发光基团

It's proposed that it must be significant to introduce the functional groups, such as carbazole, into complexes to explore the solid fluorescence and the electrochemistry properties of the complexes.

在此基础上，将功能性基团咔唑通过羧酸根引入到银、钌配合物中，主要研究了它们的光致发光及电化学性质。

From comparison with poly(2,7-fluorenylene), the 1,2-bis( p -phenylene)-1-cyanovi- nylene unit was found to be a good electron-withdrawing moiety for electronic materials and the incorporation of 1,2-bis( p - phenylene)-1-cyanovinylene resulted in a narrow band gap and a red shift of both the absorption and photoluminescence emission peaks.

通过与聚芴对比，发现对于电致发光材料来说，由于氰基的强吸电子能力使得氰基亚乙烯基成为一个很好的吸电子基团，与之结合使得能隙变窄，吸收和发射光谱发生红移。

In the case of low doping concentration of porphyrins and long interchain distance, the rotational motion of porphyrin molecules is the main reason of fast luminescence decay and low luminescence efficiency.

在卟啉低掺杂浓度和聚合物分子链间距离较大的情况下，卟啉侧链基团的旋转成为影响荧光寿命和发光效率的主要因素。

The spectroscopic and electrochemical studies suggest the energy structure of this class complex can be easily controlled by modification. With the introduction of electron-donating arylamino groups, the obtained complexes show intense and continuous absorption bands in the region of 250-550nm with strong metal-to-ligand charge transfer dπ(Pt →π* transitions (ε~ 2×104 dm3 · mol-1 · cm-1). Complexes involving the construction of D-π-A type systems also display continuous absorption bands in the region of 400-750nm, rising from the overlapping effect of MLCT and LL'CT bands.

其中，芳胺及其二聚体类修饰基团的引入，使其配合物MLCT吸收谱带的摩尔吸光系数增加，并在250～550nm范围内形成了强的连续吸收；具有D-π-A结构的配合物，由于MLCT吸收谱带和LL'CT吸收谱带的协同效应，导致在400～750nm范围内形成连续吸收；得到了从绿光到深红光的磷光发射系列配合物，并采用真空蒸镀的方法获到了外量子效率分别为5.7%和5.0%的橙光和橙红光多层电致发光器件。

Green fluorescent protein is a kind of bioluminescent protein that can emission visible green light when it is excited by ultraviolet or blue light.

绿色荧光蛋白是一种生物发光蛋白，其内源荧光基团在受到紫外光或蓝光激发时可高效发射清晰可见的绿光。

When a strong electron-withdrawing group (e.g., nitrobenzene group) is located on the position 3, the twisted configuration between pyrazoline ring and the substituted phenyl group on the position 3 is the fluorescence emission configuration of this kind of 2-pyrazolines, and the planar configuration between two moieties is also the best non-radiative decay configuration of these compounds.

对于C3位取代基为强的拉电子基团的化合物，C3位取代基与吡唑啉环相扭曲的构象是化合物分子的发光构象，而两者处于同一平面的构象是化合物的最佳非辐射衰变构象，与N1所联取代基的旋转扭曲无关。

It can be proposed that when the substituent is an electron donor, the twisted configuration between pyrazoline ring and the moiety attached on N1 is the fluorescence-emitted configuration of 2-pyrazoline, and the configuration where two moieties are placed in a co-plane is the best non-radiative decay configuration of these compounds.

这表明，对于C3位取代基为推电子基或弱的拉电子基团的化合物，N1所联取代基与吡唑啉环相扭曲的构象是化合物的发光构象，两者处于同一平面的构象是化合物的最佳非辐射衰变构象，与C3所联取代基的旋转扭曲无关。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。