查询词典 pyrazoline

The results indicate that the introduction of bulky groups into the pyrazoline ring increases the glass transition temperature of the compounds and changes the luminescent mechanism of the compounds.

结果表明，在吡唑啉化合物的5位引入稠环取代基提高了吡唑啉化合物的熔点；同时，5位取代基的电位性质还影响着化合物的发光行为。

They are lanthanide-calixarene complexes, calixarene pyrazoline derivatives and calixarene-Schiff-base complexes.

并对它们的光致发光、电致发光及分子结构与发光性能的关系进行了系统研究。

In this thesis, using the pyrazoline derivatives as the model compound, a series of highly monodisperse nanoparticles with controlled size and shape had been prepared.

迄今为止，关于有机超微粒尺寸效应的研究，以及无机纳米晶体研究领域已建物理模型在有机领域的普适性问题都还甚少报道，但唯此我们才有抢占制高点的机会。

Diphenyl-5-pyrenyl-2-pyrazoline shows the emission characteristics of pyrene in solution or the emission characteristics of pyrazoline in films and bulk crystals.

但是，DPP超微粒则表现出了分别出自于芘坏386 nm、吡唑啉环465 nm和分子之间的吡唑啉坏-芘环电荷转移激子570 nm的三重发射，而且各自对应各自的激发光谱，即三重发射的光通道互不干涉。

However, DPP nanoparticles were found to present multiple emission from pyrene at 385 nm, pyrazoline at 465 nm and an intermolecular pyrazoline-pyrene charge-transfer state at 570 nm, and each of them possesses individual optical channel.

在粒径确定时，用一确定波长激发时，发射光谱中不同发射的最大强度直接决定于对应激发光谱在该波长下的强度。另一方面，超微粒粒径的大小同样影响着三个部分的相对强度。随着粒径的增大，吡唑啉环-芘环之间电荷转移态570 nm的荧光发射逐渐消失。

At the same time, the molecular n-n* absorption of nanoparticles were also blue-shifted, accompanied by a hardly changing n-π~* absorption as a result of the reduced overlap of the pyrazoline ringπorbital and a decrease of intermolecular interactions.

增大微粒的尺寸时从S_1态到CT念的荧光发射强度再分布表明，S_1念和CT态互相竞争并同时受纳米超微粒尺寸的影响。2、观察到了球形的1，3-二苯基-5-芘基-2-吡唑啉超微粒由于高度的单分散性而自组织排列成有序的二维阵列。

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。

Formation of exciplexes at the interfaces of the pyrazoline derivatives and BBOT layers were determined by photoluminescence spectral studies on the HTM/BBOT bilayers and HTM∶BBOT mixed evaporated films as well as electroluminescence measurements.

以两种吡唑啉衍生物为空穴传输材料和BBOT为电子传输材料组成双层器件，获得了相对于组成材料的荧光光谱红移和宽化的电致发光。

From the photophysical behaviors of 1, 3, 4-triaryl-2pyrazoline compound (TPP16) at low temperature, it can be considered that the twisted configuration between pyrazoline ring and the non-substituted phenyl group on the position 1 is the fluorescence configuration of conjugated system Ⅰ, and the twisted configuration between pyrazoline ring and P-nitrobenzene group is fluorescence configuration of conjugated system Ⅱ.

研究了1，3，4-三芳基-2-吡唑啉化合物TPP16在低温时的发光情况，发现：在低温77K下，共轭体系Ⅰ(苯基-N1-N2＝C3-苯基)在非极性溶剂中不发荧光，在极性溶剂中有较强荧光发射；而共轭体系Ⅱ(N1-N2＝C3-C4＝对硝基苄叉)在非极性溶剂或极性溶剂中均有荧光发射，表明N1所联取代基与吡唑啉环相扭曲的构象是共轭体系Ⅰ的发光构象，而对硝基苄叉与吡唑啉环相扭曲的构象是共轭体系Ⅱ的发光构象。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新