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变温荧光
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  “变温荧光”译为未确定词的双语例句
     Measurement of fluorescent characteristics at varying temperature with WG-8A grating spectrometer
     在WGD-8A光栅光谱仪上实现变温荧光特性测量
短句来源
     Both the fluorescence intensity and the peak location of anthraquinone chromophore are sensitively affected by the change in the bilayer physical state.
     变温荧光光谱观察双分子膜中蒽醌生色基的荧光光谱强度和峰位极敏感地受到双分子膜物理状态变化的影响。
短句来源
     The temperature dependence of emission intensity of the Eu 3+ ion in several silicate glasses was investigated from 77K to 670K, by the excitation of a non resonant 488nm laser. It was observed that the total emission intensity of the Eu 3+ ion in some glasses had a maximum at a certain temperature below 670K, while in the other glasses the intensity increased monotonically with temperature.
     研究了从 77K到 6 70K不同基质、不同掺杂浓度下硅酸盐玻璃中Eu3 + 离子在 4 88nm激光激发下的变温荧光发射特性。
短句来源
     We analyze the factors which affect 5D 0→ 7F 2 luminescence intensity under the excitation of the 488nm light, and establish formulas accordingly. By fitting the experiment data, we find the temperature quenching rate of nanocrystals is faster than that of the bulk.
     通过分析影响Y2 O3:Eu3+ 在 4 88nm激光激发下的5D0 →7F2 变温荧光发射强度的因素 ,建立起公式并对实验数据进行拟合 ,得到纳米晶的温度猝灭速率大于体材料的温度猝灭速率 .
短句来源
  相似匹配句对
     RESONANCE FLUORESCENCE
     共振荧光
短句来源
     Fluorescent filter
     荧光滤光片
短句来源
     Comparison of Reasonableness of the Fluorescence Quenching and Enhancement Equations at Different Temperatures
     变温荧光猝灭和加强理论公式合理性的比较
短句来源
     Measurement of fluorescent characteristics at varying temperature with WG-8A grating spectrometer
     在WGD-8A光栅光谱仪上实现变温荧光特性测量
短句来源
     The Method of Calculation for Heating/Cooling Load by Variable Indoor Temperature
     变温负荷计算法
短句来源
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  temperature-dependent fluorescence
Quasi-simultaneous excitation with 248?nm and 308?nm of 3-pentanone that is used as a fluorescence tracer doped to iso-octane, yields pairs of strongly temperature-dependent fluorescence images.
      
Temperature-dependent fluorescence anisotropy of the 1,6-diphenyl-1,3,5-hexatriene probe demonstrated stability of the vesicles.
      
The activation energy for the reversible part of the temperature-dependent fluorescence increase was 0.045?eV, which corresponds to the energy difference between the 680 and 697?nm absorption bands.
      
The temperature-dependent fluorescence studies of C++ clearly indicate the existence of two distinct emitting species having their own characteristic decay rates.
      


A single-chain ammonium amphiphile(ANQU) which contains the anthraquinone chromophore formed stable bilayer membranes in water.The absorption and fluorescence spectra show the aggregate structure.The absorption spectra of ANQU aqueous sample show a considerable red shift relative to that observed in organic media(ethanol).Large red shift is also observed in the gel state, in contrast to that in liquid-crystalline state.These results indicate that the molecular packing mode in bilayer is J-aggregate,which is...

A single-chain ammonium amphiphile(ANQU) which contains the anthraquinone chromophore formed stable bilayer membranes in water.The absorption and fluorescence spectra show the aggregate structure.The absorption spectra of ANQU aqueous sample show a considerable red shift relative to that observed in organic media(ethanol).Large red shift is also observed in the gel state, in contrast to that in liquid-crystalline state.These results indicate that the molecular packing mode in bilayer is J-aggregate,which is explained by the head-to-tail anthraquinone chromophore orientation. Both the fluorescence intensity and the peak location of anthraquinone chromophore are sensitively affected by the change in the bilayer physical state.

