查询词典 phosphorescence

The experimental results showed that strong phosphorescence could be observed in p-cyclodextrin aqueous solution only at low pH value.

实验结果表明，在环糊精水溶液中只有在较低pH时，才能有效抑制分子内的PET过程，使磷光体发射强的磷光，体系的磷光状态为OFF-ON，同时体系包含了AND(β-CD and proton)和NOT(O_2)逻辑功能，可作为一种三输入的INHIBIT逻辑开关。

However, limited work has just been done on studying the phosphorescence mechanism of the sort. So further study on long persistent phosphors is of great importance in theoretical and application fields due to its wide usage and great influence on the future science and technology.

因而长余辉发光材料有着广阔的应用和开发前景，对未来科学技术的发展有一定的影响，但目前人们对该体系材料发光机理等一些重要问题的研究上仍处于探索之中，所以对它的进一步研究开发具有重要的科学意义和实际意义。

However, enhanced phosphorescence shows no clear correlation with the stability constants of ternary complexes and the type of the surfactants.

但三元包络物的表观稳定常数和表面活性剂类型与体系磷光强弱不呈相关关系。

Besides, we also studied room temperature phosphorescence properties of two important fluorescent probes for biomacromolecules, ANS and TNS.

此外，首次研究了生物大分子的重要荧光探针ANS与TNS产生室温磷光的条件与性质；首次以衍生室温磷光法测定了运动违禁药物和毒品。

It is possible that magnetic field suppresses the phosphorescence quenching of triplet oxygen molecules and/or promotes the efficiency of S-T intersystem crossing through Tl〓.

可能是磁场具有一定抑氧作用，同时，磁场有可能通过Tl〓间接与胶束中激发态的N分子作用，提高N分子的S-T系间跨越效率。

We found out one kind of new orange-red long afterglow material La2O2S: Eu3+, Mg, Zr.2 In the phosphor Gd2O2S, Mg, Ti which was prepared by high-temperature solid-state method, the orange afterglow phenomenon can be seen after illuminated with UV light.3 Using the high-temperature solid-state method, Gadolinium oxysulfide phosphors doped with rare earth ions were synthesized. We can observe the red or orange phosphorescence in Gd2O2S doped with Eu3+, Sm3+, Tm3+, Yb3+, Dy3+, Er3+, Nd3+or Ho3+. This is a new result of the long afterglow phosphors research.4 Using the microwave radiation method, the new Sm3+ doped gadolinium oxysulfide phosphor, which has the orange-red long afterglow emission after illuminated with UV light or visible light, was synthesized for the first time.5 In fluorescent materials YOX doped with europium ions, the long afterglow phenomenon wasnt observed but the blue luminescence of Eu2+ and red luminescence of Eu3+ are simultaneously examined. This is a new result of the valence stability and change of Eu2+ in yttrium oxyhalide .We systematically studied the effects of the host, addition agents and reaction atmosphere on the valence change and fluorescence property of europium ions.

经过系统的研究总结得到以下的结论与成果： 1采用高温固相反应法合成了一系列稀土离子掺杂的硫氧化镧发光粉，发现了该体系中Eu~(3+)的长余辉发光，从而得到一种迄今未见文献报道的红色长余辉发光材料：La_2O_2S：Eu~(3+)，Mg，Zr； 2在Gd_2O_2S，Mg，Ti磷光粉中观察到橙色的长余辉发光现象； 3采用高温固相反应法合成了一系列稀土离子掺杂的硫氧化钆磷光粉，在掺杂Eu~(3+)、Sm~(3+)、Tm~(3+)、Yb~(3+)、Dy~(3+)、Er~(3+)、Nd~(3+)、Ho~(3+)的Gd_2O_2S中观察到红色和橙色长余辉发光； 4首次采用微波法合成了Gd_2O_2S：Sm~(3+)，Mg，Ti磷光粉，该磷光粉经紫外或可见光激发后呈现明显的橙红色长余辉发光； 5在YOX中同时观察到Eu~(2+)和Eu~(3+)的发射，系统研究了基质、添加剂及反应气氛对Eu价态和发光的影响。

In particular, compared with conventional fluorophores, the long-lasting phosphorescence nanotubes have a broad and continuous excitaion spectrum and are photochemically stable, which can be used as fluorescent probes in biological staining and diagnostics.

对于纳米结构的长余辉材料来说，它们在纳米器件的标记和显示上具有较大的应用前景。特别是对于纳米管状结构的长余辉来说，它们具有宽的连续发射带和光化学稳定性，使得它们在生物着色和诊断上可以用做荧光探针。

Herein, a series of compounds, BP-C〓-NBD (n=2, 3, 4, 5, 6, 8, 10), was synthesized. Nanosecond flash photolysis, phosphorescence emission and lifetime, as well as photoisomerization reaction of norbornadiene were used to understand the intramolecular triplet energy transfer in detail.

我们设计、合成了以多亚甲基连接的二苯酮与降冰片二烯（BP-C〓-NBD，n=2，3，4，5，6，8，10）系列化合物，利用纳秒时间分辨技术、低温磷光发射、磷光寿命以及光敏异构化的方法，对其分子内三重态能量传递过程进行了详细地研究。

The result indicated that not only the purity of silica materials was important to luminescence of phosphor but also the finestiny, magnesium materials were not so important only when they were A.R. degree. Doping of Gd3+ helped to enhance the long-lasting phosphorescence of phosphor .

掺加Gd~(3+)离子有助于发光材料余辉性能的提高，并且当Gd~(3+)/ Dy~(3+)=3 ： 2时，亮度较不添加Gd~(3+)的Sr_2MgSi_2O_7： Eu~(2+)，Dy~(3+)有大辐提高，这是由于Eu~(2+)与Gd~(3+)之间存在能量传递作用。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。