钐与1-苯基-2,3-二甲基-4-酰代吡唑酮-5的三元配合物的合成与表征

自从Ｊｏｎｓｅｎ［１］使４－酰代吡唑酮－５化合物的合成标准化以来，人们相继进行了多种４－酰代吡唑酮－５萃取金属离子的研究［２，３］、常价和变价固态化合物的研究［３，４］、以及涉及４ｆ电子能层的超灵敏跃迁的研究［５］，表明４－酰代吡唑酮－５是一优良的β...

介电常数法探讨微乳液对显色反应的增敏作用

通过紫外分光光度法测定显色剂水杨基荧光酮（ＳＡＦ）在微乳液及胶束介质中的平均有效介电常数Ｄ和分配系数ＫＤ，探讨了显色剂在介质中所处的微环境和增溶量．试验结果表明，显色剂ＳＡＦ在微乳液中较在相应的胶束中有较低的平均有效介电常数和较高的分配系数。

2,9-二甲基-4,7-二苯基-1,10-菲罗啉分子结构及光谱的理论计算

用ＰＭ３系列方法对２，９－二甲基－４，７－二苯基－１，１０－菲罗啉进行了几何构型全优化，得到Ｃ２ｖ对称性的稳定构型，以此构型为基础，计算了该分子的紫外光谱和红外光谱。

Second-order Nonlinear Optical Properties of a Series of Benzothiazole Derivatives

The second-order nonlinear optical (NLO) properties of a series of benzothiazole derivatives were studied by use of the ZINDO-SOS method. These chromophores are formed by a donor-π-bridge-acceptor system, based on a nitro group connected with benzothiazole as the acceptor and a hydroxyl-functional amino group as the donor. For the purpose of comparison, we also designed molecules in which nitrobenzene is an acceptor. The calculation results indicate that benzothiazole derivatives exhibit larger second-order polarizabilities than nitrobenzene derivatives. In order to clarify the origin of the NLO response of these chromophores, their electron properties were investigated as well. The benzothiazole derivatives are good candidates for application in electro-optical device due to their high optical nonlinearities, good thermal and photonic stability.