system, and display system.

该系统主要由光学发射与接收系统、信号放大与处理系统和显示系统三部分组成。

A method of arraying self-scanning light-emitting element array chips is provided, in which it is possible to remove defective chips completely.

提供一种可完全除去不良芯片的发光元件阵列芯片的布置方法。

Imagine the new cells all emitting energy - the next step for us is to prepare to access the new energy by attuning to it now.

想象新的细胞全都发射能量-现在对我们来说下一步就是通过与它相合准备接近这新的能量。

Officers in firearms units are constantly subjected to loud noise in training, while public order bobbies may be accustomed to air horns emitting deafening blasts at protests.

佩枪警员经常要在刺耳的噪声中训练，而维持秩序的警察队伍也得在行动中，适应空气喇叭向示威人群发出的那种致聋强声。

Organic light-emitting materials contain organic small molecule materials, polymers and metal chelates.

有机发光材料可分为有机小分子、有机高分子和金属配合物三类。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。