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The Problems of Spectrum, Quantum Yield of Phosphorescence, Photosensitization and Photostabilization of Polymeric Acetophenone and Its Derivatives

高分子苯乙酮及其衍生物的光谱、磷光量子产率及光敏化光稳定问题的研究

A new way of synthesis 2-methoxy-4'-trifluoromethyl acetophenone by the method of crossed ester condensation was investigated in the overall yield of higher than 85%.

本文提出了一种新的方法——交叉酯缩合法合成2-甲氧基-4'-三氟甲基苯乙酮。

Under optimal conditions, oxidation of ethylbenzene into acetophenone under 1 atm O2 and 1 mol% NHPI reach to 64% yield.

在最佳的催化状态下，苯乙烷能在1 atm的氧气、1 mol% NHPI与轴向配位基为吡啶的紫质修饰二氧化钛共催化下，氧化成苯乙酮，并得到64%的产率。

In this work, the problems of spectrum, quantum yield and lifetime of Phosphoresconce, photosensitization and photostabilization of polymeric acetophenone and its derivatives have been studied.

本工作合成和研究了高分子苯乙酮及其衍生物的光谱、磷光量子产率、磷光寿命以及光敏化、光稳定等问题。

The results indicated that acetophenone can be reduced by NaBH4/BF3Et2O with high chemical yield and low to moderate enantioselectivity when amino alcohols were used as catalysts.

结果表明：这些氨基醇催化NaBH4/BF3Et2O还原苯乙酮可以获得很高的化学产率和低到中等的对映选择性。

The effect of different calcium chloride concentration, reaction time and neutralized acid on yield of tagatose was investigated by single factor tests. Results showed that the condition, such as calcium chloride (0.01～0.03 mol/L), reaction time(20～40 min), acetum, carbon dioxide, phosphate acid to synthesize tagatose was suitable.

通过单因素实验，确定了以D-半乳糖为原料进行化学法合成D-塔格糖的工艺条件为：CaCl2的添加量在0.01～0.03 mol/L，反应时间在20～40 min，并用醋酸、CO2、磷酸中和时D-塔格糖产率较高。

A series of platinum terpyridyl acetylide complexes were designed and synthesized, which exhibit 〓MLCT emission with high quantum yield and long lifetime in the fluid solution at room temperature.

本论文设计、合成了一系列炔基为辅助配体的多吡啶Pt络合物，系统地研究了它们的光物理性质，探讨了其在超分子化学中的应用，取得了一系列有意义的研究结果：一。

The experiment indicates: on condition that the mole ratio is 1.1:1, temperature is 90~98℃, pH is 1~2, acid adding speed is 1 drop/(2~3) second, the yield and quality of the products can get increased when reaction liquid disposed with ultrasound wave.

实验表明：在硅酸钠与钨酸钠的物质的量比为1.1：1，控温90~98℃，pH值1~2，加酸速率1滴／(2~3)s的优化条件下，用超声波处理反应液可以增加产品的产量和质量。

The effect of ratio of hydroxyl acid, amount of catalyst and reaction time to the yield of sioamyl propionate were investigated.

探讨了醇酸物质的量比、催化剂用量、反应时间对丙酸异戊酯产品收率的影响。

The impact of reaction conditions, such as acid/oil ratio, reaction temperature and reaction time on the product yield was studied.

在磺化反应过程中主要考察了反应温度、反应时间和酸油体积比对石油磺酸收率的影响。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。