发射光谱

The most parts of thesis as follows:1. Five symmetrical intra-molecular charge transfer oligomeric phenylene vinylene light emitting materials were designed and synthesized using oligomeric phenylene vinylene as a framework.2. The structures of target molecule were characterized by ~1HNMR,~(13)CNMR, IR, MS and element analysis.3. In order to study the influence of the location and numbers of electron-donor and electron-acceptor on their photoelectric performance by changing length of OPV chain, the UV spectra and fluorescence spectra of target compounds has been compared. We have researched into main factors effecting on material emitting red-shift; organic electroluminescence device was prepared using the compound P4. The capability of eletroluminescence was researched.4. The photoelectric properties of P4 was explained by quantum chemical calculation (the Gaussian 98 quantum chemistry program). It is greatly contributed know the whole process of charge transfer to guide the design of red emitters.

本文研究的内容主要包括以下部分：(1)设计并合成5个对称的以齐聚苯乙烯类为骨架的分子内电荷转移型齐聚苯乙烯类发光材料；(2)通过IR，MS，~1H-NMR，~(13)C-NMR和元素分析对所合成的目标化合物进行表征；(3)通过对目标化合物的紫外光谱和荧光光谱比较分析，研究改变OPV的长度，电子给体和电子受体的位置及数量对其光电性能的影响，探讨材料发射红移的主要因素；选取性能良好的目标化合物P4制备成OELD器件，对其电致发光性能进行研究；(4)运用Gaussian98量子化学程序包，采用量子化学方法对目标化合物P4的光电性能从理论加以解释，进一步认识荷移跃迁的整个过程，为红光材料的设计加以指导。

It suggests that the functional group of the Chla in the photosynthesis process is porphyrin.

结果发现这些样品的光谱均与卟啉的光谱相似，在红光波段有较强的发射带，从而表明光合作用过程中Chla的功能团是卟啉环。

The spectral performance of a self-Raman-active material (Nd:SrMoO4 crystal) was investigated. Its stimulated Raman scattering, absorption spectra, luminescence lifetime, and infrared emission under 808 nm LD excitation were measured at room temperature.

通过拉曼散射光谱，吸收光谱，荧光发射寿命和808 nm LD激发下的红外荧光光谱的实验测量，系统研究了Nd3+：SrMoO4晶体的自受激拉曼光谱性质。

The invention chooses single or double color fixing wavelength to respectively project single spectrum, and the plurality of LEDs stable spectrum property project a constant spectrum with the range between 380nm-780nm, further the invention is low in energy-consumption, small in volume, environment-friendly, fast in response speed, long in useful life, fine in stability, and high in accuracy, thereby the invention is a product to take place tungsten halide lamp illuminant.

本发明选用单一或双色固定波长、分别发射出单色光、以及光谱性能稳定的多个LED组合发出光谱范围在380nm～780nm之间连续光谱，能耗低、体积小、环保、响应速度快、寿命长、稳定性好、精密度高，是卤钨灯光源更新换代产品。

The research results indicate that LED integrated photopanel as interior illuminant, which emit monochromic light such as red light(660～680nm)and blue light(430～450nm), not only cover with spectrums absorbed by the plant or algae for photosynthesis, enhance the light energy absorbed by chlorophyll a and the growth of Spirulina platensis, increase greatly microalgal biomass and the its content of photosynthetic pigments; but also decrease enormously the absorption spectrums not need for photosynthesis, save energy at more than 38.75%.

从LED集成光电板的光电特性、光热效应、光衰减性、光辐射特征与植物和藻类光吸收特征的相匹配性及LED辐射单色光对螺旋藻的光合色素含量的影响等几方面，分析研究了LED集成光电板作为光生物反应器内部光源的特性及可行性，研究结果表明，LED集成光电板作为光生物反应器的内部光源，它所发射的单色光谱红光660～680nm、蓝光(430～450nm，不仅能覆盖植物和藻类光合作用所需要吸收的光谱能带，促进叶绿素a对光能的吸收和螺旋藻的生长，增强光合作用，使细胞生物量与光合色素含量显著提高；而且不被吸收的光谱减少，节能达38.75％，无疑它将是光生物反应器潜在最有效的光源。

As a result, dual fluorescence was observed in non-polar solvents. Long-wavelength emission was found to consist of two components:+D||A" exciplexes resulted by "harpooning effect" and +D^^A" exciplexes stablized by solvation.

