Relationship Between SHG EFFect and Crystal Structure in Complexes of Sub-Group Metal Halide and POM

已发现某些金属有机配合物是一类有前景的非线性光学材料，为了系统地探索二次谐波发生（SHg）效应大、综合性能好的新型金属有机配合物非线性光学晶体材料，则有必要探讨它们的性能与结构之间的关系。考虑到某些具有较大二阶极化率的有机分子可能与副族金属卤化物形成配合物，于是对这些配合物的二次谐波效应与晶体结构的关系进行了较系统的研究，发现它们实测的SHg强度的大小与晶体的配位键中离子键和共价键成分的大小相一致。Some organometallic complexes which are a type of potential nonlinear optical materials have been discovered.In order to make a systematic exploration For new organometallic complexes exhibiting large second harmonic generation(SHG)eFFect and good comprehensive properties ,it is necessary to study the relationship between the property and the structure.Considering the possibility of Forming complexes between some organic molecular crystals exhibiting good SHG eFFect and metallic ions of the sub-group,the relationship between the second-harmonic eFFect and the crystal struture of these complexes was investigated systematically.The experimentation discovered that the regularity of their SHG intensity agree with the regularity of the crystal structure.国家自然科学基金、福建省自然科学基

Purification of Naringin by simulated moving bed chromatography

通过四区模拟移动床色谱制备纯化柚皮苷。采用高效液相色谱测试单柱的相关参数,通过三角形方法,确定线性条件下的完全分离操作范围。在该范围中选取操作条件进行柚皮苷的制备纯化。实验结果表明,当选取的一至四区流速分别为2Ml/MIn,1.35Ml/MIn,1.69Ml/MIn,0.69Ml/MIn,切换时间为35.5MIn时,通过面积归一法计算出,该系统制备的柚皮苷纯度可从粗品的82%提升到98%左右,主要杂质峰基本消失,满足柚皮苷的高纯度制备要求。柚皮苷的回收率为97%,产率为0.33Mg/MIn,溶剂耗量为4.85Ml/Mg。The naringing was purified by four-zone simulated moving bed.The relative parameters were determined by HPLC and the complete separation region was found under linear condition with triangle theory.In this region,the oparation conditions were set.As the result,according to the area normalization method,the naringin purity increased to appoximate 98% from the 82% in crude sample by this system when flow rates of the four zone were 2mL/min,1.35 mL/min,1.69 mL/min,0.69 mL/min respectively and switching time was 35.5min.The main impurity was disappeared and this process could reach the separation requirment.The naringin recovery was 97%,productivity was 0.33mg/mL and desorbent consumption was 4.85mL/mg