and their bar-shaped singlecrystals with a large size and a smooth surface have been obtained via the solvent-evaporation method. These crystals exhibit bright emission with fluorescence quantum yields higher than 0.2. They display the waveguide property, and low optical loss coefficients for waveguide have been determined for the crystal of one compound. In addition, the crystal can cause linear polarization
摘要通过一步反应合成了一系列结构简单的2,5-二氨基对苯二甲酸酯,通过溶剂蒸发法得到了大尺寸且表面光滑的棒状单晶。这些晶体显示出明亮的发射,荧光量子产率高于0.2。它们显示出波导特性,并且已针对一种化合物的晶体确定了波导的低光损耗系数。另外,该晶体可以引起从其发出的光的线性偏振,其偏振对比度为0.70。最重要的是,这些晶体可以实现放大的自发发射(ASE),包括红色ASE,其能量阈值为72–198 kW / cm 2,并且增益系数高,
The present invention relates to advantageous processes for the manufacture of organic pigments and their precursors. The invention particularly relates to reactions carried out in an “All In One Reactor”® (Draiswerke GmbH, Germany), a kneader like the TurbuKneader® of the same company, a paddle dryer like the Turbudry® of the same company or a related system and thereby submitting the reaction mixtures to enhanced driving power as expressed by a Froude number >1, the reaction mixture being caused to react in high concentrations at elevated temperature.
The present invention relates to advantageous processes for the manufacture of organic pigments and their precursors. The invention particularly relates to reactions carried out in an “All In One Reactor”® (Draiswerke GmbH, Germany), a kneader like the TurbuKneader® of the same company, a paddle dryer like the Turbudry® of the same company or a related system and thereby submitting the reaction mixtures to enhanced driving power as expressed by a Froude number >1, the reaction mixture being caused to react in high concentrations at elevated temperature.