查询词典 hypsochromic

The conjugational and delocalizational energy levels were calculated by Gaussian 98, and its hypsochromic shift mechanism was also discussed.

用Gaussian 98计算了共轭p键和离域键能，由此讨论了吸收波长发生蓝移的机理。

Anthocyanidin extract in methanol showed 3 absorption peaks, at 270, 340 and 520 nm, in the UV-vis spectrum, with bathochromic and hypsochromic shift with methanol+AlCl3 and methanol+AlCl3+HCl, respectively; the ratio of the absorbance at 440 nm to that at 520 nm was 0.29. No fluorescence occurred under UV irradiance, and 5 absorption peaks occurred at 270 nm after HPLC. Five molecular ion peaks occurred on MS: 595, 381, 611, 587 and 571, respectively, and monosaccharides in the extract were identified as rhamuose and glucose on HPLC.

一品红花色素的甲醇溶液分别在270、340 和520 nm 处有 3 个吸收峰；在 440 nm 吸光度与可见光最大吸收波长 520 nm 吸光度的比值为0.29；花色素的甲醇溶液中加入AlCl3后发生红移，再加入HCl后发生蓝移；色素溶液在紫外光下无荧光；色素样品经液相色谱分离后在 270 nm检测有 5 个比较明显的吸收峰；质谱中得到 595、611、381、571 和 589 等对应的分子离子峰；花色素酸解液高效液相色谱图谱和鼠李糖、葡萄糖的出峰时间一致。

For low molar ratios of Al/Zr, a hypsochromic shift of the initial catalyst absorption band, corresponding to the monomethylation of the catalyst, was observed. Further addition of AlEt2Cl was accompanied by a continuous bathochromic shift of the maximal wavelength corresponding to the formation of more dissociated ionic active species. Then, there would be a coordination of monomer to the ionic active species.

结果表明，无论是AlEt_2Cl还是MAO，少量的助催化剂首先使催化剂发生单烷基化反应，主催化剂金属中心的最大吸收峰波长发生蓝移，而当助催化剂量进一步增加时，金属中心的最大吸收峰波长红移，单烷基取代的催化剂被大量的助催化剂夺去电子成为缺电子的阳离子活性中心，以便烯烃单体的配位插入。

The results have indicated that the introduction of electron-donating methoxy or electron-withdrawing cyano-group at the 7-position of 3-phenylcoumarins caused a bathochromic shift for both absorption and fluorescence spectra. The phenyl group at the 4-position derivative has a hypsochromic shift for both absorption and fluorescence spectra.

结果发现，在3-苯基香豆素的7-位引入给电子基团甲氧基或吸电子基团氰基均使它们的吸收光谱和荧光光谱产生红移，4-苯基香豆素的衍生物的吸收光谱和荧光光谱均产生蓝移。3-苯基香豆素衍生物与4-苯基香豆素的衍生物的基态和激发态的电子转移方向相反。

Results: This method eliminated the interference of the imfluence of ethyl hydroxybenzoate, such as hypsochromic shift of wave and a bit higher of the results. The average recovery was 99.31%, RSD=0.68%(n=6). Conclusions: This method was simple, fast and accurate, and was suitable for improving the original criteria.

结果：排除了羟苯乙酯对甲硝唑造成的波长短移，使结果偏高等干扰，平均回收率为99.31%，RSD=0.68%(n=6)结论：本测定方法简便，快速，准确，可用于改进原标准的含量测定方法。

The experimental results showed that when AcO-or other anion s were added to a solution consisting of 1,5-(di-benzaldehyde) dithiocarbohydrazone and Hg2+(at a ratio of 1∶2),a hypsochromic shift took place on the maximum ultraviolet absorption peak of the ligand.

设计合成了配体1，5-二双缩二氨基硫脲及其金属配合物，探讨了不同金属阳离子对1，5-二双缩二氨基硫脲紫外吸收光谱的影响，并将标题化合物应用于阴离子识别。

The UV-vis and redox data indcated that the molecular plane was destroied by meso ethyl.λ〓 hypsochromic 52 nm and W〓 increase. Redox potentials increase, too.

染料的UV-vis吸收光谱和氧化还原电位结果表明中位乙基的引入破坏了染料分子的平面性，使得染料的λ〓蓝移52nm，半峰宽增大；氧化、还原电位均升高。

In the photoproducts with predominant quinoidal structure, abathochromic shift of absorption spectra is observed with increasing solvent polarity; inthose with predominant zwitterionic structure, a hypsochromic shift does so.

然而，所有这些取代基对光致变色反应的影响要较2〓位取代基的效应小得多。四。溶剂极性对光开环产物的吸收光谱和寿命的影响也被讨论了。这种影响效应的情况可概括如下： 1。

Electron donating substituent CH〓, OCH〓 and 4, 5-benzo make λ〓 red shift, electron with -drawing substituent F, Cl and CF〓 make λ〓 hypsochromic shift; b The W〓 is bigger than relative symmetrical carbocyanines, and the ratio of 0-1＇ and 0-0＇ transition intensity increase with the increase of σ〓; c The absorption and the fluorescence spectra are mirror image, and the λ〓 have a good linear relationship; d The Stokes shift △λ〓 and the Hammett σ〓 constant have a good linear relationship.

研究了染料的光物理性质，①苯环上取代基影响染料的λ〓和摩尔消光系数，相对于H，给电子取代基CH〓、OCH〓、4，5-benzo使λ〓红移，摩尔消光系数减小，吸电子取代基F、Cl、CF〓使λ〓蓝移，摩尔消光系数减小；②化合物吸收峰的半峰宽较相应的对称染料的大，且振动肩部与最大吸收峰的强度比随σ〓增大而增大；③吸收光谱与荧光光谱呈镜像关系，且λ〓与λ〓呈良好的线性关系；④化合物的Stokes位移△λ〓与取代基的Hammett σ〓常数呈线性关系。

From the UV-vis absorption spectra data, we can obtained: a Intruduce a 3-sulfopropyl into thiacyanine makes λ〓 red shift 1nm; b For the anionic thiacyanines, the substituent at the 5-position of the benzene ring has influence on λ〓· Acroding to the sequence F, Cl, CH〓, OCH〓, 4, 5-benzo,λ〓 red shift. Strong electron-withdrawing group CF〓 makes λ〓 hypsochromic shift 1nm.

选取三个系列的15个染料在乳剂中作增感实验，并用摄谱仪测定了乳剂的感色峰，结果表明：吸电子取代基不利于增感，给电子取代基有利于增感；噻菁染料的加入扩大了乳剂的感色范围，弥补了卤化银乳剂在465～505nm范围内感光度的不足。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。