研究结果表明：合成的化合物在非极性溶剂中有双重荧光的稳态发射行为；双重荧光中的长波长发射经时间分辨光谱研究为双指数发射衰减；其中的长寿命衰减是由于该类化合物在非极性溶剂中激发后经过分子内电荷转移形成了激基复合物所致，而产生该激基复合物的直接原因是由于在非极性溶剂中的&harpooning effect&所致，短寿命则来自于该类化合物激发后在溶液中发生了分子内电荷转移的直接衰减。

Moreover, their optimum excitation wavelength and emission wavelength are studied and chosen. The fluorescent property of carbaryl and metolcarb in different pH was studied, and the working curve was established according to the optimized experiment condition.

研究了农药的分子结构与其自然荧光特性关系，实验研究了这几种农药的激发光谱、荧光光谱特性以及本底溶剂的荧光光谱特性，研究并选择了它们的最佳激发和荧光发射参数，实验研究了不同pH值下西维因、速灭威等农药的荧光特性，测定了农药工作曲线。

The fluorescence spectra of Eu~(3+) may be used to study the structure ofcompounds.The band shift of Nd~(3+) in its absorption spectra,the red-to-orangeintensity ratio of the Eu~(3+) emission(~5D_0→~7F_2)/(~5D_0→~7F_1)and the yellow-to-blue intensity ratio of the Dy~(3+) emission~4F_(9/2→~6H_(13/2)/~4F(9/2→~6H(15/2)intheir fluorescence spectra may be used to study the degree of covalency of theLn-O bond and its relation with the electronegativity of M in Ln-O-M.

本文介绍了利用 Eu~(3+)的荧光光谱研究化合物的结构；利用 Nd~(3+)的吸收光谱的谱带位移和 Eu~(3+)的荧光光谱的红橙发射强度比(~5D_0→~7F_2)/(~5D_0→~7F_1)和 Dy~(3+)的黄兰比~4F_(9/2→~6H_(13/2)/~4F_(9/2→~6H_(15/2)，了解Ln—O—M中 Ln—O 化学键的共价程度以及 M 的电负性对共价程度的关系；利用吸收光谱、荧光光谱和磁化率研究稀土的价态以及利用磁化率研究化合物的组成。

Thermal analysis showed that all of the four polymers have high thermal stability with T_g higher than 200 °C. The absorption spectra of PDOPPF and PDAOPF-PPF showed fine peaks resulting from pyrenes at C9 of the fluorene moiety and PDOFP and PDAOPF-P showed red-shift compared to polyflurenes.

同聚(9，9-二辛基芴)的光谱的相比，聚合物PDOPPF和PDAOPF-PPF的吸收光谱显示出一些精细吸收峰，聚合物PDOFP和PDAOPF-P的吸收光谱有较大红移，因而前两者的固态光谱发射蓝光，而后两者的则为蓝绿光，四个聚合物的薄膜即使经过在氮气气氛中150℃退火24h后光谱也没有明显的变化。

Nanostructured ZnO films with grain size of 28～35 nm have been prepared on quartz glass substrates by pulse laser ablation of Zn target in oxygen atmosphere. The structural and optical properties of the films were studied. ZnO thin films with typical c-axis (002) orientation were successfully deposited at a range of 100～250 ℃. The results obtained by X-ray diffraction and photoluminescence measurements show that the strong UV emission centering is about 378～385 nm and deep-level emission centering about 518～558 nm in the room temperature PL spectra of the ZnO films.

利用脉冲激光沉积法在氧气氛中烧蚀锌靶制备了纳米晶氧化锌薄膜，衬底为石英玻璃，晶粒尺寸约为28～35 nm.X射线衍射结果和光致发光光谱的测量表明，当衬底温度在100～250 ℃范围内时，所获得的ZnO薄膜具有c轴的择优取向，所有样品的强紫外发射中心均在378～385 nm范围内，深能级发射中心约518～558 nm，衬底温度为200 ℃时，得到了单一的紫外光发射。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。