用荧光和紫外光谱研究了新合成的含蒽醌(2,6)生色基的单链双亲性分子(ANQU)在水溶液中形成的双分子膜聚集体结构。ANQU在稀水溶液中的吸收光谱比其在乙醇稀溶液中的谱峰有较大的红移;其凝胶态相对于液晶态的吸收谱亦有明显红移。结果表明,ANQU双分子膜中分子的堆积方式是J-聚集,蒽醌生色基以头对尾取向方式排列。变温荧光光谱观察双分子膜中蒽醌生色基的荧光光谱强度和峰位极敏感地受到双分子膜物理状态变化的影响。

The fluorescence properties of RE. L1. L2 (RE=Tb (Ⅲ),Gd(Ⅲ), L1= 3-methylindole-1-acetoacetyl,L2=TPPO, Phen,Dipy)complex system were characterized by fluorescence spectra,phosphorescence spectra, phosphorescence lifetime,temperature-dependent fluorescence spectra.The main factor that affects the fluorescence of the complex system was analysed.The energy transfer between the triplet of L1 and L2 as well as the luminescence mechanism of the complex system was discussed.

测定和分析了RE.L1.L2(RE=Tb(Ⅲ)、Gd(Ⅲ),L1=3M(3甲基吲哚-1-乙酰基丙酮),L2=TPPO、Phen、Dipy)三元配合物的荧光光谱、磷光光谱、磷光寿命及变温荧光光谱等.讨论了Tb(Ⅲ)与配体之间的能级匹配和L1与L2的三重态之间传能的问题,说明了影响这些三元配合物荧光效率的主要因素及其发光过程.

The temperature dependence of emission intensity of the Eu 3+ ion in several silicate glasses was investigated from 77K to 670K, by the excitation of a non resonant 488nm laser. It was observed that the total emission intensity of the Eu 3+ ion in some glasses had a maximum at a certain temperature below 670K, while in the other glasses the intensity increased monotonically with temperature. A unified theore tical model was given considering thermal activation, phonon assisted absorption...

The temperature dependence of emission intensity of the Eu 3+ ion in several silicate glasses was investigated from 77K to 670K, by the excitation of a non resonant 488nm laser. It was observed that the total emission intensity of the Eu 3+ ion in some glasses had a maximum at a certain temperature below 670K, while in the other glasses the intensity increased monotonically with temperature. A unified theore tical model was given considering thermal activation, phonon assisted absorption and nonradiative energy transfer processes. Based on the model, all of the experimental data were well fitted. The temperature quenching channels were discussed, while the temperature quenching rates were determined. As known, persistent spectral hole burning (PSHB) has potential application as the media of high density optical information storage. Recently, PSHB phenomenon at room temperature has been observed in Eu 3+ doped as well as Sm 2+ doped glasses. For this sake, Eu 3+ ion doped in glass hosts is attracting current interests. In this paper, we study on the temperature dependent characteristic of the emission of the Eu 3+ ion under the pump of a 488nm light. The understanding of temperature dependent luminescent process is helpful to search for new materials for optical storage at high temperature and phosphors with high quantum efficiency . In our study, the variation of the emission intensity of Eu 3+ can be mainly attributed to two factors, the thermally excited emission from 7F 2 to 5D 2 and the temperature quenching effect. The former tends to cause the emission intensity of Eu 3+ increase with temperature, while the later tends to cause the intensity decrease. The temperature quenching effect is comparable with the thermal excited emission of 7F 2 → 5D 2 when the glass is elevated to one certain temperature, thus a maximum of emission intensity occurs. In all the glasses, the phonon assisted transition rates from 7F 0 to 5D 1 and 5D 2 and from 7F 1 to 5D 1 and 5D 2 are much smaller than the resonant transition rate of 7F 2 → 5D 2 .

研究了从 77K到 6 70K不同基质、不同掺杂浓度下硅酸盐玻璃中Eu3 + 离子在 4 88nm激光激发下的变温荧光发射特性。发现有些样品荧光发射强度先随温度升高而增强而后又随温度升高而减弱 ;而有些样品的荧光发射强度在观察温度区域内随温度升高一直增强。本文用热激活、声子辅助吸收过程和无辐射能量传递过程造成的温度猝灭相互关系的机制解释了样品荧光发射强度随温度的变化关系 ,用同一公式拟合了这些样品的变温曲线。比较了不同激发通道的数量关系 ,计算了样品的温度猝灭值

 
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