发色团的

As for the long-chained guests such as cationic surfactants with different length of alkyl chain added, they can insert into the CD cavity as a spacer to form a ternary inclusion complex with the host molecule.

同时还发现，化学修饰的环糊精所连发色团与CD形成的"自包结"配合物较相同发光分子与非修饰的环糊精形成的包结物具有更强的结合能力。

Since the molecular clip of glycoluril is also an important supramolecular host but few studies have been done in the field of fluorescent chemosensor,we proceeded with some experiments and research in this field as a trial and designed a series of novel fluorescent chemsensors including different three-dimensional cavities by introducing the fluorophores into the receptor.Their recognition and sensing abilities toward various metal ions and neutral guests were studied.

因此，我们(来源：A1dBC论文网www.abclunwen.com)做了一些尝试性的研究，在传统的甘脲主体化合物上引入荧光发色团，设计了一系列新型的、拥有不同立体空腔的荧光分子夹，并研究了它们对各种金属阳离子以及酚类中性客体分子的识别和荧光传感性能。

Tgs are about 573 K for copolyimides based on pyromellitic dianhydride and 533—543 K for those based on 3,3′,4,4′-diphenylethertetra-carboxylic dianhydride and are almost independent of the chromophore loading level.

以刚性相对较大的均苯四甲酸二酐为二酐单体的PPI 的Tg在573 K左右；以二苯醚-3，3′，4，4′-四甲酸二酐为单体的OPI 的Tg在533～543 K之间，且基本与染料发色团含量无关。

Compound Ⅴ-3 has the largest two-photon absorption cross section and strongest two-photon induced fluorescence in these compounds because of its octupolar structure and the delocalized interaction among the chromophores.

由于化合物Ⅴ-3的八偶极分子结构和发色团之间的电子离域相互作用，它在三个化合物中有最大的双光子吸收截面和最强的双光子荧光。

Shape of fluorescence spectrum of diphenylanthracene in multilayer film is almost the same as that in solution, and the position of emission peak does not show apparent shift, which is related to the fact that fluorophore are surrounded by highly branched dendrons. These results provide a new route for design and assembly of luminescent materials.

溶液中的荧光光谱和多层膜的荧光光谱的形状和峰位都非常接近，这和发色团处在树状分子的三维支化结构的中心是直接相关的，这一研究对发光材料的分子设计具有重要的指导意义。

To design a good lanthanide luminescent sensor, a unique combination of features must be realized: high selectivity and recognition to lanthanide ions; presence of multiple absorbing groups suitable for energy-transfer ; high thermodynamic stability and kinetic internees.

一个优良的发光器件必须具备以下几个条件：配体对金属离子有较高的选择识别性能；配体含有共轭发色团有利于能量从配体向中心离子转移；配合物具有相对较高的动力学和热力学稳定性。

As for the long-chained guests such as cationic surfactants with different length of alkyl chain added, they can insert into the CD cavity as a spacer to form a ternary inclusion complex with the host molecule.

同时还发现，化学修饰的环糊精所连发色团与CD形成的&自包结&配合物较相同发光分子与非修饰的环糊精形成的包结物具有更强的结合能力。

In order to develop new DNA probes,we have synthesized two kinds of probes bipyrene ratiometric fluorescence probes and long wavelength Ruthenium polydiimine complex,the following work have been carried out:Fluorescent DNA probes with 1,6-hexanediyl as the linker between two pyrenes, phenylpyrenes or phenylethynyl pyrene fluorophores were synthesized(Py-1,Py-2 and Py-3) and their interactions with DNA were studied by UV-Vis absorption spectra,fluorescence spectra and viscosity measurements.

在前人的基础上，为了更好的识别DNA，本论文设计合成了两类DNA探针——双芘类比率型DNA荧光探针和长波长钌的配合物，具体如下：以己二胺为柔性链，以芘及其衍生物为发色团合成了探针Pyl-3，并通过荧光光谱，荧光紫外吸收光谱和黏度测试研究了探针与DNA的结合方式。

The change of the molecular conformations of Langmuir films at air/water interface is also investigated.

在我们的这些双发色团分子中，常见的偶极—偶极激子相互作用发生的可能性不大。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了