查询词典 rhodamine

And it is known to alkylate DNA preferentially at guanine N7 position, causing intra-or inter-strand cross-linking of DNA and interfering with DNA replication and DNA-directed RNA synthesis.

我们采用Rhodamine B降解法得到了药物在抗坏血酸的协同下产生羟基自由基的信号，从而进一步证实了药物以氧化切割的方式断裂核酸。

Two: Synthesized a novel rhodamine derivative with a single amidogen, then analyzed and characterized the dye by 1H NMR and EI-MS.

二、以对硝基苯甲醛和八羟基久洛尼定为原料，合成了一种新型的罗丹明荧光染料，并通过核磁共振、质谱等手段对染料结构进行了表征。

In this paper, the study progress of rhodamine dye type in recent years and the reaction mechanism and the methods of aryl methyl oxidation to the fragrant aldehyde group were firstly introduced.

在本论文中，首先介绍了近年来罗丹明类染料的研究进展和芳甲基氧化生成芳醛基的反应机理、方法。

In part three, the characteristics of RBH and rhodamine B ethylenediamine were compared.

第三部分比较了RBH和罗丹明B-乙二胺(Rhodamine B ethylenediamine，RBE)的性质。

The molecular structural formula of the rhodamine 6G hydrazide salicylal azomethine is shown on the right, and the present invention discloses the synthesization method of the rhodamine 6G hydrazide salicylal azomethine and rhodamine 6G hydrazide salicylal azomethine solution used for the content determination of a small amount of cupric ions in water sample: 0 percent to 98.99 percent of ethanol, 99.99 percent to 1 percent of acetic acid / sodium acetate buffer solution with the pH value of 5 to 9, in which the total concentration of acetic acid is 1 to 100 millimoles per litre, 0.01 percent of N, N-dimethylformamide and 1ppm to 100ppm of rhodamine 6G hydrazide salicylal azomethine, all measured in mass percentage.

罗丹明6G酰肼水杨醛希弗碱，分子结构式如右，本发明公开了罗丹明6G酰肼水杨醛希弗碱的合成方法及其用于水样中微量铜离子含量测定的溶液：0～98.99％乙醇，99.99～1％pH值5～9的醋酸/醋酸钠缓冲溶液，该缓冲溶液中醋酸总浓度为每升1～100毫摩尔，0.01％N，N-二甲基甲酰胺和1～100ppm罗丹明6G酰肼水杨醛希弗碱，均为质量百分含量。

Pyronine B adheres to on the surface of CdS and prevents CdS aggregating, which leads to the decrease of fluorescence quantum yield of CdS. Fluorescence resonance energy transfer happens from CdS to Rhodamine B, Butyl rhodamine B and Rhodamine 6G, respectively. There is a higher FRET efficiency between CdS and Neutral red with the value being 0.282. Moreover, coupling reaction between -NH_2 of Neutral red and -COOH of CdS -TGA leads to red shift of CdS fluorescence spectrum. The reaction also occurs between Safranine T and CdS. At the same time, the Fluorescence of ST is quenched by forming ST -CdS ground state complex. Chapter 6, CdS QDs modified by chitosan and polyethyleneimine can be quenched by Cu~(2+). According to the experimental result, we develop the novel sensor for Cu~(2+).

研究结果，吡啰红与CdS之间作用形式是染料聚集在CdS的表面使得CdS不易聚集，但同时也降低了CdS的发光的量子效率；罗丹明B、罗丹明6G、丁基罗丹明B均与CdS之间存在能量转移，位阻效应使得能量转移效率最高的BRhB的相对荧光强度增大最小；中性红与CdS的能量转移效率更高，同时推测可能使CdS-TGA上的-COOH与部分NR的-NH_2发生偶联导致粒子变大而发生荧光光谱的红移；番红花红与CdS是相互荧光猝灭，可能是ST的-NH_2与CdS-TGA上的-COOH发生偶联使得纳米粒子变大以及二者形成基态复合物的共同作用的影响。

A series of alkyl rhodamine B esters were designed and synthesized from rhodamine B.

以罗丹明B为原料设计合成了一系列的烷基罗丹明B酯衍生物。

The energy transfer between Rhodamine 6G and Rhodamine B dyes in aqueous solution of Na dodecyl sulfate was studied.

本工作对罗丹明6G(1)与罗丹明-B(2)两种染料在十二烷基硫酸钠溶液中的能量转移进行了研究。

Dichlo-5- carboxylic acid Rhodamine is a kind of bright flurescent using xanthene as scaffold, whose aryl-H was substituted with a variety of groups. Compared with any other rhodamine, they can increase or decrese emissive absorbance in most limitation.

4，7，-二氯-5(和6)-羧酸罗丹明荧光染料是一种带有羧基官能团的荧光染料，作为一种特殊的抗体染色剂，在生物，医药方面具有广泛的应用，能标记DNA和蛋白质等大分子，这些性能被广泛应用于DNA分离和定序的研究中。

Control group was also set up.Then the AO/EB fluorescence double-dye technique,immunocytochemistry staining,Fluo-3 staining and Rhodamine 123 uptake assay approaches were adopted to observe the apoptotic rate,expression levels of Bcl-2 and Bax proteins,concentration of cytoplasmic free Ca2+ and mitochondrial transmembrane potential of NCI-H460 cells.

采用AO/EB荧光双染、免疫细胞化学染色、Rhodamine 123摄取法及Fluo-3/AM染色分别观察NCI-H460细胞的凋亡、Bcl-2及Bax蛋白的表达量、线粒体跨膜电位及细胞内游离钙离子浓度。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。